./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0232-1.i --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for memory safety (deref-memtrack)
Using default analysis
Version 6497de01
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0232-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC --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 1228d922512a0e9364273220ccc1e5afc3bfb7c0e22f10439a1ba902492e71b2
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-6497de0
[2024-11-23 23:45:24,490 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-11-23 23:45:24,576 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf
[2024-11-23 23:45:24,581 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-11-23 23:45:24,581 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-23 23:45:24,609 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-23 23:45:24,610 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-23 23:45:24,610 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-23 23:45:24,610 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-23 23:45:24,610 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-11-23 23:45:24,611 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-23 23:45:24,611 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-23 23:45:24,611 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-23 23:45:24,611 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-11-23 23:45:24,611 INFO L153 SettingsManager]: * Use SBE=true
[2024-11-23 23:45:24,611 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-23 23:45:24,611 INFO L153 SettingsManager]: * sizeof long=4
[2024-11-23 23:45:24,611 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-11-23 23:45:24,612 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-11-23 23:45:24,612 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-11-23 23:45:24,612 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true
[2024-11-23 23:45:24,612 INFO L153 SettingsManager]: * Bitprecise bitfields=true
[2024-11-23 23:45:24,612 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true
[2024-11-23 23:45:24,612 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-23 23:45:24,612 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2024-11-23 23:45:24,612 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false
[2024-11-23 23:45:24,612 INFO L153 SettingsManager]: * sizeof long double=12
[2024-11-23 23:45:24,612 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-11-23 23:45:24,612 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-11-23 23:45:24,613 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-11-23 23:45:24,613 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-23 23:45:24,613 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-23 23:45:24,613 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-23 23:45:24,613 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-23 23:45:24,613 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-23 23:45:24,613 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-23 23:45:24,613 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-23 23:45:24,613 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-23 23:45:24,613 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-23 23:45:24,614 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-23 23:45:24,614 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-11-23 23:45:24,614 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-11-23 23:45:24,614 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-23 23:45:24,614 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-23 23:45:24,614 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-23 23:45:24,614 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-11-23 23:45:24,614 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-23 23:45:24,614 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC
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_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC
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 -> 1228d922512a0e9364273220ccc1e5afc3bfb7c0e22f10439a1ba902492e71b2
[2024-11-23 23:45:24,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-23 23:45:24,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-23 23:45:24,944 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-23 23:45:24,946 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-11-23 23:45:24,947 INFO L274 PluginConnector]: CDTParser initialized
[2024-11-23 23:45:24,949 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/memsafety/test-0232-1.i
[2024-11-23 23:45:27,866 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/data/156700d84/2995c976b3ed47a9bfccbaf2c4ec64e7/FLAG8921c37b5
[2024-11-23 23:45:28,190 INFO L384 CDTParser]: Found 1 translation units.
[2024-11-23 23:45:28,191 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/sv-benchmarks/c/memsafety/test-0232-1.i
[2024-11-23 23:45:28,215 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/data/156700d84/2995c976b3ed47a9bfccbaf2c4ec64e7/FLAG8921c37b5
[2024-11-23 23:45:28,239 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/data/156700d84/2995c976b3ed47a9bfccbaf2c4ec64e7
[2024-11-23 23:45:28,241 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-23 23:45:28,243 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-23 23:45:28,245 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-23 23:45:28,245 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-23 23:45:28,250 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-23 23:45:28,250 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:45:28" (1/1) ...
[2024-11-23 23:45:28,251 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46dab861 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:28, skipping insertion in model container
[2024-11-23 23:45:28,253 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:45:28" (1/1) ...
[2024-11-23 23:45:28,288 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-11-23 23:45:28,649 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-23 23:45:28,659 INFO L200 MainTranslator]: Completed pre-run
[2024-11-23 23:45:28,720 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-23 23:45:28,753 INFO L204 MainTranslator]: Completed translation
[2024-11-23 23:45:28,754 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:28 WrapperNode
[2024-11-23 23:45:28,754 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-23 23:45:28,755 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-23 23:45:28,755 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-23 23:45:28,755 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-23 23:45:28,762 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:28" (1/1) ...
[2024-11-23 23:45:28,773 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:28" (1/1) ...
[2024-11-23 23:45:28,791 INFO L138 Inliner]: procedures = 126, calls = 32, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 81
[2024-11-23 23:45:28,792 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-23 23:45:28,792 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-23 23:45:28,792 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-23 23:45:28,793 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-11-23 23:45:28,801 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:28" (1/1) ...
[2024-11-23 23:45:28,802 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:28" (1/1) ...
[2024-11-23 23:45:28,804 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:28" (1/1) ...
[2024-11-23 23:45:28,820 INFO L175 MemorySlicer]: Split 20 memory accesses to 3 slices as follows [2, 7, 11]. 55 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 0, 1]. The 5 writes are split as follows [0, 2, 3].
[2024-11-23 23:45:28,820 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:28" (1/1) ...
[2024-11-23 23:45:28,821 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:28" (1/1) ...
[2024-11-23 23:45:28,829 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:28" (1/1) ...
[2024-11-23 23:45:28,830 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:28" (1/1) ...
[2024-11-23 23:45:28,833 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:28" (1/1) ...
[2024-11-23 23:45:28,834 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:28" (1/1) ...
[2024-11-23 23:45:28,835 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:28" (1/1) ...
[2024-11-23 23:45:28,837 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-23 23:45:28,841 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-23 23:45:28,841 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-11-23 23:45:28,841 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-11-23 23:45:28,842 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:28" (1/1) ...
[2024-11-23 23:45:28,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-23 23:45:28,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 23:45:28,876 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-23 23:45:28,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-23 23:45:28,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2024-11-23 23:45:28,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-23 23:45:28,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2024-11-23 23:45:28,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0
[2024-11-23 23:45:28,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1
[2024-11-23 23:45:28,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2
[2024-11-23 23:45:28,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0
[2024-11-23 23:45:28,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1
[2024-11-23 23:45:28,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2
[2024-11-23 23:45:28,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2024-11-23 23:45:28,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0
[2024-11-23 23:45:28,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1
[2024-11-23 23:45:28,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2
[2024-11-23 23:45:28,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-23 23:45:28,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1
[2024-11-23 23:45:28,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2
[2024-11-23 23:45:28,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-23 23:45:28,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-23 23:45:29,065 INFO L234 CfgBuilder]: Building ICFG
[2024-11-23 23:45:29,067 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-23 23:45:29,455 INFO L? ?]: Removed 91 outVars from TransFormulas that were not future-live.
[2024-11-23 23:45:29,455 INFO L283 CfgBuilder]: Performing block encoding
[2024-11-23 23:45:29,472 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-23 23:45:29,472 INFO L312 CfgBuilder]: Removed 2 assume(true) statements.
[2024-11-23 23:45:29,473 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:45:29 BoogieIcfgContainer
[2024-11-23 23:45:29,473 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-23 23:45:29,475 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-23 23:45:29,476 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-11-23 23:45:29,481 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-11-23 23:45:29,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:45:28" (1/3) ...
[2024-11-23 23:45:29,482 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23670c69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:45:29, skipping insertion in model container
[2024-11-23 23:45:29,482 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:28" (2/3) ...
[2024-11-23 23:45:29,483 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23670c69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:45:29, skipping insertion in model container
[2024-11-23 23:45:29,483 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:45:29" (3/3) ...
[2024-11-23 23:45:29,485 INFO L128 eAbstractionObserver]: Analyzing ICFG test-0232-1.i
[2024-11-23 23:45:29,501 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-23 23:45:29,503 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG test-0232-1.i that has 1 procedures, 83 locations, 1 initial locations, 2 loop locations, and 41 error locations.
[2024-11-23 23:45:29,556 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-23 23:45:29,573 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;@43068300, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-23 23:45:29,574 INFO L334 AbstractCegarLoop]: Starting to check reachability of 41 error locations.
[2024-11-23 23:45:29,579 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 82 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)
[2024-11-23 23:45:29,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5
[2024-11-23 23:45:29,585 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:45:29,586 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1]
[2024-11-23 23:45:29,586 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] ===
[2024-11-23 23:45:29,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:45:29,593 INFO L85 PathProgramCache]: Analyzing trace with hash 925637, now seen corresponding path program 1 times
[2024-11-23 23:45:29,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:45:29,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741088614]
[2024-11-23 23:45:29,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:45:29,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:45:29,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:45:29,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:45:29,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:45:29,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741088614]
[2024-11-23 23:45:29,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741088614] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:45:29,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:45:29,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-23 23:45:29,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101133481]
[2024-11-23 23:45:29,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:45:29,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-23 23:45:29,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:45:30,007 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-23 23:45:30,009 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-23 23:45:30,012 INFO L87 Difference]: Start difference. First operand has 83 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 82 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) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:30,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:45:30,264 INFO L93 Difference]: Finished difference Result 75 states and 78 transitions.
[2024-11-23 23:45:30,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-23 23:45:30,267 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4
[2024-11-23 23:45:30,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:45:30,274 INFO L225 Difference]: With dead ends: 75
[2024-11-23 23:45:30,275 INFO L226 Difference]: Without dead ends: 73
[2024-11-23 23:45:30,277 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2024-11-23 23:45:30,280 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 76 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-23 23:45:30,281 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 65 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-23 23:45:30,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states.
[2024-11-23 23:45:30,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73.
[2024-11-23 23:45:30,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 40 states have (on average 1.9) internal successors, (76), 72 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:30,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions.
[2024-11-23 23:45:30,319 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 4
[2024-11-23 23:45:30,319 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:45:30,320 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions.
[2024-11-23 23:45:30,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:30,320 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions.
[2024-11-23 23:45:30,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5
[2024-11-23 23:45:30,320 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:45:30,320 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1]
[2024-11-23 23:45:30,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-23 23:45:30,323 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] ===
[2024-11-23 23:45:30,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:45:30,324 INFO L85 PathProgramCache]: Analyzing trace with hash 925638, now seen corresponding path program 1 times
[2024-11-23 23:45:30,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:45:30,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077196854]
[2024-11-23 23:45:30,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:45:30,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:45:30,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:45:30,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:45:30,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:45:30,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077196854]
[2024-11-23 23:45:30,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077196854] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:45:30,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:45:30,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-23 23:45:30,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133887360]
[2024-11-23 23:45:30,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:45:30,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-23 23:45:30,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:45:30,584 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-23 23:45:30,584 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-23 23:45:30,584 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:30,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:45:30,795 INFO L93 Difference]: Finished difference Result 83 states and 87 transitions.
[2024-11-23 23:45:30,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-23 23:45:30,795 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4
[2024-11-23 23:45:30,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:45:30,796 INFO L225 Difference]: With dead ends: 83
[2024-11-23 23:45:30,796 INFO L226 Difference]: Without dead ends: 83
[2024-11-23 23:45:30,796 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2024-11-23 23:45:30,797 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 72 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-23 23:45:30,798 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 65 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-23 23:45:30,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states.
[2024-11-23 23:45:30,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 74.
[2024-11-23 23:45:30,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 46 states have (on average 1.7391304347826086) 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)
[2024-11-23 23:45:30,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions.
[2024-11-23 23:45:30,808 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 4
[2024-11-23 23:45:30,808 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:45:30,808 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 80 transitions.
[2024-11-23 23:45:30,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:30,808 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions.
[2024-11-23 23:45:30,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6
[2024-11-23 23:45:30,808 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:45:30,808 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1]
[2024-11-23 23:45:30,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-11-23 23:45:30,811 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] ===
[2024-11-23 23:45:30,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:45:30,816 INFO L85 PathProgramCache]: Analyzing trace with hash 28694727, now seen corresponding path program 1 times
[2024-11-23 23:45:30,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:45:30,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321225258]
[2024-11-23 23:45:30,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:45:30,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:45:30,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:45:30,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:45:30,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:45:30,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321225258]
[2024-11-23 23:45:30,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321225258] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:45:30,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:45:30,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-23 23:45:30,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812517069]
[2024-11-23 23:45:30,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:45:30,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-23 23:45:30,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:45:30,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-23 23:45:30,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-23 23:45:30,871 INFO L87 Difference]: Start difference. First operand 74 states and 80 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:30,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:45:30,945 INFO L93 Difference]: Finished difference Result 70 states and 76 transitions.
[2024-11-23 23:45:30,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-23 23:45:30,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 5
[2024-11-23 23:45:30,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:45:30,946 INFO L225 Difference]: With dead ends: 70
[2024-11-23 23:45:30,946 INFO L226 Difference]: Without dead ends: 70
[2024-11-23 23:45:30,947 INFO L434 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
[2024-11-23 23:45:30,948 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 11 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-23 23:45:30,948 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 79 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-23 23:45:30,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states.
[2024-11-23 23:45:30,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70.
[2024-11-23 23:45:30,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 46 states have (on average 1.6521739130434783) internal successors, (76), 69 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:30,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions.
[2024-11-23 23:45:30,953 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 5
[2024-11-23 23:45:30,953 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:45:30,953 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions.
[2024-11-23 23:45:30,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:30,953 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions.
[2024-11-23 23:45:30,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6
[2024-11-23 23:45:30,954 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:45:30,954 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1]
[2024-11-23 23:45:30,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-11-23 23:45:30,954 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] ===
[2024-11-23 23:45:30,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:45:30,955 INFO L85 PathProgramCache]: Analyzing trace with hash 28694728, now seen corresponding path program 1 times
[2024-11-23 23:45:30,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:45:30,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166316777]
[2024-11-23 23:45:30,955 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:45:30,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:45:30,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:45:31,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:45:31,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:45:31,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166316777]
[2024-11-23 23:45:31,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166316777] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:45:31,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:45:31,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-23 23:45:31,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120044415]
[2024-11-23 23:45:31,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:45:31,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-23 23:45:31,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:45:31,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-23 23:45:31,074 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-23 23:45:31,074 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:31,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:45:31,155 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions.
[2024-11-23 23:45:31,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-23 23:45:31,156 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 5
[2024-11-23 23:45:31,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:45:31,156 INFO L225 Difference]: With dead ends: 66
[2024-11-23 23:45:31,156 INFO L226 Difference]: Without dead ends: 66
[2024-11-23 23:45:31,157 INFO L434 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
[2024-11-23 23:45:31,157 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 11 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-23 23:45:31,158 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 82 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-23 23:45:31,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states.
[2024-11-23 23:45:31,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66.
[2024-11-23 23:45:31,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 46 states have (on average 1.565217391304348) internal successors, (72), 65 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)
[2024-11-23 23:45:31,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions.
[2024-11-23 23:45:31,165 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 5
[2024-11-23 23:45:31,168 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:45:31,168 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions.
[2024-11-23 23:45:31,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:31,169 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions.
[2024-11-23 23:45:31,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2024-11-23 23:45:31,170 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:45:31,170 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:45:31,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2024-11-23 23:45:31,170 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] ===
[2024-11-23 23:45:31,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:45:31,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1328641136, now seen corresponding path program 1 times
[2024-11-23 23:45:31,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:45:31,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727236594]
[2024-11-23 23:45:31,172 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:45:31,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:45:31,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:45:31,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:45:31,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:45:31,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727236594]
[2024-11-23 23:45:31,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727236594] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:45:31,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:45:31,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2024-11-23 23:45:31,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562551402]
[2024-11-23 23:45:31,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:45:31,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-23 23:45:31,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:45:31,573 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-23 23:45:31,573 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-23 23:45:31,573 INFO L87 Difference]: Start difference. First operand 66 states and 72 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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)
[2024-11-23 23:45:31,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:45:31,820 INFO L93 Difference]: Finished difference Result 75 states and 81 transitions.
[2024-11-23 23:45:31,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-23 23:45:31,821 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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
[2024-11-23 23:45:31,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:45:31,821 INFO L225 Difference]: With dead ends: 75
[2024-11-23 23:45:31,821 INFO L226 Difference]: Without dead ends: 75
[2024-11-23 23:45:31,822 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110
[2024-11-23 23:45:31,823 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 18 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-23 23:45:31,823 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 308 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-23 23:45:31,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states.
[2024-11-23 23:45:31,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72.
[2024-11-23 23:45:31,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 52 states have (on average 1.5) internal successors, (78), 71 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:31,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 78 transitions.
[2024-11-23 23:45:31,833 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 78 transitions. Word has length 10
[2024-11-23 23:45:31,833 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:45:31,833 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 78 transitions.
[2024-11-23 23:45:31,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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)
[2024-11-23 23:45:31,834 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 78 transitions.
[2024-11-23 23:45:31,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2024-11-23 23:45:31,834 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:45:31,834 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:45:31,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2024-11-23 23:45:31,834 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] ===
[2024-11-23 23:45:31,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:45:31,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1870974680, now seen corresponding path program 1 times
[2024-11-23 23:45:31,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:45:31,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879744465]
[2024-11-23 23:45:31,835 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:45:31,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:45:31,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:45:32,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:45:32,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:45:32,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879744465]
[2024-11-23 23:45:32,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879744465] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:45:32,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:45:32,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-23 23:45:32,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565768174]
[2024-11-23 23:45:32,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:45:32,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-23 23:45:32,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:45:32,060 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-23 23:45:32,062 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2024-11-23 23:45:32,062 INFO L87 Difference]: Start difference. First operand 72 states and 78 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)
[2024-11-23 23:45:32,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:45:32,250 INFO L93 Difference]: Finished difference Result 83 states and 87 transitions.
[2024-11-23 23:45:32,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-23 23:45:32,251 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
[2024-11-23 23:45:32,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:45:32,252 INFO L225 Difference]: With dead ends: 83
[2024-11-23 23:45:32,252 INFO L226 Difference]: Without dead ends: 83
[2024-11-23 23:45:32,252 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2024-11-23 23:45:32,253 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 48 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-23 23:45:32,253 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 123 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-23 23:45:32,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states.
[2024-11-23 23:45:32,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 71.
[2024-11-23 23:45:32,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 52 states have (on average 1.4807692307692308) internal successors, (77), 70 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:32,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 77 transitions.
[2024-11-23 23:45:32,257 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 77 transitions. Word has length 17
[2024-11-23 23:45:32,257 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:45:32,257 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 77 transitions.
[2024-11-23 23:45:32,257 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)
[2024-11-23 23:45:32,257 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 77 transitions.
[2024-11-23 23:45:32,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2024-11-23 23:45:32,258 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:45:32,258 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:45:32,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2024-11-23 23:45:32,258 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] ===
[2024-11-23 23:45:32,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:45:32,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1870974681, now seen corresponding path program 1 times
[2024-11-23 23:45:32,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:45:32,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303891754]
[2024-11-23 23:45:32,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:45:32,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:45:32,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:45:32,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:45:32,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:45:32,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303891754]
[2024-11-23 23:45:32,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303891754] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:45:32,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:45:32,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-23 23:45:32,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62712110]
[2024-11-23 23:45:32,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:45:32,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-23 23:45:32,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:45:32,658 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-23 23:45:32,658 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2024-11-23 23:45:32,658 INFO L87 Difference]: Start difference. First operand 71 states and 77 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)
[2024-11-23 23:45:32,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:45:32,849 INFO L93 Difference]: Finished difference Result 83 states and 89 transitions.
[2024-11-23 23:45:32,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-23 23:45:32,850 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
[2024-11-23 23:45:32,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:45:32,851 INFO L225 Difference]: With dead ends: 83
[2024-11-23 23:45:32,851 INFO L226 Difference]: Without dead ends: 83
[2024-11-23 23:45:32,855 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2024-11-23 23:45:32,856 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 55 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-23 23:45:32,856 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 109 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-23 23:45:32,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states.
[2024-11-23 23:45:32,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 70.
[2024-11-23 23:45:32,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 52 states have (on average 1.4615384615384615) internal successors, (76), 69 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:32,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions.
[2024-11-23 23:45:32,860 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 17
[2024-11-23 23:45:32,860 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:45:32,861 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions.
[2024-11-23 23:45:32,861 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)
[2024-11-23 23:45:32,861 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions.
[2024-11-23 23:45:32,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2024-11-23 23:45:32,862 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:45:32,862 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:45:32,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2024-11-23 23:45:32,862 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] ===
[2024-11-23 23:45:32,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:45:32,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1563539501, now seen corresponding path program 1 times
[2024-11-23 23:45:32,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:45:32,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138815326]
[2024-11-23 23:45:32,863 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:45:32,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:45:32,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:45:33,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:45:33,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:45:33,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138815326]
[2024-11-23 23:45:33,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138815326] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:45:33,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:45:33,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-23 23:45:33,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667297732]
[2024-11-23 23:45:33,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:45:33,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-23 23:45:33,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:45:33,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-23 23:45:33,029 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-23 23:45:33,029 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:33,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:45:33,137 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions.
[2024-11-23 23:45:33,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-23 23:45:33,138 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19
[2024-11-23 23:45:33,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:45:33,139 INFO L225 Difference]: With dead ends: 67
[2024-11-23 23:45:33,139 INFO L226 Difference]: Without dead ends: 67
[2024-11-23 23:45:33,139 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2024-11-23 23:45:33,140 INFO L435 NwaCegarLoop]: 50 mSDtfsCounter, 33 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-23 23:45:33,140 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 144 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-23 23:45:33,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states.
[2024-11-23 23:45:33,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 64.
[2024-11-23 23:45:33,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 46 states have (on average 1.434782608695652) internal successors, (66), 63 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:33,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions.
[2024-11-23 23:45:33,145 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 19
[2024-11-23 23:45:33,145 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:45:33,145 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions.
[2024-11-23 23:45:33,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:33,145 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions.
[2024-11-23 23:45:33,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2024-11-23 23:45:33,149 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:45:33,149 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:45:33,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2024-11-23 23:45:33,150 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] ===
[2024-11-23 23:45:33,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:45:33,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1878845784, now seen corresponding path program 1 times
[2024-11-23 23:45:33,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:45:33,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755945598]
[2024-11-23 23:45:33,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:45:33,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:45:33,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:45:33,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:45:33,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:45:33,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755945598]
[2024-11-23 23:45:33,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755945598] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:45:33,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:45:33,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-23 23:45:33,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293469340]
[2024-11-23 23:45:33,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:45:33,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-23 23:45:33,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:45:33,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-23 23:45:33,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-23 23:45:33,312 INFO L87 Difference]: Start difference. First operand 64 states and 66 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 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)
[2024-11-23 23:45:33,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:45:33,413 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions.
[2024-11-23 23:45:33,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-23 23:45:33,413 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20
[2024-11-23 23:45:33,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:45:33,414 INFO L225 Difference]: With dead ends: 63
[2024-11-23 23:45:33,414 INFO L226 Difference]: Without dead ends: 63
[2024-11-23 23:45:33,414 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2024-11-23 23:45:33,414 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 27 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-23 23:45:33,415 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 129 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-23 23:45:33,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states.
[2024-11-23 23:45:33,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63.
[2024-11-23 23:45:33,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 46 states have (on average 1.4130434782608696) internal successors, (65), 62 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:33,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions.
[2024-11-23 23:45:33,419 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 20
[2024-11-23 23:45:33,419 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:45:33,419 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions.
[2024-11-23 23:45:33,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 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)
[2024-11-23 23:45:33,419 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions.
[2024-11-23 23:45:33,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2024-11-23 23:45:33,420 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:45:33,420 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:45:33,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2024-11-23 23:45:33,420 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] ===
[2024-11-23 23:45:33,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:45:33,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1844448410, now seen corresponding path program 1 times
[2024-11-23 23:45:33,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:45:33,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277152008]
[2024-11-23 23:45:33,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:45:33,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:45:33,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:45:33,846 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:45:33,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:45:33,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277152008]
[2024-11-23 23:45:33,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277152008] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-23 23:45:33,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400739319]
[2024-11-23 23:45:33,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:45:33,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:45:33,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 23:45:33,850 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 23:45:33,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-23 23:45:33,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:45:33,972 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 34 conjuncts are in the unsatisfiable core
[2024-11-23 23:45:33,978 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 23:45:34,076 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
[2024-11-23 23:45:34,131 INFO L349 Elim1Store]: treesize reduction 32, result has 36.0 percent of original size
[2024-11-23 23:45:34,132 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 23 treesize of output 24
[2024-11-23 23:45:34,163 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 25 treesize of output 13
[2024-11-23 23:45:34,203 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
[2024-11-23 23:45:34,262 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 25 treesize of output 13
[2024-11-23 23:45:34,267 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:45:34,268 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-23 23:45:34,435 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 38 treesize of output 34
[2024-11-23 23:45:35,105 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-23 23:45:35,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 135 treesize of output 339
[2024-11-23 23:45:35,892 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:45:35,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400739319] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-23 23:45:35,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-23 23:45:35,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15
[2024-11-23 23:45:35,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418437558]
[2024-11-23 23:45:35,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-23 23:45:35,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2024-11-23 23:45:35,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:45:35,893 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2024-11-23 23:45:35,894 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240
[2024-11-23 23:45:35,895 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand has 16 states, 15 states have (on average 2.4) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:36,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:45:36,330 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions.
[2024-11-23 23:45:36,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-11-23 23:45:36,331 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21
[2024-11-23 23:45:36,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:45:36,331 INFO L225 Difference]: With dead ends: 65
[2024-11-23 23:45:36,332 INFO L226 Difference]: Without dead ends: 65
[2024-11-23 23:45:36,332 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380
[2024-11-23 23:45:36,333 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 72 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-23 23:45:36,333 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 233 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-23 23:45:36,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states.
[2024-11-23 23:45:36,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 62.
[2024-11-23 23:45:36,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 46 states have (on average 1.391304347826087) internal successors, (64), 61 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)
[2024-11-23 23:45:36,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions.
[2024-11-23 23:45:36,336 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 21
[2024-11-23 23:45:36,336 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:45:36,336 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions.
[2024-11-23 23:45:36,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:36,337 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions.
[2024-11-23 23:45:36,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2024-11-23 23:45:36,337 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:45:36,337 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:45:36,355 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-23 23:45:36,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:45:36,538 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] ===
[2024-11-23 23:45:36,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:45:36,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1844448411, now seen corresponding path program 1 times
[2024-11-23 23:45:36,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:45:36,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171387080]
[2024-11-23 23:45:36,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:45:36,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:45:36,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:45:37,226 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:45:37,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:45:37,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171387080]
[2024-11-23 23:45:37,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171387080] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-23 23:45:37,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282019323]
[2024-11-23 23:45:37,227 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:45:37,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:45:37,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 23:45:37,229 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 23:45:37,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-23 23:45:37,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:45:37,358 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 46 conjuncts are in the unsatisfiable core
[2024-11-23 23:45:37,364 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 23:45:37,516 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 15 treesize of output 1
[2024-11-23 23:45:37,523 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
[2024-11-23 23:45:37,597 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size
[2024-11-23 23:45:37,597 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 24 treesize of output 27
[2024-11-23 23:45:37,617 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size
[2024-11-23 23:45:37,618 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 15 treesize of output 15
[2024-11-23 23:45:37,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19
[2024-11-23 23:45:37,662 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 26 treesize of output 14
[2024-11-23 23:45:37,705 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
[2024-11-23 23:45:37,715 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
[2024-11-23 23:45:37,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19
[2024-11-23 23:45:37,782 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 14
[2024-11-23 23:45:37,814 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:45:37,815 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-23 23:45:38,139 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 66 treesize of output 62
[2024-11-23 23:45:38,144 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 102 treesize of output 94
[2024-11-23 23:45:38,185 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 32 treesize of output 28
[2024-11-23 23:45:38,408 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-23 23:45:38,408 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 5 new quantified variables, introduced 10 case distinctions, treesize of input 64 treesize of output 134
[2024-11-23 23:45:38,431 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 68 treesize of output 64
[2024-11-23 23:45:38,632 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:45:38,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282019323] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-23 23:45:38,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-23 23:45:38,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22
[2024-11-23 23:45:38,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272407071]
[2024-11-23 23:45:38,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-23 23:45:38,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2024-11-23 23:45:38,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:45:38,633 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2024-11-23 23:45:38,633 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506
[2024-11-23 23:45:38,634 INFO L87 Difference]: Start difference. First operand 62 states and 64 transitions. Second operand has 23 states, 22 states have (on average 2.6818181818181817) internal successors, (59), 23 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)
[2024-11-23 23:45:39,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:45:39,366 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions.
[2024-11-23 23:45:39,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2024-11-23 23:45:39,367 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.6818181818181817) internal successors, (59), 23 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) Word has length 21
[2024-11-23 23:45:39,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:45:39,367 INFO L225 Difference]: With dead ends: 64
[2024-11-23 23:45:39,367 INFO L226 Difference]: Without dead ends: 64
[2024-11-23 23:45:39,368 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=145, Invalid=611, Unknown=0, NotChecked=0, Total=756
[2024-11-23 23:45:39,368 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 108 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2024-11-23 23:45:39,369 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 307 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2024-11-23 23:45:39,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states.
[2024-11-23 23:45:39,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61.
[2024-11-23 23:45:39,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 46 states have (on average 1.3695652173913044) internal successors, (63), 60 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:39,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions.
[2024-11-23 23:45:39,375 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 21
[2024-11-23 23:45:39,375 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:45:39,376 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions.
[2024-11-23 23:45:39,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.6818181818181817) internal successors, (59), 23 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)
[2024-11-23 23:45:39,376 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions.
[2024-11-23 23:45:39,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2024-11-23 23:45:39,376 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:45:39,376 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:45:39,386 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-11-23 23:45:39,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:45:39,577 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] ===
[2024-11-23 23:45:39,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:45:39,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1885322937, now seen corresponding path program 1 times
[2024-11-23 23:45:39,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:45:39,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884529920]
[2024-11-23 23:45:39,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:45:39,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:45:39,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:45:39,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:45:39,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:45:39,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884529920]
[2024-11-23 23:45:39,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884529920] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:45:39,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:45:39,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-23 23:45:39,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623634989]
[2024-11-23 23:45:39,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:45:39,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-23 23:45:39,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:45:39,713 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-23 23:45:39,713 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-23 23:45:39,713 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:39,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:45:39,841 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions.
[2024-11-23 23:45:39,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-23 23:45:39,842 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21
[2024-11-23 23:45:39,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:45:39,842 INFO L225 Difference]: With dead ends: 63
[2024-11-23 23:45:39,842 INFO L226 Difference]: Without dead ends: 63
[2024-11-23 23:45:39,843 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2024-11-23 23:45:39,843 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 23 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-23 23:45:39,843 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 112 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-23 23:45:39,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states.
[2024-11-23 23:45:39,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 60.
[2024-11-23 23:45:39,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 46 states have (on average 1.3478260869565217) internal successors, (62), 59 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:39,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions.
[2024-11-23 23:45:39,846 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 21
[2024-11-23 23:45:39,846 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:45:39,846 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions.
[2024-11-23 23:45:39,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:39,847 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions.
[2024-11-23 23:45:39,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2024-11-23 23:45:39,847 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:45:39,847 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:45:39,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2024-11-23 23:45:39,848 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] ===
[2024-11-23 23:45:39,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:45:39,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1684530998, now seen corresponding path program 1 times
[2024-11-23 23:45:39,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:45:39,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527140952]
[2024-11-23 23:45:39,848 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:45:39,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:45:39,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:45:39,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:45:39,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:45:39,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527140952]
[2024-11-23 23:45:39,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527140952] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:45:39,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:45:39,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-23 23:45:39,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426109915]
[2024-11-23 23:45:39,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:45:39,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-23 23:45:39,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:45:39,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-23 23:45:39,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2024-11-23 23:45:39,989 INFO L87 Difference]: Start difference. First operand 60 states and 62 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)
[2024-11-23 23:45:40,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:45:40,117 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions.
[2024-11-23 23:45:40,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-23 23:45:40,117 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 22
[2024-11-23 23:45:40,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:45:40,117 INFO L225 Difference]: With dead ends: 62
[2024-11-23 23:45:40,118 INFO L226 Difference]: Without dead ends: 62
[2024-11-23 23:45:40,118 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2024-11-23 23:45:40,118 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 26 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-23 23:45:40,118 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 102 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-23 23:45:40,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states.
[2024-11-23 23:45:40,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 59.
[2024-11-23 23:45:40,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 46 states have (on average 1.326086956521739) internal successors, (61), 58 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)
[2024-11-23 23:45:40,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions.
[2024-11-23 23:45:40,121 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 22
[2024-11-23 23:45:40,121 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:45:40,122 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions.
[2024-11-23 23:45:40,122 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)
[2024-11-23 23:45:40,122 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions.
[2024-11-23 23:45:40,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2024-11-23 23:45:40,122 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:45:40,122 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:45:40,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12
[2024-11-23 23:45:40,123 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] ===
[2024-11-23 23:45:40,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:45:40,123 INFO L85 PathProgramCache]: Analyzing trace with hash -680853284, now seen corresponding path program 1 times
[2024-11-23 23:45:40,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:45:40,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169431057]
[2024-11-23 23:45:40,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:45:40,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:45:40,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:45:40,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:45:40,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:45:40,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169431057]
[2024-11-23 23:45:40,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169431057] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:45:40,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:45:40,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-23 23:45:40,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193993399]
[2024-11-23 23:45:40,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:45:40,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-23 23:45:40,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:45:40,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-23 23:45:40,370 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-23 23:45:40,370 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:40,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:45:40,495 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions.
[2024-11-23 23:45:40,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-23 23:45:40,496 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23
[2024-11-23 23:45:40,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:45:40,496 INFO L225 Difference]: With dead ends: 58
[2024-11-23 23:45:40,496 INFO L226 Difference]: Without dead ends: 58
[2024-11-23 23:45:40,496 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56
[2024-11-23 23:45:40,497 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 35 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-23 23:45:40,497 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 72 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-23 23:45:40,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states.
[2024-11-23 23:45:40,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58.
[2024-11-23 23:45:40,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 46 states have (on average 1.3043478260869565) internal successors, (60), 57 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:40,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions.
[2024-11-23 23:45:40,499 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 23
[2024-11-23 23:45:40,499 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:45:40,499 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions.
[2024-11-23 23:45:40,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:40,499 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions.
[2024-11-23 23:45:40,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2024-11-23 23:45:40,499 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:45:40,503 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:45:40,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13
[2024-11-23 23:45:40,505 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] ===
[2024-11-23 23:45:40,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:45:40,505 INFO L85 PathProgramCache]: Analyzing trace with hash -680853283, now seen corresponding path program 1 times
[2024-11-23 23:45:40,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:45:40,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902781116]
[2024-11-23 23:45:40,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:45:40,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:45:40,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:45:40,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:45:40,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:45:40,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902781116]
[2024-11-23 23:45:40,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902781116] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:45:40,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:45:40,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-23 23:45:40,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746434031]
[2024-11-23 23:45:40,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:45:40,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-23 23:45:40,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:45:40,578 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-23 23:45:40,578 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-23 23:45:40,578 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:40,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:45:40,628 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions.
[2024-11-23 23:45:40,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-23 23:45:40,629 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23
[2024-11-23 23:45:40,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:45:40,629 INFO L225 Difference]: With dead ends: 53
[2024-11-23 23:45:40,629 INFO L226 Difference]: Without dead ends: 53
[2024-11-23 23:45:40,630 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-23 23:45:40,631 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 34 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-23 23:45:40,632 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 30 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-23 23:45:40,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states.
[2024-11-23 23:45:40,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53.
[2024-11-23 23:45:40,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 52 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:40,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions.
[2024-11-23 23:45:40,635 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 23
[2024-11-23 23:45:40,636 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:45:40,636 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions.
[2024-11-23 23:45:40,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:40,636 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions.
[2024-11-23 23:45:40,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2024-11-23 23:45:40,637 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:45:40,637 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:45:40,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14
[2024-11-23 23:45:40,639 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] ===
[2024-11-23 23:45:40,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:45:40,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1923861641, now seen corresponding path program 1 times
[2024-11-23 23:45:40,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:45:40,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488416184]
[2024-11-23 23:45:40,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:45:40,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:45:40,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:45:41,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:45:41,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 23:45:41,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488416184]
[2024-11-23 23:45:41,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488416184] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:45:41,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:45:41,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2024-11-23 23:45:41,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999224194]
[2024-11-23 23:45:41,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:45:41,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2024-11-23 23:45:41,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 23:45:41,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2024-11-23 23:45:41,338 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110
[2024-11-23 23:45:41,339 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:41,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:45:41,625 INFO L93 Difference]: Finished difference Result 75 states and 78 transitions.
[2024-11-23 23:45:41,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2024-11-23 23:45:41,625 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28
[2024-11-23 23:45:41,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:45:41,626 INFO L225 Difference]: With dead ends: 75
[2024-11-23 23:45:41,626 INFO L226 Difference]: Without dead ends: 75
[2024-11-23 23:45:41,626 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272
[2024-11-23 23:45:41,627 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 26 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-23 23:45:41,627 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 274 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-23 23:45:41,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states.
[2024-11-23 23:45:41,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 71.
[2024-11-23 23:45:41,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 64 states have (on average 1.15625) internal successors, (74), 70 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:41,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions.
[2024-11-23 23:45:41,630 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 28
[2024-11-23 23:45:41,630 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:45:41,630 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 74 transitions.
[2024-11-23 23:45:41,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:41,630 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 74 transitions.
[2024-11-23 23:45:41,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2024-11-23 23:45:41,631 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:45:41,631 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:45:41,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15
[2024-11-23 23:45:41,631 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] ===
[2024-11-23 23:45:41,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:45:41,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1923858985, now seen corresponding path program 1 times
[2024-11-23 23:45:41,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:45:41,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667325916]
[2024-11-23 23:45:41,632 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:45:41,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:45:41,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-11-23 23:45:41,660 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2024-11-23 23:45:41,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-11-23 23:45:41,693 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2024-11-23 23:45:41,693 INFO L340 BasicCegarLoop]: Counterexample is feasible
[2024-11-23 23:45:41,694 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK (40 of 41 remaining)
[2024-11-23 23:45:41,696 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 41 remaining)
[2024-11-23 23:45:41,696 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 41 remaining)
[2024-11-23 23:45:41,697 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 41 remaining)
[2024-11-23 23:45:41,697 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 41 remaining)
[2024-11-23 23:45:41,697 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 41 remaining)
[2024-11-23 23:45:41,697 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 41 remaining)
[2024-11-23 23:45:41,697 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 41 remaining)
[2024-11-23 23:45:41,697 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 41 remaining)
[2024-11-23 23:45:41,697 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 41 remaining)
[2024-11-23 23:45:41,697 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 41 remaining)
[2024-11-23 23:45:41,698 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 41 remaining)
[2024-11-23 23:45:41,698 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 41 remaining)
[2024-11-23 23:45:41,698 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 41 remaining)
[2024-11-23 23:45:41,698 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 41 remaining)
[2024-11-23 23:45:41,698 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 41 remaining)
[2024-11-23 23:45:41,698 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 41 remaining)
[2024-11-23 23:45:41,698 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 41 remaining)
[2024-11-23 23:45:41,698 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 41 remaining)
[2024-11-23 23:45:41,699 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 41 remaining)
[2024-11-23 23:45:41,699 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 41 remaining)
[2024-11-23 23:45:41,699 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 41 remaining)
[2024-11-23 23:45:41,699 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 41 remaining)
[2024-11-23 23:45:41,699 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE (17 of 41 remaining)
[2024-11-23 23:45:41,699 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE (16 of 41 remaining)
[2024-11-23 23:45:41,699 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE (15 of 41 remaining)
[2024-11-23 23:45:41,699 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 41 remaining)
[2024-11-23 23:45:41,699 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 41 remaining)
[2024-11-23 23:45:41,699 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 41 remaining)
[2024-11-23 23:45:41,699 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 41 remaining)
[2024-11-23 23:45:41,700 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 41 remaining)
[2024-11-23 23:45:41,700 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 41 remaining)
[2024-11-23 23:45:41,700 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 41 remaining)
[2024-11-23 23:45:41,700 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 41 remaining)
[2024-11-23 23:45:41,700 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 41 remaining)
[2024-11-23 23:45:41,700 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 41 remaining)
[2024-11-23 23:45:41,701 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE (4 of 41 remaining)
[2024-11-23 23:45:41,701 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE (3 of 41 remaining)
[2024-11-23 23:45:41,701 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE (2 of 41 remaining)
[2024-11-23 23:45:41,701 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 41 remaining)
[2024-11-23 23:45:41,701 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 41 remaining)
[2024-11-23 23:45:41,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16
[2024-11-23 23:45:41,704 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:45:41,728 INFO L170 ceAbstractionStarter]: Computing trace abstraction results
[2024-11-23 23:45:41,733 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 11:45:41 BoogieIcfgContainer
[2024-11-23 23:45:41,733 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-11-23 23:45:41,734 INFO L112 PluginConnector]: ------------------------Witness Printer----------------------------
[2024-11-23 23:45:41,734 INFO L270 PluginConnector]: Initializing Witness Printer...
[2024-11-23 23:45:41,734 INFO L274 PluginConnector]: Witness Printer initialized
[2024-11-23 23:45:41,737 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:45:29" (3/4) ...
[2024-11-23 23:45:41,739 INFO L149 WitnessPrinter]: No result that supports witness generation found
[2024-11-23 23:45:41,740 INFO L131 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2024-11-23 23:45:41,741 INFO L158 Benchmark]: Toolchain (without parser) took 13497.27ms. Allocated memory was 117.4MB in the beginning and 176.2MB in the end (delta: 58.7MB). Free memory was 91.3MB in the beginning and 83.3MB in the end (delta: 8.0MB). Peak memory consumption was 66.3MB. Max. memory is 16.1GB.
[2024-11-23 23:45:41,741 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 117.4MB. Free memory is still 73.2MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-11-23 23:45:41,741 INFO L158 Benchmark]: CACSL2BoogieTranslator took 509.48ms. Allocated memory is still 117.4MB. Free memory was 91.3MB in the beginning and 74.1MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
[2024-11-23 23:45:41,742 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.93ms. Allocated memory is still 117.4MB. Free memory was 74.1MB in the beginning and 72.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-23 23:45:41,742 INFO L158 Benchmark]: Boogie Preprocessor took 45.13ms. Allocated memory is still 117.4MB. Free memory was 72.5MB in the beginning and 70.5MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-11-23 23:45:41,743 INFO L158 Benchmark]: RCFGBuilder took 631.70ms. Allocated memory is still 117.4MB. Free memory was 70.5MB in the beginning and 51.3MB in the end (delta: 19.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
[2024-11-23 23:45:41,743 INFO L158 Benchmark]: TraceAbstraction took 12257.73ms. Allocated memory was 117.4MB in the beginning and 176.2MB in the end (delta: 58.7MB). Free memory was 50.7MB in the beginning and 83.4MB in the end (delta: -32.6MB). Peak memory consumption was 24.4MB. Max. memory is 16.1GB.
[2024-11-23 23:45:41,743 INFO L158 Benchmark]: Witness Printer took 6.36ms. Allocated memory is still 176.2MB. Free memory was 83.4MB in the beginning and 83.3MB in the end (delta: 33.1kB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-23 23:45:41,745 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.37ms. Allocated memory is still 117.4MB. Free memory is still 73.2MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 509.48ms. Allocated memory is still 117.4MB. Free memory was 91.3MB in the beginning and 74.1MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 36.93ms. Allocated memory is still 117.4MB. Free memory was 74.1MB in the beginning and 72.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB.
* Boogie Preprocessor took 45.13ms. Allocated memory is still 117.4MB. Free memory was 72.5MB in the beginning and 70.5MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* RCFGBuilder took 631.70ms. Allocated memory is still 117.4MB. Free memory was 70.5MB in the beginning and 51.3MB in the end (delta: 19.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
* TraceAbstraction took 12257.73ms. Allocated memory was 117.4MB in the beginning and 176.2MB in the end (delta: 58.7MB). Free memory was 50.7MB in the beginning and 83.4MB in the end (delta: -32.6MB). Peak memory consumption was 24.4MB. Max. memory is 16.1GB.
* Witness Printer took 6.36ms. Allocated memory is still 176.2MB. Free memory was 83.4MB in the beginning and 83.3MB in the end (delta: 33.1kB). There was no memory consumed. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: ErrorAutomatonStatistics
NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
- UnprovableResult [Line: 537]: Unable to prove that all allocated memory was freed
Unable to prove that all allocated memory was freed
Reason: overapproximation of memtrack at line 537.
Possible FailurePath:
[L539] struct item *list = ((void *)0);
[L539] struct item *list = ((void *)0);
[L541] CALL append(&list)
[L530] struct item *item = malloc(sizeof *item);
[L531] EXPR \read(**plist)
[L531] item->next = *plist
[L532] EXPR item->next
[L532-L534] EXPR (item->next)
? item->next->data
: malloc(sizeof *item)
[L532-L534] EXPR (item->next)
? item->next->data
: malloc(sizeof *item)
VAL [item={3:0}, plist={6:0}]
[L532-L534] item->data = (item->next)
? item->next->data
: malloc(sizeof *item)
[L535] *plist = item
[L541] RET append(&list)
[L542] COND FALSE !(__VERIFIER_nondet_int())
[L543] \read(*list)
[L543] COND TRUE \read(*list)
[L544] EXPR \read(*list)
[L544] EXPR list->next
[L544] struct item *next = list->next;
[L545] EXPR \read(*list)
[L545] free(list)
VAL [list={6:0}, next={0:0}]
[L545] free(list)
VAL [list={6:0}, next={0:0}]
[L545] free(list)
[L546] list = next
[L548] \read(*list)
[L548] COND FALSE !(\read(*list))
[L553] return 0;
[L539] struct item *list = ((void *)0);
[L553] return 0;
VAL [\result=0]
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 545]: Unable to prove that free always succeeds
Unable to prove that free always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 545]: Unable to prove that free always succeeds
Unable to prove that free always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 545]: Unable to prove that free always succeeds
Unable to prove that free always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 550]: Unable to prove that free always succeeds
Unable to prove that free always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 550]: Unable to prove that free always succeeds
Unable to prove that free always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 550]: Unable to prove that free always succeeds
Unable to prove that free always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 1 procedures, 83 locations, 41 error locations. Started 1 CEGAR loops. OverallTime: 12.2s, OverallIterations: 17, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 675 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 675 mSDsluCounter, 2234 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1562 mSDsCounter, 84 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1964 IncrementalHoareTripleChecker+Invalid, 2048 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 84 mSolverCounterUnsat, 672 mSDtfsCounter, 1964 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 201 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83occurred in iteration=0, InterpolantAutomatonStates: 94, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 16 MinimizatonAttempts, 56 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 7.2s InterpolantComputationTime, 330 NumberOfCodeBlocks, 330 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 324 ConstructedInterpolants, 10 QuantifiedInterpolants, 3697 SizeOfPredicates, 28 NumberOfNonLiveVariables, 412 ConjunctsInSsa, 80 ConjunctsInUnsatCore, 20 InterpolantComputations, 14 PerfectInterpolantSequences, 6/36 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available
RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces
[2024-11-23 23:45:41,775 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0
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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0232-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC --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 1228d922512a0e9364273220ccc1e5afc3bfb7c0e22f10439a1ba902492e71b2
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-6497de0
[2024-11-23 23:45:44,530 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-11-23 23:45:44,666 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf
[2024-11-23 23:45:44,676 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-11-23 23:45:44,679 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-23 23:45:44,716 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-23 23:45:44,717 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-23 23:45:44,717 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-23 23:45:44,718 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-23 23:45:44,718 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-11-23 23:45:44,719 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-23 23:45:44,719 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-23 23:45:44,720 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-23 23:45:44,720 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-11-23 23:45:44,720 INFO L153 SettingsManager]: * Use SBE=true
[2024-11-23 23:45:44,721 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-23 23:45:44,721 INFO L153 SettingsManager]: * sizeof long=4
[2024-11-23 23:45:44,721 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-11-23 23:45:44,721 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-11-23 23:45:44,721 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-11-23 23:45:44,721 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true
[2024-11-23 23:45:44,721 INFO L153 SettingsManager]: * Bitprecise bitfields=true
[2024-11-23 23:45:44,722 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true
[2024-11-23 23:45:44,722 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-23 23:45:44,722 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2024-11-23 23:45:44,722 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true
[2024-11-23 23:45:44,722 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-23 23:45:44,722 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false
[2024-11-23 23:45:44,722 INFO L153 SettingsManager]: * sizeof long double=12
[2024-11-23 23:45:44,723 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-11-23 23:45:44,723 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-11-23 23:45:44,723 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-11-23 23:45:44,724 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-23 23:45:44,724 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-23 23:45:44,724 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-23 23:45:44,724 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-23 23:45:44,724 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-23 23:45:44,724 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-23 23:45:44,724 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-23 23:45:44,724 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-23 23:45:44,724 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-23 23:45:44,725 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-23 23:45:44,725 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-11-23 23:45:44,725 INFO L153 SettingsManager]: * Trace refinement strategy=FOX
[2024-11-23 23:45:44,726 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-23 23:45:44,726 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-23 23:45:44,726 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-23 23:45:44,726 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-11-23 23:45:44,726 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-23 23:45:44,726 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC
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_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC
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 -> 1228d922512a0e9364273220ccc1e5afc3bfb7c0e22f10439a1ba902492e71b2
[2024-11-23 23:45:45,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-23 23:45:45,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-23 23:45:45,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-23 23:45:45,063 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-11-23 23:45:45,063 INFO L274 PluginConnector]: CDTParser initialized
[2024-11-23 23:45:45,066 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/memsafety/test-0232-1.i
[2024-11-23 23:45:48,243 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/data/76f16e6e1/054b8855f157424089e800d76f72de27/FLAG1c606ea14
[2024-11-23 23:45:48,607 INFO L384 CDTParser]: Found 1 translation units.
[2024-11-23 23:45:48,608 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/sv-benchmarks/c/memsafety/test-0232-1.i
[2024-11-23 23:45:48,620 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/data/76f16e6e1/054b8855f157424089e800d76f72de27/FLAG1c606ea14
[2024-11-23 23:45:48,642 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/data/76f16e6e1/054b8855f157424089e800d76f72de27
[2024-11-23 23:45:48,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-23 23:45:48,649 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-23 23:45:48,651 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-23 23:45:48,651 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-23 23:45:48,657 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-23 23:45:48,658 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:45:48" (1/1) ...
[2024-11-23 23:45:48,661 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@101f7366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:48, skipping insertion in model container
[2024-11-23 23:45:48,661 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:45:48" (1/1) ...
[2024-11-23 23:45:48,708 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-11-23 23:45:49,108 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-23 23:45:49,128 INFO L200 MainTranslator]: Completed pre-run
[2024-11-23 23:45:49,188 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-23 23:45:49,223 INFO L204 MainTranslator]: Completed translation
[2024-11-23 23:45:49,223 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:49 WrapperNode
[2024-11-23 23:45:49,224 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-23 23:45:49,226 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-23 23:45:49,226 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-23 23:45:49,227 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-23 23:45:49,236 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:49" (1/1) ...
[2024-11-23 23:45:49,263 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:49" (1/1) ...
[2024-11-23 23:45:49,291 INFO L138 Inliner]: procedures = 127, calls = 32, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 81
[2024-11-23 23:45:49,292 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-23 23:45:49,293 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-23 23:45:49,293 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-23 23:45:49,293 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-11-23 23:45:49,303 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:49" (1/1) ...
[2024-11-23 23:45:49,304 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:49" (1/1) ...
[2024-11-23 23:45:49,312 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:49" (1/1) ...
[2024-11-23 23:45:49,345 INFO L175 MemorySlicer]: Split 20 memory accesses to 3 slices as follows [2, 11, 7]. 55 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0]. The 5 writes are split as follows [0, 3, 2].
[2024-11-23 23:45:49,348 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:49" (1/1) ...
[2024-11-23 23:45:49,348 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:49" (1/1) ...
[2024-11-23 23:45:49,361 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:49" (1/1) ...
[2024-11-23 23:45:49,364 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:49" (1/1) ...
[2024-11-23 23:45:49,369 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:49" (1/1) ...
[2024-11-23 23:45:49,371 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:49" (1/1) ...
[2024-11-23 23:45:49,376 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:49" (1/1) ...
[2024-11-23 23:45:49,378 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-23 23:45:49,383 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-23 23:45:49,384 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-11-23 23:45:49,384 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-11-23 23:45:49,385 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:49" (1/1) ...
[2024-11-23 23:45:49,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-23 23:45:49,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 23:45:49,431 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-23 23:45:49,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-23 23:45:49,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2024-11-23 23:45:49,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-23 23:45:49,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2024-11-23 23:45:49,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0
[2024-11-23 23:45:49,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1
[2024-11-23 23:45:49,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2
[2024-11-23 23:45:49,467 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0
[2024-11-23 23:45:49,467 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1
[2024-11-23 23:45:49,467 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2
[2024-11-23 23:45:49,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2024-11-23 23:45:49,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0
[2024-11-23 23:45:49,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1
[2024-11-23 23:45:49,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2
[2024-11-23 23:45:49,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-23 23:45:49,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1
[2024-11-23 23:45:49,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2
[2024-11-23 23:45:49,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-23 23:45:49,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-23 23:45:49,602 INFO L234 CfgBuilder]: Building ICFG
[2024-11-23 23:45:49,604 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-23 23:45:50,154 INFO L? ?]: Removed 91 outVars from TransFormulas that were not future-live.
[2024-11-23 23:45:50,154 INFO L283 CfgBuilder]: Performing block encoding
[2024-11-23 23:45:50,165 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-23 23:45:50,166 INFO L312 CfgBuilder]: Removed 2 assume(true) statements.
[2024-11-23 23:45:50,166 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:45:50 BoogieIcfgContainer
[2024-11-23 23:45:50,166 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-23 23:45:50,168 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-23 23:45:50,169 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-11-23 23:45:50,174 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-11-23 23:45:50,174 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:45:48" (1/3) ...
[2024-11-23 23:45:50,175 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44d02f7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:45:50, skipping insertion in model container
[2024-11-23 23:45:50,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:49" (2/3) ...
[2024-11-23 23:45:50,175 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44d02f7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:45:50, skipping insertion in model container
[2024-11-23 23:45:50,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:45:50" (3/3) ...
[2024-11-23 23:45:50,177 INFO L128 eAbstractionObserver]: Analyzing ICFG test-0232-1.i
[2024-11-23 23:45:50,193 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-23 23:45:50,194 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG test-0232-1.i that has 1 procedures, 83 locations, 1 initial locations, 2 loop locations, and 41 error locations.
[2024-11-23 23:45:50,234 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-23 23:45:50,247 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;@4e6ab67b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-23 23:45:50,247 INFO L334 AbstractCegarLoop]: Starting to check reachability of 41 error locations.
[2024-11-23 23:45:50,252 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 82 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)
[2024-11-23 23:45:50,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5
[2024-11-23 23:45:50,257 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:45:50,258 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1]
[2024-11-23 23:45:50,258 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] ===
[2024-11-23 23:45:50,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:45:50,264 INFO L85 PathProgramCache]: Analyzing trace with hash 925637, now seen corresponding path program 1 times
[2024-11-23 23:45:50,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-23 23:45:50,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1980940752]
[2024-11-23 23:45:50,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:45:50,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:45:50,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 23:45:50,283 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 23:45:50,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-23 23:45:50,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:45:50,386 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 7 conjuncts are in the unsatisfiable core
[2024-11-23 23:45:50,391 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 23:45:50,446 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
[2024-11-23 23:45:50,545 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size
[2024-11-23 23:45:50,546 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
[2024-11-23 23:45:50,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:45:50,579 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-23 23:45:50,579 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-23 23:45:50,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980940752]
[2024-11-23 23:45:50,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980940752] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:45:50,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:45:50,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-23 23:45:50,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882261931]
[2024-11-23 23:45:50,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:45:50,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-23 23:45:50,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-23 23:45:50,620 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-23 23:45:50,621 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-23 23:45:50,623 INFO L87 Difference]: Start difference. First operand has 83 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 82 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) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:50,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:45:50,971 INFO L93 Difference]: Finished difference Result 75 states and 78 transitions.
[2024-11-23 23:45:50,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-23 23:45:50,974 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4
[2024-11-23 23:45:50,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:45:50,982 INFO L225 Difference]: With dead ends: 75
[2024-11-23 23:45:50,983 INFO L226 Difference]: Without dead ends: 73
[2024-11-23 23:45:50,984 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2024-11-23 23:45:50,987 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 76 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-23 23:45:50,990 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 65 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-23 23:45:51,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states.
[2024-11-23 23:45:51,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73.
[2024-11-23 23:45:51,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 40 states have (on average 1.9) internal successors, (76), 72 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:51,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions.
[2024-11-23 23:45:51,035 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 4
[2024-11-23 23:45:51,036 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:45:51,036 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions.
[2024-11-23 23:45:51,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:51,036 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions.
[2024-11-23 23:45:51,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5
[2024-11-23 23:45:51,037 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:45:51,037 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1]
[2024-11-23 23:45:51,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2024-11-23 23:45:51,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:45:51,241 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] ===
[2024-11-23 23:45:51,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:45:51,242 INFO L85 PathProgramCache]: Analyzing trace with hash 925638, now seen corresponding path program 1 times
[2024-11-23 23:45:51,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-23 23:45:51,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2013084466]
[2024-11-23 23:45:51,242 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:45:51,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:45:51,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 23:45:51,246 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 23:45:51,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-23 23:45:51,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:45:51,318 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 12 conjuncts are in the unsatisfiable core
[2024-11-23 23:45:51,320 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 23:45:51,333 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
[2024-11-23 23:45:51,342 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
[2024-11-23 23:45:51,411 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-23 23:45:51,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9
[2024-11-23 23:45:51,433 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size
[2024-11-23 23:45:51,434 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
[2024-11-23 23:45:51,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:45:51,463 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-23 23:45:51,463 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-23 23:45:51,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013084466]
[2024-11-23 23:45:51,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013084466] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:45:51,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:45:51,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-23 23:45:51,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523475603]
[2024-11-23 23:45:51,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:45:51,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-23 23:45:51,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-23 23:45:51,466 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-23 23:45:51,467 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-23 23:45:51,467 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:51,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:45:51,865 INFO L93 Difference]: Finished difference Result 89 states and 93 transitions.
[2024-11-23 23:45:51,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-23 23:45:51,869 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4
[2024-11-23 23:45:51,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:45:51,870 INFO L225 Difference]: With dead ends: 89
[2024-11-23 23:45:51,870 INFO L226 Difference]: Without dead ends: 89
[2024-11-23 23:45:51,871 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2024-11-23 23:45:51,871 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 73 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2024-11-23 23:45:51,872 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 67 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2024-11-23 23:45:51,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states.
[2024-11-23 23:45:51,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 78.
[2024-11-23 23:45:51,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 49 states have (on average 1.7551020408163265) internal successors, (86), 77 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:51,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions.
[2024-11-23 23:45:51,886 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 4
[2024-11-23 23:45:51,886 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:45:51,886 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions.
[2024-11-23 23:45:51,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:51,886 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions.
[2024-11-23 23:45:51,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6
[2024-11-23 23:45:51,891 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:45:51,891 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1]
[2024-11-23 23:45:51,919 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-11-23 23:45:52,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:45:52,092 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] ===
[2024-11-23 23:45:52,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:45:52,093 INFO L85 PathProgramCache]: Analyzing trace with hash 28694727, now seen corresponding path program 1 times
[2024-11-23 23:45:52,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-23 23:45:52,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1901025374]
[2024-11-23 23:45:52,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:45:52,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:45:52,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 23:45:52,096 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 23:45:52,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-23 23:45:52,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:45:52,169 INFO L256 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-23 23:45:52,170 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 23:45:52,178 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
[2024-11-23 23:45:52,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:45:52,189 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-23 23:45:52,190 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-23 23:45:52,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901025374]
[2024-11-23 23:45:52,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901025374] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:45:52,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:45:52,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-23 23:45:52,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944057158]
[2024-11-23 23:45:52,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:45:52,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-23 23:45:52,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-23 23:45:52,191 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-23 23:45:52,191 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-23 23:45:52,192 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:52,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:45:52,358 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions.
[2024-11-23 23:45:52,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-23 23:45:52,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 5
[2024-11-23 23:45:52,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:45:52,360 INFO L225 Difference]: With dead ends: 74
[2024-11-23 23:45:52,360 INFO L226 Difference]: Without dead ends: 74
[2024-11-23 23:45:52,360 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-23 23:45:52,361 INFO L435 NwaCegarLoop]: 55 mSDtfsCounter, 12 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-23 23:45:52,361 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 80 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-23 23:45:52,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states.
[2024-11-23 23:45:52,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74.
[2024-11-23 23:45:52,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 49 states have (on average 1.653061224489796) internal successors, (81), 73 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)
[2024-11-23 23:45:52,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions.
[2024-11-23 23:45:52,367 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 5
[2024-11-23 23:45:52,367 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:45:52,368 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions.
[2024-11-23 23:45:52,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:52,368 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions.
[2024-11-23 23:45:52,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6
[2024-11-23 23:45:52,368 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:45:52,368 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1]
[2024-11-23 23:45:52,379 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-11-23 23:45:52,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:45:52,569 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] ===
[2024-11-23 23:45:52,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:45:52,569 INFO L85 PathProgramCache]: Analyzing trace with hash 28694728, now seen corresponding path program 1 times
[2024-11-23 23:45:52,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-23 23:45:52,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1326854282]
[2024-11-23 23:45:52,570 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:45:52,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:45:52,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 23:45:52,574 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 23:45:52,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-23 23:45:52,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:45:52,640 INFO L256 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-11-23 23:45:52,641 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 23:45:52,648 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
[2024-11-23 23:45:52,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:45:52,674 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-23 23:45:52,675 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-23 23:45:52,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326854282]
[2024-11-23 23:45:52,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326854282] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:45:52,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:45:52,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-23 23:45:52,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173611290]
[2024-11-23 23:45:52,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:45:52,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-23 23:45:52,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-23 23:45:52,678 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-23 23:45:52,678 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-23 23:45:52,678 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:52,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:45:52,856 INFO L93 Difference]: Finished difference Result 70 states and 76 transitions.
[2024-11-23 23:45:52,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-23 23:45:52,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 5
[2024-11-23 23:45:52,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:45:52,857 INFO L225 Difference]: With dead ends: 70
[2024-11-23 23:45:52,857 INFO L226 Difference]: Without dead ends: 70
[2024-11-23 23:45:52,857 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-23 23:45:52,858 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 12 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-23 23:45:52,858 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 82 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-23 23:45:52,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states.
[2024-11-23 23:45:52,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70.
[2024-11-23 23:45:52,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 69 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:52,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions.
[2024-11-23 23:45:52,866 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 5
[2024-11-23 23:45:52,866 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:45:52,866 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions.
[2024-11-23 23:45:52,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:52,866 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions.
[2024-11-23 23:45:52,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2024-11-23 23:45:52,870 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:45:52,870 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:45:52,879 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2024-11-23 23:45:53,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:45:53,071 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] ===
[2024-11-23 23:45:53,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:45:53,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1328641136, now seen corresponding path program 1 times
[2024-11-23 23:45:53,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-23 23:45:53,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1334396912]
[2024-11-23 23:45:53,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:45:53,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:45:53,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 23:45:53,075 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 23:45:53,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-11-23 23:45:53,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:45:53,152 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 15 conjuncts are in the unsatisfiable core
[2024-11-23 23:45:53,154 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 23:45:53,250 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
[2024-11-23 23:45:53,267 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
[2024-11-23 23:45:53,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:45:53,337 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-23 23:45:53,337 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-23 23:45:53,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334396912]
[2024-11-23 23:45:53,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334396912] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:45:53,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:45:53,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2024-11-23 23:45:53,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032979121]
[2024-11-23 23:45:53,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:45:53,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-23 23:45:53,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-23 23:45:53,339 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-23 23:45:53,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-23 23:45:53,339 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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)
[2024-11-23 23:45:53,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:45:53,768 INFO L93 Difference]: Finished difference Result 80 states and 86 transitions.
[2024-11-23 23:45:53,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-11-23 23:45:53,769 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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
[2024-11-23 23:45:53,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:45:53,771 INFO L225 Difference]: With dead ends: 80
[2024-11-23 23:45:53,772 INFO L226 Difference]: Without dead ends: 80
[2024-11-23 23:45:53,772 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132
[2024-11-23 23:45:53,773 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 20 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-23 23:45:53,773 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 310 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-23 23:45:53,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states.
[2024-11-23 23:45:53,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76.
[2024-11-23 23:45:53,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 55 states have (on average 1.490909090909091) 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)
[2024-11-23 23:45:53,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 82 transitions.
[2024-11-23 23:45:53,778 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 82 transitions. Word has length 10
[2024-11-23 23:45:53,778 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:45:53,779 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 82 transitions.
[2024-11-23 23:45:53,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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)
[2024-11-23 23:45:53,779 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 82 transitions.
[2024-11-23 23:45:53,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2024-11-23 23:45:53,779 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:45:53,779 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:45:53,788 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2024-11-23 23:45:53,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:45:53,983 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] ===
[2024-11-23 23:45:53,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:45:53,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1762075788, now seen corresponding path program 1 times
[2024-11-23 23:45:53,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-23 23:45:53,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1315275584]
[2024-11-23 23:45:53,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:45:53,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:45:53,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 23:45:53,988 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 23:45:53,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2024-11-23 23:45:54,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:45:54,078 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 9 conjuncts are in the unsatisfiable core
[2024-11-23 23:45:54,080 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 23:45:54,196 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-23 23:45:54,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9
[2024-11-23 23:45:54,207 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size
[2024-11-23 23:45:54,208 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
[2024-11-23 23:45:54,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:45:54,242 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-23 23:45:54,242 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-23 23:45:54,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315275584]
[2024-11-23 23:45:54,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315275584] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:45:54,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:45:54,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-23 23:45:54,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598347915]
[2024-11-23 23:45:54,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:45:54,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-23 23:45:54,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-23 23:45:54,243 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-23 23:45:54,243 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2024-11-23 23:45:54,243 INFO L87 Difference]: Start difference. First operand 76 states and 82 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)
[2024-11-23 23:45:54,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:45:54,451 INFO L93 Difference]: Finished difference Result 75 states and 81 transitions.
[2024-11-23 23:45:54,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-23 23:45:54,452 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
[2024-11-23 23:45:54,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:45:54,453 INFO L225 Difference]: With dead ends: 75
[2024-11-23 23:45:54,453 INFO L226 Difference]: Without dead ends: 75
[2024-11-23 23:45:54,453 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56
[2024-11-23 23:45:54,454 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 68 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-23 23:45:54,454 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 103 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-23 23:45:54,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states.
[2024-11-23 23:45:54,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72.
[2024-11-23 23:45:54,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 52 states have (on average 1.5) internal successors, (78), 71 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:54,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 78 transitions.
[2024-11-23 23:45:54,458 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 78 transitions. Word has length 11
[2024-11-23 23:45:54,459 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:45:54,459 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 78 transitions.
[2024-11-23 23:45:54,459 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)
[2024-11-23 23:45:54,459 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 78 transitions.
[2024-11-23 23:45:54,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2024-11-23 23:45:54,459 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:45:54,459 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:45:54,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2024-11-23 23:45:54,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:45:54,660 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] ===
[2024-11-23 23:45:54,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:45:54,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1870974680, now seen corresponding path program 1 times
[2024-11-23 23:45:54,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-23 23:45:54,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2034848565]
[2024-11-23 23:45:54,661 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:45:54,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:45:54,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 23:45:54,663 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 23:45:54,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2024-11-23 23:45:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:45:54,755 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjuncts are in the unsatisfiable core
[2024-11-23 23:45:54,757 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 23:45:54,867 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
[2024-11-23 23:45:54,900 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 19 treesize of output 11
[2024-11-23 23:45:54,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:45:54,926 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-23 23:45:54,926 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-23 23:45:54,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034848565]
[2024-11-23 23:45:54,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034848565] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:45:54,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:45:54,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-23 23:45:54,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377875871]
[2024-11-23 23:45:54,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:45:54,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-23 23:45:54,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-23 23:45:54,928 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-23 23:45:54,928 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2024-11-23 23:45:54,928 INFO L87 Difference]: Start difference. First operand 72 states and 78 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)
[2024-11-23 23:45:55,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:45:55,398 INFO L93 Difference]: Finished difference Result 83 states and 87 transitions.
[2024-11-23 23:45:55,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-23 23:45:55,402 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
[2024-11-23 23:45:55,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:45:55,403 INFO L225 Difference]: With dead ends: 83
[2024-11-23 23:45:55,403 INFO L226 Difference]: Without dead ends: 83
[2024-11-23 23:45:55,403 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2024-11-23 23:45:55,404 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 48 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2024-11-23 23:45:55,404 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 123 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2024-11-23 23:45:55,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states.
[2024-11-23 23:45:55,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 71.
[2024-11-23 23:45:55,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 52 states have (on average 1.4807692307692308) internal successors, (77), 70 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:55,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 77 transitions.
[2024-11-23 23:45:55,417 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 77 transitions. Word has length 17
[2024-11-23 23:45:55,417 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:45:55,417 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 77 transitions.
[2024-11-23 23:45:55,417 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)
[2024-11-23 23:45:55,417 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 77 transitions.
[2024-11-23 23:45:55,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2024-11-23 23:45:55,417 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:45:55,418 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:45:55,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2024-11-23 23:45:55,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:45:55,618 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] ===
[2024-11-23 23:45:55,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:45:55,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1870974681, now seen corresponding path program 1 times
[2024-11-23 23:45:55,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-23 23:45:55,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2039377211]
[2024-11-23 23:45:55,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:45:55,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:45:55,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 23:45:55,623 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 23:45:55,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2024-11-23 23:45:55,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:45:55,715 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 14 conjuncts are in the unsatisfiable core
[2024-11-23 23:45:55,717 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 23:45:55,899 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
[2024-11-23 23:45:55,911 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
[2024-11-23 23:45:55,977 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 17 treesize of output 9
[2024-11-23 23:45:56,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:45:56,006 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-23 23:45:56,006 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-23 23:45:56,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039377211]
[2024-11-23 23:45:56,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039377211] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:45:56,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:45:56,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-23 23:45:56,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247552432]
[2024-11-23 23:45:56,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:45:56,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-23 23:45:56,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-23 23:45:56,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-23 23:45:56,008 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2024-11-23 23:45:56,008 INFO L87 Difference]: Start difference. First operand 71 states and 77 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)
[2024-11-23 23:45:56,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:45:56,458 INFO L93 Difference]: Finished difference Result 83 states and 89 transitions.
[2024-11-23 23:45:56,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-23 23:45:56,459 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
[2024-11-23 23:45:56,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:45:56,460 INFO L225 Difference]: With dead ends: 83
[2024-11-23 23:45:56,460 INFO L226 Difference]: Without dead ends: 83
[2024-11-23 23:45:56,460 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2024-11-23 23:45:56,461 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 55 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2024-11-23 23:45:56,461 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 109 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2024-11-23 23:45:56,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states.
[2024-11-23 23:45:56,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 70.
[2024-11-23 23:45:56,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 52 states have (on average 1.4615384615384615) internal successors, (76), 69 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:56,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions.
[2024-11-23 23:45:56,465 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 17
[2024-11-23 23:45:56,465 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:45:56,466 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions.
[2024-11-23 23:45:56,466 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)
[2024-11-23 23:45:56,466 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions.
[2024-11-23 23:45:56,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2024-11-23 23:45:56,466 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:45:56,467 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:45:56,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0
[2024-11-23 23:45:56,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:45:56,667 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] ===
[2024-11-23 23:45:56,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:45:56,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1563539501, now seen corresponding path program 1 times
[2024-11-23 23:45:56,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-23 23:45:56,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1518191152]
[2024-11-23 23:45:56,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:45:56,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:45:56,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 23:45:56,670 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 23:45:56,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2024-11-23 23:45:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:45:56,767 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjuncts are in the unsatisfiable core
[2024-11-23 23:45:56,769 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 23:45:56,877 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
[2024-11-23 23:45:56,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8
[2024-11-23 23:45:56,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:45:56,908 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-23 23:45:56,908 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-23 23:45:56,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518191152]
[2024-11-23 23:45:56,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518191152] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:45:56,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:45:56,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-23 23:45:56,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264761934]
[2024-11-23 23:45:56,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:45:56,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-23 23:45:56,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-23 23:45:56,910 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-23 23:45:56,910 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-23 23:45:56,910 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:57,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:45:57,185 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions.
[2024-11-23 23:45:57,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-23 23:45:57,186 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19
[2024-11-23 23:45:57,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:45:57,187 INFO L225 Difference]: With dead ends: 67
[2024-11-23 23:45:57,187 INFO L226 Difference]: Without dead ends: 67
[2024-11-23 23:45:57,187 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2024-11-23 23:45:57,187 INFO L435 NwaCegarLoop]: 50 mSDtfsCounter, 33 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-23 23:45:57,188 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 144 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-23 23:45:57,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states.
[2024-11-23 23:45:57,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 64.
[2024-11-23 23:45:57,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 46 states have (on average 1.434782608695652) internal successors, (66), 63 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:57,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions.
[2024-11-23 23:45:57,196 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 19
[2024-11-23 23:45:57,196 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:45:57,196 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions.
[2024-11-23 23:45:57,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:57,196 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions.
[2024-11-23 23:45:57,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2024-11-23 23:45:57,197 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:45:57,197 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:45:57,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0
[2024-11-23 23:45:57,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:45:57,398 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] ===
[2024-11-23 23:45:57,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:45:57,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1878845784, now seen corresponding path program 1 times
[2024-11-23 23:45:57,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-23 23:45:57,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1735499262]
[2024-11-23 23:45:57,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:45:57,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:45:57,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 23:45:57,401 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 23:45:57,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2024-11-23 23:45:57,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:45:57,514 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjuncts are in the unsatisfiable core
[2024-11-23 23:45:57,517 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 23:45:57,617 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
[2024-11-23 23:45:57,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:45:57,659 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-23 23:45:57,659 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-23 23:45:57,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735499262]
[2024-11-23 23:45:57,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735499262] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:45:57,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:45:57,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-23 23:45:57,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49894047]
[2024-11-23 23:45:57,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:45:57,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-23 23:45:57,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-23 23:45:57,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-23 23:45:57,660 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-23 23:45:57,660 INFO L87 Difference]: Start difference. First operand 64 states and 66 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 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)
[2024-11-23 23:45:57,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:45:57,874 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions.
[2024-11-23 23:45:57,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-23 23:45:57,875 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20
[2024-11-23 23:45:57,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:45:57,875 INFO L225 Difference]: With dead ends: 63
[2024-11-23 23:45:57,876 INFO L226 Difference]: Without dead ends: 63
[2024-11-23 23:45:57,876 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2024-11-23 23:45:57,876 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 27 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-23 23:45:57,877 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 129 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-23 23:45:57,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states.
[2024-11-23 23:45:57,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63.
[2024-11-23 23:45:57,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 46 states have (on average 1.4130434782608696) internal successors, (65), 62 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:57,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions.
[2024-11-23 23:45:57,880 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 20
[2024-11-23 23:45:57,881 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:45:57,881 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions.
[2024-11-23 23:45:57,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 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)
[2024-11-23 23:45:57,881 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions.
[2024-11-23 23:45:57,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2024-11-23 23:45:57,881 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:45:57,882 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:45:57,892 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0
[2024-11-23 23:45:58,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:45:58,082 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] ===
[2024-11-23 23:45:58,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:45:58,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1844448410, now seen corresponding path program 1 times
[2024-11-23 23:45:58,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-23 23:45:58,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [354536796]
[2024-11-23 23:45:58,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:45:58,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:45:58,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 23:45:58,085 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 23:45:58,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2024-11-23 23:45:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:45:58,194 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 18 conjuncts are in the unsatisfiable core
[2024-11-23 23:45:58,197 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 23:45:58,307 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
[2024-11-23 23:45:58,359 INFO L349 Elim1Store]: treesize reduction 36, result has 35.7 percent of original size
[2024-11-23 23:45:58,359 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 25 treesize of output 28
[2024-11-23 23:45:58,388 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 27 treesize of output 15
[2024-11-23 23:45:58,424 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
[2024-11-23 23:45:58,477 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 27 treesize of output 15
[2024-11-23 23:45:58,498 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:45:58,498 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-23 23:45:58,649 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 36 treesize of output 32
[2024-11-23 23:45:58,819 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:45:58,819 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-23 23:45:58,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354536796]
[2024-11-23 23:45:58,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354536796] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-23 23:45:58,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-23 23:45:58,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12
[2024-11-23 23:45:58,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161801636]
[2024-11-23 23:45:58,820 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-23 23:45:58,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2024-11-23 23:45:58,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-23 23:45:58,821 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2024-11-23 23:45:58,821 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156
[2024-11-23 23:45:58,821 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:59,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:45:59,599 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions.
[2024-11-23 23:45:59,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-11-23 23:45:59,600 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21
[2024-11-23 23:45:59,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:45:59,601 INFO L225 Difference]: With dead ends: 65
[2024-11-23 23:45:59,601 INFO L226 Difference]: Without dead ends: 65
[2024-11-23 23:45:59,601 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272
[2024-11-23 23:45:59,602 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 72 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2024-11-23 23:45:59,602 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 197 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2024-11-23 23:45:59,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states.
[2024-11-23 23:45:59,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 62.
[2024-11-23 23:45:59,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 46 states have (on average 1.391304347826087) internal successors, (64), 61 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)
[2024-11-23 23:45:59,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions.
[2024-11-23 23:45:59,607 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 21
[2024-11-23 23:45:59,607 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:45:59,607 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions.
[2024-11-23 23:45:59,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:45:59,607 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions.
[2024-11-23 23:45:59,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2024-11-23 23:45:59,608 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:45:59,608 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:45:59,626 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0
[2024-11-23 23:45:59,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:45:59,816 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] ===
[2024-11-23 23:45:59,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:45:59,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1844448411, now seen corresponding path program 1 times
[2024-11-23 23:45:59,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-23 23:45:59,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [77566260]
[2024-11-23 23:45:59,817 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:45:59,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:45:59,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 23:45:59,819 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 23:45:59,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2024-11-23 23:45:59,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:45:59,942 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 27 conjuncts are in the unsatisfiable core
[2024-11-23 23:45:59,945 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 23:46:00,105 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
[2024-11-23 23:46:00,113 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
[2024-11-23 23:46:00,199 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size
[2024-11-23 23:46:00,199 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 18 treesize of output 21
[2024-11-23 23:46:00,234 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size
[2024-11-23 23:46:00,235 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 17 treesize of output 17
[2024-11-23 23:46:00,278 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 25 treesize of output 13
[2024-11-23 23:46:00,329 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
[2024-11-23 23:46:00,341 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
[2024-11-23 23:46:00,410 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 25 treesize of output 13
[2024-11-23 23:46:00,420 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 7 treesize of output 3
[2024-11-23 23:46:00,449 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:46:00,449 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-23 23:46:01,034 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 66 treesize of output 62
[2024-11-23 23:46:01,040 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 102 treesize of output 94
[2024-11-23 23:46:01,377 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 40 treesize of output 32
[2024-11-23 23:46:02,706 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-23 23:46:02,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 303 treesize of output 401
[2024-11-23 23:46:03,752 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-23 23:46:03,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 254 treesize of output 518
[2024-11-23 23:46:20,537 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:46:20,537 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-23 23:46:20,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77566260]
[2024-11-23 23:46:20,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77566260] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-23 23:46:20,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-23 23:46:20,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15
[2024-11-23 23:46:20,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891364720]
[2024-11-23 23:46:20,538 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-23 23:46:20,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2024-11-23 23:46:20,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-23 23:46:20,539 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2024-11-23 23:46:20,539 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240
[2024-11-23 23:46:20,539 INFO L87 Difference]: Start difference. First operand 62 states and 64 transitions. Second operand has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 16 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)
[2024-11-23 23:46:22,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:46:22,562 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions.
[2024-11-23 23:46:22,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-11-23 23:46:22,563 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 16 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 21
[2024-11-23 23:46:22,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:46:22,564 INFO L225 Difference]: With dead ends: 64
[2024-11-23 23:46:22,564 INFO L226 Difference]: Without dead ends: 64
[2024-11-23 23:46:22,564 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380
[2024-11-23 23:46:22,565 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 43 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time
[2024-11-23 23:46:22,565 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 276 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time]
[2024-11-23 23:46:22,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states.
[2024-11-23 23:46:22,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61.
[2024-11-23 23:46:22,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 46 states have (on average 1.3695652173913044) internal successors, (63), 60 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:46:22,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions.
[2024-11-23 23:46:22,567 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 21
[2024-11-23 23:46:22,567 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:46:22,567 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions.
[2024-11-23 23:46:22,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 16 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)
[2024-11-23 23:46:22,567 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions.
[2024-11-23 23:46:22,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2024-11-23 23:46:22,568 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:46:22,568 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:46:22,575 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0
[2024-11-23 23:46:22,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:46:22,768 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] ===
[2024-11-23 23:46:22,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:46:22,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1885322937, now seen corresponding path program 1 times
[2024-11-23 23:46:22,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-23 23:46:22,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1589426256]
[2024-11-23 23:46:22,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:46:22,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:46:22,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 23:46:22,774 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 23:46:22,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2024-11-23 23:46:22,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:46:22,898 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 11 conjuncts are in the unsatisfiable core
[2024-11-23 23:46:22,901 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 23:46:23,034 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
[2024-11-23 23:46:23,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11
[2024-11-23 23:46:23,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:46:23,129 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-23 23:46:23,129 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-23 23:46:23,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589426256]
[2024-11-23 23:46:23,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589426256] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:46:23,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:46:23,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-23 23:46:23,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402688046]
[2024-11-23 23:46:23,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:46:23,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-23 23:46:23,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-23 23:46:23,131 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-23 23:46:23,131 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-23 23:46:23,131 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:46:23,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:46:23,447 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions.
[2024-11-23 23:46:23,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-23 23:46:23,448 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21
[2024-11-23 23:46:23,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:46:23,448 INFO L225 Difference]: With dead ends: 63
[2024-11-23 23:46:23,448 INFO L226 Difference]: Without dead ends: 63
[2024-11-23 23:46:23,449 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2024-11-23 23:46:23,449 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 23 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-23 23:46:23,449 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 112 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-23 23:46:23,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states.
[2024-11-23 23:46:23,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 60.
[2024-11-23 23:46:23,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 46 states have (on average 1.3478260869565217) internal successors, (62), 59 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:46:23,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions.
[2024-11-23 23:46:23,452 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 21
[2024-11-23 23:46:23,453 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:46:23,453 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions.
[2024-11-23 23:46:23,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:46:23,453 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions.
[2024-11-23 23:46:23,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2024-11-23 23:46:23,454 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:46:23,454 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:46:23,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0
[2024-11-23 23:46:23,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:46:23,654 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] ===
[2024-11-23 23:46:23,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:46:23,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1684530998, now seen corresponding path program 1 times
[2024-11-23 23:46:23,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-23 23:46:23,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1767877742]
[2024-11-23 23:46:23,655 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:46:23,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:46:23,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 23:46:23,658 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 23:46:23,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2024-11-23 23:46:23,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:46:23,752 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-11-23 23:46:23,753 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 23:46:23,775 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 19 treesize of output 11
[2024-11-23 23:46:23,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:46:23,787 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-23 23:46:23,787 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-23 23:46:23,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767877742]
[2024-11-23 23:46:23,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767877742] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:46:23,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:46:23,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-23 23:46:23,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778707347]
[2024-11-23 23:46:23,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:46:23,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-23 23:46:23,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-23 23:46:23,788 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-23 23:46:23,788 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-23 23:46:23,788 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 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)
[2024-11-23 23:46:23,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:46:23,993 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions.
[2024-11-23 23:46:23,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-23 23:46:23,994 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 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 22
[2024-11-23 23:46:23,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:46:23,994 INFO L225 Difference]: With dead ends: 59
[2024-11-23 23:46:23,994 INFO L226 Difference]: Without dead ends: 59
[2024-11-23 23:46:23,995 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-23 23:46:23,995 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 3 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-23 23:46:23,995 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 124 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-23 23:46:23,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states.
[2024-11-23 23:46:23,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59.
[2024-11-23 23:46:23,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 46 states have (on average 1.326086956521739) internal successors, (61), 58 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)
[2024-11-23 23:46:23,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions.
[2024-11-23 23:46:23,998 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 22
[2024-11-23 23:46:23,999 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:46:23,999 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions.
[2024-11-23 23:46:23,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 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)
[2024-11-23 23:46:23,999 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions.
[2024-11-23 23:46:23,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2024-11-23 23:46:23,999 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:46:24,000 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:46:24,011 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0
[2024-11-23 23:46:24,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:46:24,200 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] ===
[2024-11-23 23:46:24,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:46:24,201 INFO L85 PathProgramCache]: Analyzing trace with hash -680853284, now seen corresponding path program 1 times
[2024-11-23 23:46:24,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-23 23:46:24,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [228275766]
[2024-11-23 23:46:24,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:46:24,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:46:24,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 23:46:24,203 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 23:46:24,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2024-11-23 23:46:24,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:46:24,310 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 13 conjuncts are in the unsatisfiable core
[2024-11-23 23:46:24,312 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 23:46:24,327 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
[2024-11-23 23:46:24,352 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size
[2024-11-23 23:46:24,352 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
[2024-11-23 23:46:24,445 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
[2024-11-23 23:46:24,504 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
[2024-11-23 23:46:24,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13
[2024-11-23 23:46:24,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:46:24,535 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-23 23:46:24,535 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-23 23:46:24,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228275766]
[2024-11-23 23:46:24,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228275766] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:46:24,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:46:24,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-11-23 23:46:24,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690996917]
[2024-11-23 23:46:24,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:46:24,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-23 23:46:24,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-23 23:46:24,536 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-23 23:46:24,537 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2024-11-23 23:46:24,537 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:46:24,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:46:24,796 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions.
[2024-11-23 23:46:24,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-23 23:46:24,797 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23
[2024-11-23 23:46:24,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:46:24,798 INFO L225 Difference]: With dead ends: 58
[2024-11-23 23:46:24,798 INFO L226 Difference]: Without dead ends: 58
[2024-11-23 23:46:24,798 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72
[2024-11-23 23:46:24,798 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 54 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-23 23:46:24,798 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 74 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-23 23:46:24,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states.
[2024-11-23 23:46:24,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58.
[2024-11-23 23:46:24,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 46 states have (on average 1.3043478260869565) internal successors, (60), 57 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:46:24,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions.
[2024-11-23 23:46:24,801 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 23
[2024-11-23 23:46:24,801 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:46:24,802 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions.
[2024-11-23 23:46:24,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:46:24,802 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions.
[2024-11-23 23:46:24,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2024-11-23 23:46:24,802 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:46:24,802 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:46:24,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0
[2024-11-23 23:46:25,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:46:25,006 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] ===
[2024-11-23 23:46:25,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:46:25,006 INFO L85 PathProgramCache]: Analyzing trace with hash -680853283, now seen corresponding path program 1 times
[2024-11-23 23:46:25,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-23 23:46:25,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1588282697]
[2024-11-23 23:46:25,007 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:46:25,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:46:25,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 23:46:25,009 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 23:46:25,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2024-11-23 23:46:25,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:46:25,107 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-23 23:46:25,108 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 23:46:25,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:46:25,188 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-23 23:46:25,188 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-23 23:46:25,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588282697]
[2024-11-23 23:46:25,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588282697] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:46:25,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:46:25,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-23 23:46:25,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721024833]
[2024-11-23 23:46:25,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:46:25,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-23 23:46:25,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-23 23:46:25,189 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-23 23:46:25,189 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-23 23:46:25,189 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:46:25,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:46:25,331 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions.
[2024-11-23 23:46:25,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-23 23:46:25,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23
[2024-11-23 23:46:25,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:46:25,333 INFO L225 Difference]: With dead ends: 53
[2024-11-23 23:46:25,333 INFO L226 Difference]: Without dead ends: 53
[2024-11-23 23:46:25,333 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-23 23:46:25,333 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 19 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-23 23:46:25,334 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 44 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-23 23:46:25,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states.
[2024-11-23 23:46:25,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53.
[2024-11-23 23:46:25,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 52 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:46:25,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions.
[2024-11-23 23:46:25,337 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 23
[2024-11-23 23:46:25,337 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:46:25,337 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions.
[2024-11-23 23:46:25,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:46:25,337 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions.
[2024-11-23 23:46:25,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2024-11-23 23:46:25,337 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:46:25,338 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:46:25,348 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0
[2024-11-23 23:46:25,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:46:25,539 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] ===
[2024-11-23 23:46:25,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:46:25,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1923861641, now seen corresponding path program 1 times
[2024-11-23 23:46:25,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-23 23:46:25,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2142406089]
[2024-11-23 23:46:25,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:46:25,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:46:25,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 23:46:25,545 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 23:46:25,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2024-11-23 23:46:25,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 23:46:25,673 INFO L256 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 36 conjuncts are in the unsatisfiable core
[2024-11-23 23:46:25,676 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 23:46:25,755 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7
[2024-11-23 23:46:25,810 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
[2024-11-23 23:46:25,826 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 11
[2024-11-23 23:46:25,942 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
[2024-11-23 23:46:25,959 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 23 treesize of output 11
[2024-11-23 23:46:26,020 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 23 treesize of output 3
[2024-11-23 23:46:26,125 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-23 23:46:26,126 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 27 treesize of output 19
[2024-11-23 23:46:26,142 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-23 23:46:26,142 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 27 treesize of output 19
[2024-11-23 23:46:26,336 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
[2024-11-23 23:46:26,341 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 19 treesize of output 11
[2024-11-23 23:46:26,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 23:46:26,383 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-23 23:46:26,383 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-23 23:46:26,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142406089]
[2024-11-23 23:46:26,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142406089] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 23:46:26,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 23:46:26,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14
[2024-11-23 23:46:26,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120380737]
[2024-11-23 23:46:26,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 23:46:26,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2024-11-23 23:46:26,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-23 23:46:26,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2024-11-23 23:46:26,385 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182
[2024-11-23 23:46:26,385 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:46:27,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 23:46:27,223 INFO L93 Difference]: Finished difference Result 75 states and 78 transitions.
[2024-11-23 23:46:27,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2024-11-23 23:46:27,224 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28
[2024-11-23 23:46:27,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 23:46:27,225 INFO L225 Difference]: With dead ends: 75
[2024-11-23 23:46:27,225 INFO L226 Difference]: Without dead ends: 75
[2024-11-23 23:46:27,225 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420
[2024-11-23 23:46:27,226 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 26 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2024-11-23 23:46:27,226 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 307 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2024-11-23 23:46:27,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states.
[2024-11-23 23:46:27,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 71.
[2024-11-23 23:46:27,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 64 states have (on average 1.15625) internal successors, (74), 70 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:46:27,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions.
[2024-11-23 23:46:27,229 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 28
[2024-11-23 23:46:27,229 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-23 23:46:27,229 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 74 transitions.
[2024-11-23 23:46:27,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 23:46:27,230 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 74 transitions.
[2024-11-23 23:46:27,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2024-11-23 23:46:27,230 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:46:27,230 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:46:27,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0
[2024-11-23 23:46:27,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:46:27,434 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] ===
[2024-11-23 23:46:27,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:46:27,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1923858985, now seen corresponding path program 1 times
[2024-11-23 23:46:27,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-23 23:46:27,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1797380384]
[2024-11-23 23:46:27,435 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:46:27,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:46:27,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 23:46:27,437 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 23:46:27,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2024-11-23 23:46:27,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-11-23 23:46:27,866 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2024-11-23 23:46:28,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-11-23 23:46:28,345 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace
[2024-11-23 23:46:28,345 INFO L340 BasicCegarLoop]: Counterexample is feasible
[2024-11-23 23:46:28,346 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK (40 of 41 remaining)
[2024-11-23 23:46:28,350 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 41 remaining)
[2024-11-23 23:46:28,351 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 41 remaining)
[2024-11-23 23:46:28,351 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 41 remaining)
[2024-11-23 23:46:28,351 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 41 remaining)
[2024-11-23 23:46:28,351 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 41 remaining)
[2024-11-23 23:46:28,351 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 41 remaining)
[2024-11-23 23:46:28,352 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 41 remaining)
[2024-11-23 23:46:28,352 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 41 remaining)
[2024-11-23 23:46:28,352 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 41 remaining)
[2024-11-23 23:46:28,352 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 41 remaining)
[2024-11-23 23:46:28,352 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 41 remaining)
[2024-11-23 23:46:28,352 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 41 remaining)
[2024-11-23 23:46:28,355 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 41 remaining)
[2024-11-23 23:46:28,355 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 41 remaining)
[2024-11-23 23:46:28,356 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 41 remaining)
[2024-11-23 23:46:28,356 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 41 remaining)
[2024-11-23 23:46:28,356 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 41 remaining)
[2024-11-23 23:46:28,356 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 41 remaining)
[2024-11-23 23:46:28,356 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 41 remaining)
[2024-11-23 23:46:28,356 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 41 remaining)
[2024-11-23 23:46:28,356 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 41 remaining)
[2024-11-23 23:46:28,356 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 41 remaining)
[2024-11-23 23:46:28,357 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE (17 of 41 remaining)
[2024-11-23 23:46:28,357 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE (16 of 41 remaining)
[2024-11-23 23:46:28,357 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE (15 of 41 remaining)
[2024-11-23 23:46:28,357 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 41 remaining)
[2024-11-23 23:46:28,357 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 41 remaining)
[2024-11-23 23:46:28,357 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 41 remaining)
[2024-11-23 23:46:28,357 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 41 remaining)
[2024-11-23 23:46:28,357 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 41 remaining)
[2024-11-23 23:46:28,357 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 41 remaining)
[2024-11-23 23:46:28,357 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 41 remaining)
[2024-11-23 23:46:28,357 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 41 remaining)
[2024-11-23 23:46:28,357 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 41 remaining)
[2024-11-23 23:46:28,357 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 41 remaining)
[2024-11-23 23:46:28,358 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE (4 of 41 remaining)
[2024-11-23 23:46:28,358 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE (3 of 41 remaining)
[2024-11-23 23:46:28,358 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE (2 of 41 remaining)
[2024-11-23 23:46:28,358 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 41 remaining)
[2024-11-23 23:46:28,358 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 41 remaining)
[2024-11-23 23:46:28,373 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0
[2024-11-23 23:46:28,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:46:28,561 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:46:28,582 INFO L170 ceAbstractionStarter]: Computing trace abstraction results
[2024-11-23 23:46:28,585 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 11:46:28 BoogieIcfgContainer
[2024-11-23 23:46:28,585 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-11-23 23:46:28,586 INFO L112 PluginConnector]: ------------------------Witness Printer----------------------------
[2024-11-23 23:46:28,586 INFO L270 PluginConnector]: Initializing Witness Printer...
[2024-11-23 23:46:28,586 INFO L274 PluginConnector]: Witness Printer initialized
[2024-11-23 23:46:28,587 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:45:50" (3/4) ...
[2024-11-23 23:46:28,589 INFO L149 WitnessPrinter]: No result that supports witness generation found
[2024-11-23 23:46:28,590 INFO L131 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2024-11-23 23:46:28,591 INFO L158 Benchmark]: Toolchain (without parser) took 39943.14ms. Allocated memory was 83.9MB in the beginning and 125.8MB in the end (delta: 41.9MB). Free memory was 59.3MB in the beginning and 82.4MB in the end (delta: -23.1MB). Peak memory consumption was 16.3MB. Max. memory is 16.1GB.
[2024-11-23 23:46:28,591 INFO L158 Benchmark]: CDTParser took 0.53ms. Allocated memory is still 83.9MB. Free memory is still 64.4MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-11-23 23:46:28,592 INFO L158 Benchmark]: CACSL2BoogieTranslator took 574.32ms. Allocated memory is still 83.9MB. Free memory was 59.0MB in the beginning and 41.1MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
[2024-11-23 23:46:28,592 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.80ms. Allocated memory is still 83.9MB. Free memory was 41.1MB in the beginning and 39.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-23 23:46:28,592 INFO L158 Benchmark]: Boogie Preprocessor took 89.58ms. Allocated memory is still 83.9MB. Free memory was 39.3MB in the beginning and 37.1MB in the end (delta: 2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-11-23 23:46:28,592 INFO L158 Benchmark]: RCFGBuilder took 783.03ms. Allocated memory is still 83.9MB. Free memory was 37.1MB in the beginning and 50.4MB in the end (delta: -13.3MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB.
[2024-11-23 23:46:28,593 INFO L158 Benchmark]: TraceAbstraction took 38417.21ms. Allocated memory was 83.9MB in the beginning and 125.8MB in the end (delta: 41.9MB). Free memory was 49.8MB in the beginning and 82.4MB in the end (delta: -32.6MB). Peak memory consumption was 2.9MB. Max. memory is 16.1GB.
[2024-11-23 23:46:28,593 INFO L158 Benchmark]: Witness Printer took 4.31ms. Allocated memory is still 125.8MB. Free memory was 82.4MB in the beginning and 82.4MB in the end (delta: 15.7kB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-23 23:46:28,594 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.53ms. Allocated memory is still 83.9MB. Free memory is still 64.4MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 574.32ms. Allocated memory is still 83.9MB. Free memory was 59.0MB in the beginning and 41.1MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 66.80ms. Allocated memory is still 83.9MB. Free memory was 41.1MB in the beginning and 39.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB.
* Boogie Preprocessor took 89.58ms. Allocated memory is still 83.9MB. Free memory was 39.3MB in the beginning and 37.1MB in the end (delta: 2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* RCFGBuilder took 783.03ms. Allocated memory is still 83.9MB. Free memory was 37.1MB in the beginning and 50.4MB in the end (delta: -13.3MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB.
* TraceAbstraction took 38417.21ms. Allocated memory was 83.9MB in the beginning and 125.8MB in the end (delta: 41.9MB). Free memory was 49.8MB in the beginning and 82.4MB in the end (delta: -32.6MB). Peak memory consumption was 2.9MB. Max. memory is 16.1GB.
* Witness Printer took 4.31ms. Allocated memory is still 125.8MB. Free memory was 82.4MB in the beginning and 82.4MB in the end (delta: 15.7kB). There was no memory consumed. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: ErrorAutomatonStatistics
NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
- UnprovableResult [Line: 537]: Unable to prove that all allocated memory was freed
Unable to prove that all allocated memory was freed
Reason: overapproximation of memtrack at line 537.
Possible FailurePath:
[L539] struct item *list = ((void *)0);
[L539] struct item *list = ((void *)0);
[L541] CALL append(&list)
[L530] struct item *item = malloc(sizeof *item);
[L531] EXPR \read(**plist)
[L531] item->next = *plist
[L532] EXPR item->next
[L532-L534] EXPR (item->next)
? item->next->data
: malloc(sizeof *item)
[L532-L534] EXPR (item->next)
? item->next->data
: malloc(sizeof *item)
VAL [item={3:0}, plist={1049606:0}]
[L532-L534] item->data = (item->next)
? item->next->data
: malloc(sizeof *item)
[L535] *plist = item
[L541] RET append(&list)
[L542] COND FALSE !(__VERIFIER_nondet_int())
[L543] \read(*list)
[L543] COND TRUE \read(*list)
[L544] EXPR \read(*list)
[L544] EXPR list->next
[L544] struct item *next = list->next;
[L545] EXPR \read(*list)
[L545] free(list)
VAL [list={1049606:0}, next={0:0}]
[L545] free(list)
VAL [list={1049606:0}, next={0:0}]
[L545] free(list)
[L546] list = next
[L548] \read(*list)
[L548] COND FALSE !(\read(*list))
[L553] return 0;
[L539] struct item *list = ((void *)0);
[L553] return 0;
VAL [\result=0]
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 545]: Unable to prove that free always succeeds
Unable to prove that free always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 545]: Unable to prove that free always succeeds
Unable to prove that free always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 545]: Unable to prove that free always succeeds
Unable to prove that free always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 550]: Unable to prove that free always succeeds
Unable to prove that free always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 550]: Unable to prove that free always succeeds
Unable to prove that free always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 550]: Unable to prove that free always succeeds
Unable to prove that free always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 1 procedures, 83 locations, 41 error locations. Started 1 CEGAR loops. OverallTime: 38.3s, OverallIterations: 18, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 7.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 664 SdHoareTripleChecker+Valid, 6.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 664 mSDsluCounter, 2346 SdHoareTripleChecker+Invalid, 5.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1614 mSDsCounter, 72 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1977 IncrementalHoareTripleChecker+Invalid, 2049 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 72 mSolverCounterUnsat, 732 mSDtfsCounter, 1977 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 331 GetRequests, 215 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83occurred in iteration=0, InterpolantAutomatonStates: 99, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 17 MinimizatonAttempts, 59 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 24.0s InterpolantComputationTime, 299 NumberOfCodeBlocks, 299 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 294 ConstructedInterpolants, 7 QuantifiedInterpolants, 3710 SizeOfPredicates, 73 NumberOfNonLiveVariables, 1774 ConjunctsInSsa, 205 ConjunctsInUnsatCore, 19 InterpolantComputations, 15 PerfectInterpolantSequences, 4/24 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available
RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces
[2024-11-23 23:46:28,624 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aac710e-ed07-4e5a-9c9b-61a7a59098e5/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Writing output log to file Ultimate.log
Result:
UNKNOWN: Overapproximated counterexample