./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-simple/dll2c_remove_all_reverse.i --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for memory safety (deref-memtrack)
Using default analysis
Version a0165632
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/dll2c_remove_all_reverse.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a81d76a671fec08918102c7898e8919d02b265d05707efa1508363dab4714d44
--- Real Ultimate output ---
This is Ultimate 0.2.5-dev-a016563
[2024-11-08 16:06:40,193 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-11-08 16:06:40,289 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf
[2024-11-08 16:06:40,296 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-11-08 16:06:40,297 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-08 16:06:40,329 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-08 16:06:40,330 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-08 16:06:40,330 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-08 16:06:40,331 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-08 16:06:40,333 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-11-08 16:06:40,334 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-08 16:06:40,334 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-08 16:06:40,336 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-08 16:06:40,336 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-11-08 16:06:40,340 INFO L153 SettingsManager]: * Use SBE=true
[2024-11-08 16:06:40,341 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-08 16:06:40,341 INFO L153 SettingsManager]: * sizeof long=4
[2024-11-08 16:06:40,341 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-11-08 16:06:40,342 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-11-08 16:06:40,342 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-11-08 16:06:40,342 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true
[2024-11-08 16:06:40,343 INFO L153 SettingsManager]: * Bitprecise bitfields=true
[2024-11-08 16:06:40,343 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true
[2024-11-08 16:06:40,343 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-08 16:06:40,344 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2024-11-08 16:06:40,344 INFO L153 SettingsManager]: * Allow undefined functions=false
[2024-11-08 16:06:40,344 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false
[2024-11-08 16:06:40,345 INFO L153 SettingsManager]: * sizeof long double=12
[2024-11-08 16:06:40,345 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-11-08 16:06:40,345 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-08 16:06:40,345 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-08 16:06:40,348 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-08 16:06:40,348 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-08 16:06:40,349 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-08 16:06:40,349 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-08 16:06:40,349 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-11-08 16:06:40,349 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-11-08 16:06:40,350 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-08 16:06:40,350 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-08 16:06:40,350 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-08 16:06:40,350 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-11-08 16:06:40,351 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-08 16:06:40,351 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a81d76a671fec08918102c7898e8919d02b265d05707efa1508363dab4714d44
[2024-11-08 16:06:40,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-08 16:06:40,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-08 16:06:40,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-08 16:06:40,687 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-11-08 16:06:40,688 INFO L274 PluginConnector]: CDTParser initialized
[2024-11-08 16:06:40,689 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/list-simple/dll2c_remove_all_reverse.i
Unable to find full path for "g++"
[2024-11-08 16:06:42,802 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2024-11-08 16:06:43,086 INFO L384 CDTParser]: Found 1 translation units.
[2024-11-08 16:06:43,087 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/sv-benchmarks/c/list-simple/dll2c_remove_all_reverse.i
[2024-11-08 16:06:43,101 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/data/bcb3a6017/2820a0e300074d18be629d92eb4cc5bd/FLAG6a0da8e98
[2024-11-08 16:06:43,115 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/data/bcb3a6017/2820a0e300074d18be629d92eb4cc5bd
[2024-11-08 16:06:43,117 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-08 16:06:43,119 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-08 16:06:43,120 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-08 16:06:43,120 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-08 16:06:43,127 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-08 16:06:43,129 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:06:43" (1/1) ...
[2024-11-08 16:06:43,130 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60affbbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:06:43, skipping insertion in model container
[2024-11-08 16:06:43,130 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:06:43" (1/1) ...
[2024-11-08 16:06:43,184 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-11-08 16:06:43,571 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-08 16:06:43,583 INFO L200 MainTranslator]: Completed pre-run
[2024-11-08 16:06:43,639 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-08 16:06:43,681 INFO L204 MainTranslator]: Completed translation
[2024-11-08 16:06:43,681 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:06:43 WrapperNode
[2024-11-08 16:06:43,682 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-08 16:06:43,683 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-08 16:06:43,683 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-08 16:06:43,684 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-08 16:06:43,693 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:06:43" (1/1) ...
[2024-11-08 16:06:43,717 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:06:43" (1/1) ...
[2024-11-08 16:06:43,751 INFO L138 Inliner]: procedures = 126, calls = 38, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 112
[2024-11-08 16:06:43,751 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-08 16:06:43,754 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-08 16:06:43,754 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-08 16:06:43,755 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-11-08 16:06:43,767 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:06:43" (1/1) ...
[2024-11-08 16:06:43,767 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:06:43" (1/1) ...
[2024-11-08 16:06:43,771 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:06:43" (1/1) ...
[2024-11-08 16:06:43,791 INFO L175 MemorySlicer]: Split 21 memory accesses to 3 slices as follows [2, 11, 8]. 52 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 0, 1]. The 10 writes are split as follows [0, 9, 1].
[2024-11-08 16:06:43,792 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:06:43" (1/1) ...
[2024-11-08 16:06:43,792 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:06:43" (1/1) ...
[2024-11-08 16:06:43,810 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:06:43" (1/1) ...
[2024-11-08 16:06:43,816 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:06:43" (1/1) ...
[2024-11-08 16:06:43,823 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:06:43" (1/1) ...
[2024-11-08 16:06:43,825 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:06:43" (1/1) ...
[2024-11-08 16:06:43,830 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-08 16:06:43,833 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-08 16:06:43,835 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-11-08 16:06:43,835 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-11-08 16:06:43,836 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:06:43" (1/1) ...
[2024-11-08 16:06:43,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-08 16:06:43,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:06:43,883 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-08 16:06:43,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-08 16:06:43,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0
[2024-11-08 16:06:43,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1
[2024-11-08 16:06:43,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2
[2024-11-08 16:06:43,922 INFO L130 BoogieDeclarations]: Found specification of procedure node_create
[2024-11-08 16:06:43,922 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create
[2024-11-08 16:06:43,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2024-11-08 16:06:43,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-08 16:06:43,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2024-11-08 16:06:43,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0
[2024-11-08 16:06:43,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1
[2024-11-08 16:06:43,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2
[2024-11-08 16:06:43,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0
[2024-11-08 16:06:43,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1
[2024-11-08 16:06:43,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2
[2024-11-08 16:06:43,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2024-11-08 16:06:43,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0
[2024-11-08 16:06:43,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1
[2024-11-08 16:06:43,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2
[2024-11-08 16:06:43,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-08 16:06:43,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1
[2024-11-08 16:06:43,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2
[2024-11-08 16:06:43,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-08 16:06:43,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-08 16:06:44,061 INFO L238 CfgBuilder]: Building ICFG
[2024-11-08 16:06:44,063 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-08 16:06:44,474 INFO L? ?]: Removed 110 outVars from TransFormulas that were not future-live.
[2024-11-08 16:06:44,475 INFO L287 CfgBuilder]: Performing block encoding
[2024-11-08 16:06:44,491 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-08 16:06:44,491 INFO L316 CfgBuilder]: Removed 0 assume(true) statements.
[2024-11-08 16:06:44,492 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:06:44 BoogieIcfgContainer
[2024-11-08 16:06:44,492 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-08 16:06:44,501 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-08 16:06:44,501 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-11-08 16:06:44,505 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-11-08 16:06:44,506 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:06:43" (1/3) ...
[2024-11-08 16:06:44,507 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ded35a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:06:44, skipping insertion in model container
[2024-11-08 16:06:44,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:06:43" (2/3) ...
[2024-11-08 16:06:44,508 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ded35a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:06:44, skipping insertion in model container
[2024-11-08 16:06:44,508 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:06:44" (3/3) ...
[2024-11-08 16:06:44,509 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2c_remove_all_reverse.i
[2024-11-08 16:06:44,532 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-08 16:06:44,532 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations.
[2024-11-08 16:06:44,585 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-08 16:06:44,590 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;@ae24f09, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-08 16:06:44,591 INFO L334 AbstractCegarLoop]: Starting to check reachability of 44 error locations.
[2024-11-08 16:06:44,596 INFO L276 IsEmpty]: Start isEmpty. Operand has 102 states, 54 states have (on average 1.9814814814814814) internal successors, (107), 98 states have internal predecessors, (107), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 16:06:44,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2024-11-08 16:06:44,604 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:06:44,605 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2024-11-08 16:06:44,606 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting node_createErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:06:44,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:06:44,613 INFO L85 PathProgramCache]: Analyzing trace with hash 893917874, now seen corresponding path program 1 times
[2024-11-08 16:06:44,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:06:44,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970967870]
[2024-11-08 16:06:44,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:06:44,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:06:44,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:06:44,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 16:06:44,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:06:44,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970967870]
[2024-11-08 16:06:44,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970967870] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:06:44,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:06:44,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-08 16:06:44,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976671367]
[2024-11-08 16:06:44,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:06:44,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-08 16:06:44,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:06:44,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-08 16:06:44,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-08 16:06:45,001 INFO L87 Difference]: Start difference. First operand has 102 states, 54 states have (on average 1.9814814814814814) internal successors, (107), 98 states have internal predecessors, (107), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 16:06:45,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:06:45,167 INFO L93 Difference]: Finished difference Result 98 states and 105 transitions.
[2024-11-08 16:06:45,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-08 16:06:45,169 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6
[2024-11-08 16:06:45,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:06:45,178 INFO L225 Difference]: With dead ends: 98
[2024-11-08 16:06:45,179 INFO L226 Difference]: Without dead ends: 95
[2024-11-08 16:06:45,180 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-08 16:06:45,184 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 3 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 16:06:45,186 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 152 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 16:06:45,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states.
[2024-11-08 16:06:45,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95.
[2024-11-08 16:06:45,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 51 states have (on average 1.9019607843137254) internal successors, (97), 91 states have internal predecessors, (97), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 16:06:45,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 101 transitions.
[2024-11-08 16:06:45,224 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 101 transitions. Word has length 6
[2024-11-08 16:06:45,224 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:06:45,224 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 101 transitions.
[2024-11-08 16:06:45,224 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 16:06:45,225 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 101 transitions.
[2024-11-08 16:06:45,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2024-11-08 16:06:45,225 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:06:45,225 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2024-11-08 16:06:45,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-08 16:06:45,226 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting node_createErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:06:45,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:06:45,227 INFO L85 PathProgramCache]: Analyzing trace with hash 893917875, now seen corresponding path program 1 times
[2024-11-08 16:06:45,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:06:45,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392742752]
[2024-11-08 16:06:45,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:06:45,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:06:45,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:06:45,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 16:06:45,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:06:45,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392742752]
[2024-11-08 16:06:45,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392742752] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:06:45,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:06:45,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-08 16:06:45,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154065265]
[2024-11-08 16:06:45,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:06:45,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-08 16:06:45,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:06:45,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-08 16:06:45,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-08 16:06:45,420 INFO L87 Difference]: Start difference. First operand 95 states and 101 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 16:06:45,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:06:45,537 INFO L93 Difference]: Finished difference Result 92 states and 98 transitions.
[2024-11-08 16:06:45,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-08 16:06:45,538 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6
[2024-11-08 16:06:45,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:06:45,539 INFO L225 Difference]: With dead ends: 92
[2024-11-08 16:06:45,540 INFO L226 Difference]: Without dead ends: 92
[2024-11-08 16:06:45,540 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-08 16:06:45,541 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 3 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 16:06:45,542 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 153 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 16:06:45,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states.
[2024-11-08 16:06:45,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92.
[2024-11-08 16:06:45,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 51 states have (on average 1.8431372549019607) internal successors, (94), 88 states have internal predecessors, (94), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 16:06:45,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 98 transitions.
[2024-11-08 16:06:45,551 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 98 transitions. Word has length 6
[2024-11-08 16:06:45,551 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:06:45,551 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 98 transitions.
[2024-11-08 16:06:45,552 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 16:06:45,552 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 98 transitions.
[2024-11-08 16:06:45,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2024-11-08 16:06:45,552 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:06:45,553 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:06:45,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-11-08 16:06:45,553 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:06:45,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:06:45,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1092471078, now seen corresponding path program 1 times
[2024-11-08 16:06:45,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:06:45,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634996293]
[2024-11-08 16:06:45,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:06:45,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:06:45,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:06:45,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-11-08 16:06:45,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:06:45,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 16:06:45,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:06:45,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634996293]
[2024-11-08 16:06:45,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634996293] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:06:45,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:06:45,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-08 16:06:45,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120820760]
[2024-11-08 16:06:45,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:06:45,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 16:06:45,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:06:45,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 16:06:45,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 16:06:45,744 INFO L87 Difference]: Start difference. First operand 92 states and 98 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2024-11-08 16:06:45,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:06:45,886 INFO L93 Difference]: Finished difference Result 104 states and 112 transitions.
[2024-11-08 16:06:45,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-08 16:06:45,887 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14
[2024-11-08 16:06:45,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:06:45,888 INFO L225 Difference]: With dead ends: 104
[2024-11-08 16:06:45,889 INFO L226 Difference]: Without dead ends: 104
[2024-11-08 16:06:45,889 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 16:06:45,890 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 11 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 16:06:45,891 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 218 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 16:06:45,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states.
[2024-11-08 16:06:45,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 94.
[2024-11-08 16:06:45,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 53 states have (on average 1.8113207547169812) internal successors, (96), 90 states have internal predecessors, (96), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 16:06:45,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 100 transitions.
[2024-11-08 16:06:45,901 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 100 transitions. Word has length 14
[2024-11-08 16:06:45,901 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:06:45,901 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 100 transitions.
[2024-11-08 16:06:45,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2024-11-08 16:06:45,902 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 100 transitions.
[2024-11-08 16:06:45,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2024-11-08 16:06:45,903 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:06:45,903 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:06:45,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-11-08 16:06:45,904 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:06:45,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:06:45,904 INFO L85 PathProgramCache]: Analyzing trace with hash -24083230, now seen corresponding path program 1 times
[2024-11-08 16:06:45,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:06:45,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228932554]
[2024-11-08 16:06:45,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:06:45,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:06:45,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:06:46,113 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-11-08 16:06:46,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:06:46,144 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2024-11-08 16:06:46,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:06:46,234 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2024-11-08 16:06:46,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:06:46,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228932554]
[2024-11-08 16:06:46,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228932554] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:06:46,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:06:46,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-11-08 16:06:46,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594502654]
[2024-11-08 16:06:46,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:06:46,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-08 16:06:46,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:06:46,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-08 16:06:46,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-08 16:06:46,237 INFO L87 Difference]: Start difference. First operand 94 states and 100 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-08 16:06:46,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:06:46,515 INFO L93 Difference]: Finished difference Result 93 states and 99 transitions.
[2024-11-08 16:06:46,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-08 16:06:46,518 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25
[2024-11-08 16:06:46,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:06:46,519 INFO L225 Difference]: With dead ends: 93
[2024-11-08 16:06:46,520 INFO L226 Difference]: Without dead ends: 93
[2024-11-08 16:06:46,520 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-08 16:06:46,521 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 7 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-08 16:06:46,524 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 308 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-08 16:06:46,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states.
[2024-11-08 16:06:46,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93.
[2024-11-08 16:06:46,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 53 states have (on average 1.7924528301886793) internal successors, (95), 89 states have internal predecessors, (95), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 16:06:46,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 99 transitions.
[2024-11-08 16:06:46,537 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 99 transitions. Word has length 25
[2024-11-08 16:06:46,537 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:06:46,538 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 99 transitions.
[2024-11-08 16:06:46,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-08 16:06:46,540 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 99 transitions.
[2024-11-08 16:06:46,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2024-11-08 16:06:46,541 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:06:46,541 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:06:46,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2024-11-08 16:06:46,541 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:06:46,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:06:46,542 INFO L85 PathProgramCache]: Analyzing trace with hash -24083229, now seen corresponding path program 1 times
[2024-11-08 16:06:46,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:06:46,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571319610]
[2024-11-08 16:06:46,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:06:46,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:06:46,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:06:46,861 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-11-08 16:06:46,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:06:46,881 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2024-11-08 16:06:46,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:06:47,094 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 16:06:47,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:06:47,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571319610]
[2024-11-08 16:06:47,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571319610] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:06:47,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:06:47,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-11-08 16:06:47,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024429197]
[2024-11-08 16:06:47,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:06:47,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-08 16:06:47,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:06:47,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-08 16:06:47,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-08 16:06:47,102 INFO L87 Difference]: Start difference. First operand 93 states and 99 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-08 16:06:47,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:06:47,400 INFO L93 Difference]: Finished difference Result 92 states and 98 transitions.
[2024-11-08 16:06:47,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-08 16:06:47,402 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25
[2024-11-08 16:06:47,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:06:47,403 INFO L225 Difference]: With dead ends: 92
[2024-11-08 16:06:47,405 INFO L226 Difference]: Without dead ends: 92
[2024-11-08 16:06:47,406 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-08 16:06:47,407 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 6 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-08 16:06:47,409 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 332 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-08 16:06:47,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states.
[2024-11-08 16:06:47,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92.
[2024-11-08 16:06:47,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 53 states have (on average 1.7735849056603774) internal successors, (94), 88 states have internal predecessors, (94), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 16:06:47,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 98 transitions.
[2024-11-08 16:06:47,424 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 98 transitions. Word has length 25
[2024-11-08 16:06:47,424 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:06:47,424 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 98 transitions.
[2024-11-08 16:06:47,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-08 16:06:47,425 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 98 transitions.
[2024-11-08 16:06:47,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2024-11-08 16:06:47,429 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:06:47,430 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:06:47,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2024-11-08 16:06:47,430 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:06:47,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:06:47,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1669147837, now seen corresponding path program 1 times
[2024-11-08 16:06:47,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:06:47,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304907780]
[2024-11-08 16:06:47,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:06:47,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:06:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:06:47,674 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-11-08 16:06:47,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:06:47,739 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2024-11-08 16:06:47,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:06:47,880 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 16:06:47,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:06:47,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304907780]
[2024-11-08 16:06:47,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304907780] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:06:47,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786464382]
[2024-11-08 16:06:47,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:06:47,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:06:47,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:06:47,884 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:06:47,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-08 16:06:48,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:06:48,064 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 15 conjuncts are in the unsatisfiable core
[2024-11-08 16:06:48,074 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:06:48,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2024-11-08 16:06:48,219 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| (select |c_#valid| |node_create_~temp~0#1.base|))) (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|)))) is different from true
[2024-11-08 16:06:48,336 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size
[2024-11-08 16:06:48,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16
[2024-11-08 16:06:48,351 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked.
[2024-11-08 16:06:48,352 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 16:06:48,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786464382] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:06:48,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 16:06:48,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10
[2024-11-08 16:06:48,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317763843]
[2024-11-08 16:06:48,443 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 16:06:48,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2024-11-08 16:06:48,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:06:48,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2024-11-08 16:06:48,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=87, Unknown=1, NotChecked=18, Total=132
[2024-11-08 16:06:48,446 INFO L87 Difference]: Start difference. First operand 92 states and 98 transitions. Second operand has 11 states, 10 states have (on average 3.3) internal successors, (33), 8 states have internal predecessors, (33), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-08 16:06:48,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:06:48,834 INFO L93 Difference]: Finished difference Result 97 states and 106 transitions.
[2024-11-08 16:06:48,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-08 16:06:48,835 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.3) internal successors, (33), 8 states have internal predecessors, (33), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27
[2024-11-08 16:06:48,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:06:48,836 INFO L225 Difference]: With dead ends: 97
[2024-11-08 16:06:48,836 INFO L226 Difference]: Without dead ends: 97
[2024-11-08 16:06:48,837 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=124, Unknown=1, NotChecked=22, Total=182
[2024-11-08 16:06:48,838 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 0 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 99 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-08 16:06:48,838 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 333 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 329 Invalid, 0 Unknown, 99 Unchecked, 0.3s Time]
[2024-11-08 16:06:48,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states.
[2024-11-08 16:06:48,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97.
[2024-11-08 16:06:48,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 57 states have (on average 1.7543859649122806) internal successors, (100), 92 states have internal predecessors, (100), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-08 16:06:48,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 106 transitions.
[2024-11-08 16:06:48,849 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 106 transitions. Word has length 27
[2024-11-08 16:06:48,850 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:06:48,850 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 106 transitions.
[2024-11-08 16:06:48,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.3) internal successors, (33), 8 states have internal predecessors, (33), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-08 16:06:48,850 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 106 transitions.
[2024-11-08 16:06:48,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2024-11-08 16:06:48,851 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:06:48,851 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:06:48,873 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-08 16:06:49,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:06:49,056 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:06:49,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:06:49,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1669147836, now seen corresponding path program 1 times
[2024-11-08 16:06:49,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:06:49,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085310514]
[2024-11-08 16:06:49,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:06:49,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:06:49,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:06:49,360 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-11-08 16:06:49,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:06:49,575 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2024-11-08 16:06:49,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:06:49,738 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 16:06:49,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:06:49,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085310514]
[2024-11-08 16:06:49,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085310514] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:06:49,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440398162]
[2024-11-08 16:06:49,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:06:49,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:06:49,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:06:49,742 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:06:49,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-08 16:06:49,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:06:49,909 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 27 conjuncts are in the unsatisfiable core
[2024-11-08 16:06:49,912 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:06:49,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2024-11-08 16:06:49,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2024-11-08 16:06:50,082 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (= (store |c_old(#length)| |node_create_~temp~0#1.base| (select |c_#length| |node_create_~temp~0#1.base|)) |c_#length|) (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|)))) is different from true
[2024-11-08 16:06:50,144 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 16:06:50,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9
[2024-11-08 16:06:50,155 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2024-11-08 16:06:50,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11
[2024-11-08 16:06:50,176 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked.
[2024-11-08 16:06:50,176 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 16:06:50,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440398162] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:06:50,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 16:06:50,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 13
[2024-11-08 16:06:50,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531832670]
[2024-11-08 16:06:50,337 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 16:06:50,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2024-11-08 16:06:50,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:06:50,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2024-11-08 16:06:50,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=173, Unknown=1, NotChecked=26, Total=240
[2024-11-08 16:06:50,339 INFO L87 Difference]: Start difference. First operand 97 states and 106 transitions. Second operand has 14 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 11 states have internal predecessors, (35), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-08 16:06:50,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:06:50,717 INFO L93 Difference]: Finished difference Result 97 states and 105 transitions.
[2024-11-08 16:06:50,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-11-08 16:06:50,718 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 11 states have internal predecessors, (35), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27
[2024-11-08 16:06:50,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:06:50,719 INFO L225 Difference]: With dead ends: 97
[2024-11-08 16:06:50,720 INFO L226 Difference]: Without dead ends: 97
[2024-11-08 16:06:50,720 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=224, Unknown=1, NotChecked=30, Total=306
[2024-11-08 16:06:50,721 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 0 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 98 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-08 16:06:50,722 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 334 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 239 Invalid, 0 Unknown, 98 Unchecked, 0.3s Time]
[2024-11-08 16:06:50,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states.
[2024-11-08 16:06:50,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97.
[2024-11-08 16:06:50,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 57 states have (on average 1.736842105263158) internal successors, (99), 92 states have internal predecessors, (99), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-08 16:06:50,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 105 transitions.
[2024-11-08 16:06:50,732 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 105 transitions. Word has length 27
[2024-11-08 16:06:50,732 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:06:50,732 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 105 transitions.
[2024-11-08 16:06:50,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 11 states have internal predecessors, (35), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-08 16:06:50,733 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 105 transitions.
[2024-11-08 16:06:50,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2024-11-08 16:06:50,734 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:06:50,734 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:06:50,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-11-08 16:06:50,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6
[2024-11-08 16:06:50,938 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:06:50,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:06:50,939 INFO L85 PathProgramCache]: Analyzing trace with hash -2028115226, now seen corresponding path program 1 times
[2024-11-08 16:06:50,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:06:50,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303763319]
[2024-11-08 16:06:50,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:06:50,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:06:50,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:06:51,073 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-11-08 16:06:51,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:06:51,153 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2024-11-08 16:06:51,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:06:51,175 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 16:06:51,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:06:51,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303763319]
[2024-11-08 16:06:51,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303763319] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:06:51,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906561726]
[2024-11-08 16:06:51,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:06:51,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:06:51,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:06:51,179 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:06:51,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-08 16:06:51,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:06:51,325 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 9 conjuncts are in the unsatisfiable core
[2024-11-08 16:06:51,327 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:06:51,369 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 16:06:51,369 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 16:06:51,421 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 16:06:51,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906561726] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 16:06:51,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 16:06:51,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 7
[2024-11-08 16:06:51,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550744627]
[2024-11-08 16:06:51,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 16:06:51,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-08 16:06:51,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:06:51,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-08 16:06:51,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-08 16:06:51,424 INFO L87 Difference]: Start difference. First operand 97 states and 105 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 16:06:51,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:06:51,580 INFO L93 Difference]: Finished difference Result 97 states and 104 transitions.
[2024-11-08 16:06:51,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-08 16:06:51,580 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29
[2024-11-08 16:06:51,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:06:51,581 INFO L225 Difference]: With dead ends: 97
[2024-11-08 16:06:51,581 INFO L226 Difference]: Without dead ends: 97
[2024-11-08 16:06:51,582 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-08 16:06:51,582 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 1 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 16:06:51,583 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 450 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 16:06:51,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states.
[2024-11-08 16:06:51,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97.
[2024-11-08 16:06:51,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 57 states have (on average 1.719298245614035) internal successors, (98), 92 states have internal predecessors, (98), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-08 16:06:51,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 104 transitions.
[2024-11-08 16:06:51,593 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 104 transitions. Word has length 29
[2024-11-08 16:06:51,593 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:06:51,594 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 104 transitions.
[2024-11-08 16:06:51,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 16:06:51,594 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 104 transitions.
[2024-11-08 16:06:51,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2024-11-08 16:06:51,597 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:06:51,597 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:06:51,619 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-11-08 16:06:51,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7
[2024-11-08 16:06:51,799 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:06:51,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:06:51,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1548139101, now seen corresponding path program 1 times
[2024-11-08 16:06:51,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:06:51,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631593149]
[2024-11-08 16:06:51,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:06:51,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:06:51,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:06:51,903 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-11-08 16:06:51,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:06:51,916 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2024-11-08 16:06:51,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:06:51,937 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2024-11-08 16:06:51,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:06:51,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631593149]
[2024-11-08 16:06:51,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631593149] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:06:51,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504606385]
[2024-11-08 16:06:51,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:06:51,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:06:51,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:06:51,940 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:06:51,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-08 16:06:52,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:06:52,101 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 17 conjuncts are in the unsatisfiable core
[2024-11-08 16:06:52,104 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:06:52,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2024-11-08 16:06:52,198 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| (select |c_#valid| |node_create_~temp~0#1.base|))) (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|)))) is different from true
[2024-11-08 16:06:52,272 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size
[2024-11-08 16:06:52,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16
[2024-11-08 16:06:52,287 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 7 not checked.
[2024-11-08 16:06:52,288 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 16:06:52,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504606385] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:06:52,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 16:06:52,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10
[2024-11-08 16:06:52,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179089694]
[2024-11-08 16:06:52,362 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 16:06:52,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2024-11-08 16:06:52,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:06:52,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2024-11-08 16:06:52,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=89, Unknown=1, NotChecked=18, Total=132
[2024-11-08 16:06:52,364 INFO L87 Difference]: Start difference. First operand 97 states and 104 transitions. Second operand has 11 states, 10 states have (on average 4.0) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4)
[2024-11-08 16:06:52,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:06:52,855 INFO L93 Difference]: Finished difference Result 96 states and 103 transitions.
[2024-11-08 16:06:52,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-11-08 16:06:52,857 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.0) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 30
[2024-11-08 16:06:52,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:06:52,858 INFO L225 Difference]: With dead ends: 96
[2024-11-08 16:06:52,858 INFO L226 Difference]: Without dead ends: 96
[2024-11-08 16:06:52,859 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=149, Unknown=1, NotChecked=24, Total=210
[2024-11-08 16:06:52,860 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 10 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 96 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2024-11-08 16:06:52,860 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 447 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 377 Invalid, 0 Unknown, 96 Unchecked, 0.4s Time]
[2024-11-08 16:06:52,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states.
[2024-11-08 16:06:52,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96.
[2024-11-08 16:06:52,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 57 states have (on average 1.7017543859649122) internal successors, (97), 91 states have internal predecessors, (97), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-08 16:06:52,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 103 transitions.
[2024-11-08 16:06:52,871 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 103 transitions. Word has length 30
[2024-11-08 16:06:52,872 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:06:52,872 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 103 transitions.
[2024-11-08 16:06:52,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.0) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4)
[2024-11-08 16:06:52,872 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 103 transitions.
[2024-11-08 16:06:52,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2024-11-08 16:06:52,873 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:06:52,873 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:06:52,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2024-11-08 16:06:53,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8
[2024-11-08 16:06:53,074 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:06:53,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:06:53,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1548139102, now seen corresponding path program 1 times
[2024-11-08 16:06:53,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:06:53,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506815130]
[2024-11-08 16:06:53,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:06:53,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:06:53,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:06:53,335 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-11-08 16:06:53,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:06:53,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2024-11-08 16:06:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:06:53,446 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 16:06:53,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:06:53,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506815130]
[2024-11-08 16:06:53,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506815130] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:06:53,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823903377]
[2024-11-08 16:06:53,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:06:53,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:06:53,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:06:53,449 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:06:53,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-11-08 16:06:53,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:06:53,616 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 31 conjuncts are in the unsatisfiable core
[2024-11-08 16:06:53,620 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:06:53,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2024-11-08 16:06:53,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2024-11-08 16:06:53,837 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (= (store |c_old(#length)| |node_create_~temp~0#1.base| (select |c_#length| |node_create_~temp~0#1.base|)) |c_#length|) (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|)))) is different from true
[2024-11-08 16:06:53,908 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 16:06:53,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9
[2024-11-08 16:06:53,925 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2024-11-08 16:06:53,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11
[2024-11-08 16:06:53,984 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked.
[2024-11-08 16:06:53,985 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 16:06:54,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823903377] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:06:54,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 16:06:54,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15
[2024-11-08 16:06:54,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536324966]
[2024-11-08 16:06:54,168 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 16:06:54,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2024-11-08 16:06:54,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:06:54,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2024-11-08 16:06:54,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=230, Unknown=1, NotChecked=30, Total=306
[2024-11-08 16:06:54,172 INFO L87 Difference]: Start difference. First operand 96 states and 103 transitions. Second operand has 16 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 12 states have internal predecessors, (50), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4)
[2024-11-08 16:06:54,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:06:54,725 INFO L93 Difference]: Finished difference Result 115 states and 129 transitions.
[2024-11-08 16:06:54,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2024-11-08 16:06:54,725 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 12 states have internal predecessors, (50), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 30
[2024-11-08 16:06:54,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:06:54,727 INFO L225 Difference]: With dead ends: 115
[2024-11-08 16:06:54,728 INFO L226 Difference]: Without dead ends: 115
[2024-11-08 16:06:54,728 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=353, Unknown=1, NotChecked=38, Total=462
[2024-11-08 16:06:54,729 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 15 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 122 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2024-11-08 16:06:54,729 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 630 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 491 Invalid, 0 Unknown, 122 Unchecked, 0.4s Time]
[2024-11-08 16:06:54,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states.
[2024-11-08 16:06:54,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 108.
[2024-11-08 16:06:54,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 68 states have (on average 1.6911764705882353) internal successors, (115), 102 states have internal predecessors, (115), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-11-08 16:06:54,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 123 transitions.
[2024-11-08 16:06:54,734 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 123 transitions. Word has length 30
[2024-11-08 16:06:54,734 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:06:54,734 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 123 transitions.
[2024-11-08 16:06:54,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 12 states have internal predecessors, (50), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4)
[2024-11-08 16:06:54,735 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 123 transitions.
[2024-11-08 16:06:54,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2024-11-08 16:06:54,735 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:06:54,736 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:06:54,756 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2024-11-08 16:06:54,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2024-11-08 16:06:54,937 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:06:54,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:06:54,937 INFO L85 PathProgramCache]: Analyzing trace with hash 747671880, now seen corresponding path program 1 times
[2024-11-08 16:06:54,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:06:54,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711955010]
[2024-11-08 16:06:54,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:06:54,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:06:54,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:06:55,074 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-11-08 16:06:55,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:06:55,084 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2024-11-08 16:06:55,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:06:55,138 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2024-11-08 16:06:55,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:06:55,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711955010]
[2024-11-08 16:06:55,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711955010] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:06:55,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:06:55,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2024-11-08 16:06:55,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071389939]
[2024-11-08 16:06:55,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:06:55,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-08 16:06:55,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:06:55,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-08 16:06:55,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2024-11-08 16:06:55,144 INFO L87 Difference]: Start difference. First operand 108 states and 123 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-08 16:06:55,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:06:55,418 INFO L93 Difference]: Finished difference Result 107 states and 122 transitions.
[2024-11-08 16:06:55,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-11-08 16:06:55,419 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 31
[2024-11-08 16:06:55,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:06:55,420 INFO L225 Difference]: With dead ends: 107
[2024-11-08 16:06:55,420 INFO L226 Difference]: Without dead ends: 107
[2024-11-08 16:06:55,420 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2024-11-08 16:06:55,421 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 9 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-08 16:06:55,421 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 346 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-08 16:06:55,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states.
[2024-11-08 16:06:55,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107.
[2024-11-08 16:06:55,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 68 states have (on average 1.6764705882352942) internal successors, (114), 101 states have internal predecessors, (114), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-11-08 16:06:55,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 122 transitions.
[2024-11-08 16:06:55,428 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 122 transitions. Word has length 31
[2024-11-08 16:06:55,429 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:06:55,429 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 122 transitions.
[2024-11-08 16:06:55,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-08 16:06:55,429 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 122 transitions.
[2024-11-08 16:06:55,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2024-11-08 16:06:55,431 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:06:55,433 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:06:55,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2024-11-08 16:06:55,434 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:06:55,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:06:55,434 INFO L85 PathProgramCache]: Analyzing trace with hash 747671881, now seen corresponding path program 1 times
[2024-11-08 16:06:55,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:06:55,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260269050]
[2024-11-08 16:06:55,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:06:55,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:06:55,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:06:55,684 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-11-08 16:06:55,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:06:55,695 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2024-11-08 16:06:55,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:06:55,780 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 16:06:55,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:06:55,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260269050]
[2024-11-08 16:06:55,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260269050] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:06:55,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:06:55,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2024-11-08 16:06:55,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368446589]
[2024-11-08 16:06:55,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:06:55,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-08 16:06:55,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:06:55,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-08 16:06:55,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2024-11-08 16:06:55,783 INFO L87 Difference]: Start difference. First operand 107 states and 122 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-08 16:06:56,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:06:56,044 INFO L93 Difference]: Finished difference Result 106 states and 121 transitions.
[2024-11-08 16:06:56,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-11-08 16:06:56,045 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 31
[2024-11-08 16:06:56,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:06:56,046 INFO L225 Difference]: With dead ends: 106
[2024-11-08 16:06:56,046 INFO L226 Difference]: Without dead ends: 106
[2024-11-08 16:06:56,046 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2024-11-08 16:06:56,047 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 8 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-08 16:06:56,047 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 371 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-08 16:06:56,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states.
[2024-11-08 16:06:56,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106.
[2024-11-08 16:06:56,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 68 states have (on average 1.661764705882353) internal successors, (113), 100 states have internal predecessors, (113), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-11-08 16:06:56,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 121 transitions.
[2024-11-08 16:06:56,051 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 121 transitions. Word has length 31
[2024-11-08 16:06:56,051 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:06:56,051 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 121 transitions.
[2024-11-08 16:06:56,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-08 16:06:56,052 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 121 transitions.
[2024-11-08 16:06:56,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36
[2024-11-08 16:06:56,052 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:06:56,053 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:06:56,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2024-11-08 16:06:56,053 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:06:56,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:06:56,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1675263756, now seen corresponding path program 1 times
[2024-11-08 16:06:56,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:06:56,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016600956]
[2024-11-08 16:06:56,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:06:56,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:06:56,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:06:56,207 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-11-08 16:06:56,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:06:56,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2024-11-08 16:06:56,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:06:56,243 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2024-11-08 16:06:56,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:06:56,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016600956]
[2024-11-08 16:06:56,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016600956] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:06:56,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290814641]
[2024-11-08 16:06:56,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:06:56,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:06:56,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:06:56,246 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:06:56,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2024-11-08 16:06:56,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:06:56,462 INFO L255 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-08 16:06:56,464 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:06:56,507 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2024-11-08 16:06:56,507 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 16:06:56,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290814641] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:06:56,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-08 16:06:56,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7
[2024-11-08 16:06:56,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396783552]
[2024-11-08 16:06:56,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:06:56,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 16:06:56,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:06:56,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 16:06:56,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2024-11-08 16:06:56,509 INFO L87 Difference]: Start difference. First operand 106 states and 121 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-08 16:06:56,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:06:56,540 INFO L93 Difference]: Finished difference Result 156 states and 172 transitions.
[2024-11-08 16:06:56,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-08 16:06:56,541 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 35
[2024-11-08 16:06:56,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:06:56,542 INFO L225 Difference]: With dead ends: 156
[2024-11-08 16:06:56,542 INFO L226 Difference]: Without dead ends: 156
[2024-11-08 16:06:56,543 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2024-11-08 16:06:56,544 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 157 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-08 16:06:56,544 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 172 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-08 16:06:56,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states.
[2024-11-08 16:06:56,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 108.
[2024-11-08 16:06:56,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 70 states have (on average 1.6428571428571428) internal successors, (115), 102 states have internal predecessors, (115), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-11-08 16:06:56,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 123 transitions.
[2024-11-08 16:06:56,549 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 123 transitions. Word has length 35
[2024-11-08 16:06:56,549 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:06:56,549 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 123 transitions.
[2024-11-08 16:06:56,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-08 16:06:56,550 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 123 transitions.
[2024-11-08 16:06:56,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2024-11-08 16:06:56,551 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:06:56,551 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:06:56,579 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2024-11-08 16:06:56,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:06:56,752 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:06:56,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:06:56,752 INFO L85 PathProgramCache]: Analyzing trace with hash 393509477, now seen corresponding path program 1 times
[2024-11-08 16:06:56,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:06:56,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625530087]
[2024-11-08 16:06:56,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:06:56,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:06:56,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:06:57,049 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-11-08 16:06:57,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:06:57,121 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2024-11-08 16:06:57,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:06:57,217 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-11-08 16:06:57,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:06:57,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625530087]
[2024-11-08 16:06:57,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625530087] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:06:57,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146562168]
[2024-11-08 16:06:57,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:06:57,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:06:57,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:06:57,220 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:06:57,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2024-11-08 16:06:57,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:06:57,421 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 26 conjuncts are in the unsatisfiable core
[2024-11-08 16:06:57,424 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:06:57,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2024-11-08 16:06:57,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3
[2024-11-08 16:06:57,524 WARN L851 $PredicateComparison]: unable to prove that (and (or (= (select |c_#valid| |c_ULTIMATE.start_main_~#s~0#1.base|) 1) (exists ((|v_#valid_BEFORE_CALL_10| (Array Int Int))) (let ((.cse0 (@diff |v_#valid_BEFORE_CALL_10| |c_#valid|))) (and (= |c_ULTIMATE.start_dll_circular_create_#t~ret4#1.base| .cse0) (= (select |v_#valid_BEFORE_CALL_10| |c_ULTIMATE.start_main_~#s~0#1.base|) 1) (= |c_#valid| (store |v_#valid_BEFORE_CALL_10| .cse0 (select |c_#valid| .cse0))))))) (<= (+ |c_#StackHeapBarrier| 1) |c_ULTIMATE.start_main_~#s~0#1.base|)) is different from false
[2024-11-08 16:06:57,527 WARN L873 $PredicateComparison]: unable to prove that (and (or (= (select |c_#valid| |c_ULTIMATE.start_main_~#s~0#1.base|) 1) (exists ((|v_#valid_BEFORE_CALL_10| (Array Int Int))) (let ((.cse0 (@diff |v_#valid_BEFORE_CALL_10| |c_#valid|))) (and (= |c_ULTIMATE.start_dll_circular_create_#t~ret4#1.base| .cse0) (= (select |v_#valid_BEFORE_CALL_10| |c_ULTIMATE.start_main_~#s~0#1.base|) 1) (= |c_#valid| (store |v_#valid_BEFORE_CALL_10| .cse0 (select |c_#valid| .cse0))))))) (<= (+ |c_#StackHeapBarrier| 1) |c_ULTIMATE.start_main_~#s~0#1.base|)) is different from true
[2024-11-08 16:06:57,552 WARN L851 $PredicateComparison]: unable to prove that (and (or (= (select |c_#valid| |c_ULTIMATE.start_main_~#s~0#1.base|) 1) (exists ((|v_#valid_BEFORE_CALL_10| (Array Int Int))) (let ((.cse0 (@diff |v_#valid_BEFORE_CALL_10| |c_#valid|))) (and (= (select |v_#valid_BEFORE_CALL_10| |c_ULTIMATE.start_main_~#s~0#1.base|) 1) (= |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| .cse0) (= |c_#valid| (store |v_#valid_BEFORE_CALL_10| .cse0 (select |c_#valid| .cse0))))))) (<= (+ |c_#StackHeapBarrier| 1) |c_ULTIMATE.start_main_~#s~0#1.base|)) is different from false
[2024-11-08 16:06:57,555 WARN L873 $PredicateComparison]: unable to prove that (and (or (= (select |c_#valid| |c_ULTIMATE.start_main_~#s~0#1.base|) 1) (exists ((|v_#valid_BEFORE_CALL_10| (Array Int Int))) (let ((.cse0 (@diff |v_#valid_BEFORE_CALL_10| |c_#valid|))) (and (= (select |v_#valid_BEFORE_CALL_10| |c_ULTIMATE.start_main_~#s~0#1.base|) 1) (= |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| .cse0) (= |c_#valid| (store |v_#valid_BEFORE_CALL_10| .cse0 (select |c_#valid| .cse0))))))) (<= (+ |c_#StackHeapBarrier| 1) |c_ULTIMATE.start_main_~#s~0#1.base|)) is different from true
[2024-11-08 16:06:57,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3
[2024-11-08 16:06:57,638 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (<= (+ |node_create_~temp~0#1.base| 1) |c_#StackHeapBarrier|) (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| (select |c_#valid| |node_create_~temp~0#1.base|))))) is different from true
[2024-11-08 16:06:57,727 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 16:06:57,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9
[2024-11-08 16:06:57,756 WARN L851 $PredicateComparison]: unable to prove that (or (= (select |c_#valid| |c_ULTIMATE.start_main_~#s~0#1.base|) 1) (exists ((|node_create_~temp~0#1.base| Int)) (and (exists ((|v_old(#valid)_AFTER_CALL_14| (Array Int Int))) (and (exists ((|v_#valid_BEFORE_CALL_10| (Array Int Int))) (let ((.cse0 (@diff |v_#valid_BEFORE_CALL_10| |v_old(#valid)_AFTER_CALL_14|))) (and (= (select |v_#valid_BEFORE_CALL_10| |c_ULTIMATE.start_main_~#s~0#1.base|) 1) (= |v_old(#valid)_AFTER_CALL_14| (store |v_#valid_BEFORE_CALL_10| .cse0 (select |v_old(#valid)_AFTER_CALL_14| .cse0))) (= |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| .cse0)))) (= |c_#valid| (store |v_old(#valid)_AFTER_CALL_14| |node_create_~temp~0#1.base| (select |c_#valid| |node_create_~temp~0#1.base|))))) (<= (+ |node_create_~temp~0#1.base| 2) |c_ULTIMATE.start_main_~#s~0#1.base|)))) is different from false
[2024-11-08 16:06:57,761 WARN L873 $PredicateComparison]: unable to prove that (or (= (select |c_#valid| |c_ULTIMATE.start_main_~#s~0#1.base|) 1) (exists ((|node_create_~temp~0#1.base| Int)) (and (exists ((|v_old(#valid)_AFTER_CALL_14| (Array Int Int))) (and (exists ((|v_#valid_BEFORE_CALL_10| (Array Int Int))) (let ((.cse0 (@diff |v_#valid_BEFORE_CALL_10| |v_old(#valid)_AFTER_CALL_14|))) (and (= (select |v_#valid_BEFORE_CALL_10| |c_ULTIMATE.start_main_~#s~0#1.base|) 1) (= |v_old(#valid)_AFTER_CALL_14| (store |v_#valid_BEFORE_CALL_10| .cse0 (select |v_old(#valid)_AFTER_CALL_14| .cse0))) (= |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| .cse0)))) (= |c_#valid| (store |v_old(#valid)_AFTER_CALL_14| |node_create_~temp~0#1.base| (select |c_#valid| |node_create_~temp~0#1.base|))))) (<= (+ |node_create_~temp~0#1.base| 2) |c_ULTIMATE.start_main_~#s~0#1.base|)))) is different from true
[2024-11-08 16:06:58,032 WARN L851 $PredicateComparison]: unable to prove that (or (and (= (select |c_#valid| |c_ULTIMATE.start_main_~#s~0#1.base|) 1) (exists ((|ULTIMATE.start_dll_circular_create_~last~0#1.base| Int)) (= (select |c_#valid| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) 1))) (exists ((|node_create_~temp~0#1.base| Int) (|v_#valid_BEFORE_CALL_10| (Array Int Int)) (|v_old(#valid)_AFTER_CALL_14| (Array Int Int))) (let ((.cse0 (@diff |v_#valid_BEFORE_CALL_10| |v_old(#valid)_AFTER_CALL_14|))) (and (= (select |v_#valid_BEFORE_CALL_10| |c_ULTIMATE.start_main_~#s~0#1.base|) 1) (= |v_old(#valid)_AFTER_CALL_14| (store |v_#valid_BEFORE_CALL_10| .cse0 (select |v_old(#valid)_AFTER_CALL_14| .cse0))) (= (select |c_#valid| .cse0) 1) (= |c_#valid| (store |v_old(#valid)_AFTER_CALL_14| |node_create_~temp~0#1.base| (select |c_#valid| |node_create_~temp~0#1.base|))) (<= (+ |node_create_~temp~0#1.base| 2) |c_ULTIMATE.start_main_~#s~0#1.base|))))) is different from false
[2024-11-08 16:06:58,036 WARN L873 $PredicateComparison]: unable to prove that (or (and (= (select |c_#valid| |c_ULTIMATE.start_main_~#s~0#1.base|) 1) (exists ((|ULTIMATE.start_dll_circular_create_~last~0#1.base| Int)) (= (select |c_#valid| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) 1))) (exists ((|node_create_~temp~0#1.base| Int) (|v_#valid_BEFORE_CALL_10| (Array Int Int)) (|v_old(#valid)_AFTER_CALL_14| (Array Int Int))) (let ((.cse0 (@diff |v_#valid_BEFORE_CALL_10| |v_old(#valid)_AFTER_CALL_14|))) (and (= (select |v_#valid_BEFORE_CALL_10| |c_ULTIMATE.start_main_~#s~0#1.base|) 1) (= |v_old(#valid)_AFTER_CALL_14| (store |v_#valid_BEFORE_CALL_10| .cse0 (select |v_old(#valid)_AFTER_CALL_14| .cse0))) (= (select |c_#valid| .cse0) 1) (= |c_#valid| (store |v_old(#valid)_AFTER_CALL_14| |node_create_~temp~0#1.base| (select |c_#valid| |node_create_~temp~0#1.base|))) (<= (+ |node_create_~temp~0#1.base| 2) |c_ULTIMATE.start_main_~#s~0#1.base|))))) is different from true
[2024-11-08 16:06:58,183 WARN L851 $PredicateComparison]: unable to prove that (or (and (exists ((|ULTIMATE.start_dll_circular_create_~last~0#1.base| Int)) (= (select |c_#valid| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) 1)) (= (select |c_#valid| |c_ULTIMATE.start_dll_circular_remove_last_~head#1.base|) 1)) (exists ((|node_create_~temp~0#1.base| Int) (|v_#valid_BEFORE_CALL_10| (Array Int Int)) (|v_old(#valid)_AFTER_CALL_14| (Array Int Int))) (let ((.cse0 (@diff |v_#valid_BEFORE_CALL_10| |v_old(#valid)_AFTER_CALL_14|))) (and (= |v_old(#valid)_AFTER_CALL_14| (store |v_#valid_BEFORE_CALL_10| .cse0 (select |v_old(#valid)_AFTER_CALL_14| .cse0))) (= (select |c_#valid| .cse0) 1) (= (select |v_#valid_BEFORE_CALL_10| |c_ULTIMATE.start_dll_circular_remove_last_~head#1.base|) 1) (= |c_#valid| (store |v_old(#valid)_AFTER_CALL_14| |node_create_~temp~0#1.base| (select |c_#valid| |node_create_~temp~0#1.base|))) (<= (+ |node_create_~temp~0#1.base| 2) |c_ULTIMATE.start_dll_circular_remove_last_~head#1.base|))))) is different from false
[2024-11-08 16:06:58,186 WARN L873 $PredicateComparison]: unable to prove that (or (and (exists ((|ULTIMATE.start_dll_circular_create_~last~0#1.base| Int)) (= (select |c_#valid| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) 1)) (= (select |c_#valid| |c_ULTIMATE.start_dll_circular_remove_last_~head#1.base|) 1)) (exists ((|node_create_~temp~0#1.base| Int) (|v_#valid_BEFORE_CALL_10| (Array Int Int)) (|v_old(#valid)_AFTER_CALL_14| (Array Int Int))) (let ((.cse0 (@diff |v_#valid_BEFORE_CALL_10| |v_old(#valid)_AFTER_CALL_14|))) (and (= |v_old(#valid)_AFTER_CALL_14| (store |v_#valid_BEFORE_CALL_10| .cse0 (select |v_old(#valid)_AFTER_CALL_14| .cse0))) (= (select |c_#valid| .cse0) 1) (= (select |v_#valid_BEFORE_CALL_10| |c_ULTIMATE.start_dll_circular_remove_last_~head#1.base|) 1) (= |c_#valid| (store |v_old(#valid)_AFTER_CALL_14| |node_create_~temp~0#1.base| (select |c_#valid| |node_create_~temp~0#1.base|))) (<= (+ |node_create_~temp~0#1.base| 2) |c_ULTIMATE.start_dll_circular_remove_last_~head#1.base|))))) is different from true
[2024-11-08 16:06:58,187 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 8 not checked.
[2024-11-08 16:06:58,187 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 16:06:58,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146562168] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:06:58,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 16:06:58,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 18
[2024-11-08 16:06:58,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381417536]
[2024-11-08 16:06:58,316 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 16:06:58,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2024-11-08 16:06:58,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:06:58,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2024-11-08 16:06:58,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=165, Unknown=11, NotChecked=186, Total=420
[2024-11-08 16:06:58,318 INFO L87 Difference]: Start difference. First operand 108 states and 123 transitions. Second operand has 19 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 15 states have internal predecessors, (57), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-11-08 16:06:58,457 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (= (select |c_#valid| |c_ULTIMATE.start_main_~#s~0#1.base|) 1))) (and .cse0 (or .cse0 (exists ((|v_#valid_BEFORE_CALL_10| (Array Int Int))) (let ((.cse1 (@diff |v_#valid_BEFORE_CALL_10| |c_#valid|))) (and (= |c_ULTIMATE.start_dll_circular_create_#t~ret4#1.base| .cse1) (= (select |v_#valid_BEFORE_CALL_10| |c_ULTIMATE.start_main_~#s~0#1.base|) 1) (= |c_#valid| (store |v_#valid_BEFORE_CALL_10| .cse1 (select |c_#valid| .cse1))))))) (<= (+ |c_#StackHeapBarrier| 1) |c_ULTIMATE.start_main_~#s~0#1.base|))) is different from false
[2024-11-08 16:06:58,460 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 (= (select |c_#valid| |c_ULTIMATE.start_main_~#s~0#1.base|) 1))) (and .cse0 (or .cse0 (exists ((|v_#valid_BEFORE_CALL_10| (Array Int Int))) (let ((.cse1 (@diff |v_#valid_BEFORE_CALL_10| |c_#valid|))) (and (= |c_ULTIMATE.start_dll_circular_create_#t~ret4#1.base| .cse1) (= (select |v_#valid_BEFORE_CALL_10| |c_ULTIMATE.start_main_~#s~0#1.base|) 1) (= |c_#valid| (store |v_#valid_BEFORE_CALL_10| .cse1 (select |c_#valid| .cse1))))))) (<= (+ |c_#StackHeapBarrier| 1) |c_ULTIMATE.start_main_~#s~0#1.base|))) is different from true
[2024-11-08 16:06:58,464 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (= (select |c_#valid| |c_ULTIMATE.start_main_~#s~0#1.base|) 1))) (and (or .cse0 (= |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|)) (or .cse0 (exists ((|v_#valid_BEFORE_CALL_10| (Array Int Int))) (let ((.cse1 (@diff |v_#valid_BEFORE_CALL_10| |c_#valid|))) (and (= (select |v_#valid_BEFORE_CALL_10| |c_ULTIMATE.start_main_~#s~0#1.base|) 1) (= |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| .cse1) (= |c_#valid| (store |v_#valid_BEFORE_CALL_10| .cse1 (select |c_#valid| .cse1))))))) (<= (+ |c_#StackHeapBarrier| 1) |c_ULTIMATE.start_main_~#s~0#1.base|))) is different from false
[2024-11-08 16:06:58,467 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 (= (select |c_#valid| |c_ULTIMATE.start_main_~#s~0#1.base|) 1))) (and (or .cse0 (= |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|)) (or .cse0 (exists ((|v_#valid_BEFORE_CALL_10| (Array Int Int))) (let ((.cse1 (@diff |v_#valid_BEFORE_CALL_10| |c_#valid|))) (and (= (select |v_#valid_BEFORE_CALL_10| |c_ULTIMATE.start_main_~#s~0#1.base|) 1) (= |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| .cse1) (= |c_#valid| (store |v_#valid_BEFORE_CALL_10| .cse1 (select |c_#valid| .cse1))))))) (<= (+ |c_#StackHeapBarrier| 1) |c_ULTIMATE.start_main_~#s~0#1.base|))) is different from true
[2024-11-08 16:06:58,473 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (= (select |c_#valid| |c_ULTIMATE.start_main_~#s~0#1.base|) 1))) (and (or .cse0 (= |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|)) (or .cse0 (exists ((|node_create_~temp~0#1.base| Int)) (and (exists ((|v_old(#valid)_AFTER_CALL_14| (Array Int Int))) (and (exists ((|v_#valid_BEFORE_CALL_10| (Array Int Int))) (let ((.cse1 (@diff |v_#valid_BEFORE_CALL_10| |v_old(#valid)_AFTER_CALL_14|))) (and (= (select |v_#valid_BEFORE_CALL_10| |c_ULTIMATE.start_main_~#s~0#1.base|) 1) (= |v_old(#valid)_AFTER_CALL_14| (store |v_#valid_BEFORE_CALL_10| .cse1 (select |v_old(#valid)_AFTER_CALL_14| .cse1))) (= |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| .cse1)))) (= |c_#valid| (store |v_old(#valid)_AFTER_CALL_14| |node_create_~temp~0#1.base| (select |c_#valid| |node_create_~temp~0#1.base|))))) (<= (+ |node_create_~temp~0#1.base| 2) |c_ULTIMATE.start_main_~#s~0#1.base|)))))) is different from false
[2024-11-08 16:06:58,476 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 (= (select |c_#valid| |c_ULTIMATE.start_main_~#s~0#1.base|) 1))) (and (or .cse0 (= |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|)) (or .cse0 (exists ((|node_create_~temp~0#1.base| Int)) (and (exists ((|v_old(#valid)_AFTER_CALL_14| (Array Int Int))) (and (exists ((|v_#valid_BEFORE_CALL_10| (Array Int Int))) (let ((.cse1 (@diff |v_#valid_BEFORE_CALL_10| |v_old(#valid)_AFTER_CALL_14|))) (and (= (select |v_#valid_BEFORE_CALL_10| |c_ULTIMATE.start_main_~#s~0#1.base|) 1) (= |v_old(#valid)_AFTER_CALL_14| (store |v_#valid_BEFORE_CALL_10| .cse1 (select |v_old(#valid)_AFTER_CALL_14| .cse1))) (= |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| .cse1)))) (= |c_#valid| (store |v_old(#valid)_AFTER_CALL_14| |node_create_~temp~0#1.base| (select |c_#valid| |node_create_~temp~0#1.base|))))) (<= (+ |node_create_~temp~0#1.base| 2) |c_ULTIMATE.start_main_~#s~0#1.base|)))))) is different from true
[2024-11-08 16:06:58,482 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (= (select |c_#valid| |c_ULTIMATE.start_main_~#s~0#1.base|) 1))) (and .cse0 (or (and .cse0 (exists ((|ULTIMATE.start_dll_circular_create_~last~0#1.base| Int)) (= (select |c_#valid| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) 1))) (exists ((|node_create_~temp~0#1.base| Int) (|v_#valid_BEFORE_CALL_10| (Array Int Int)) (|v_old(#valid)_AFTER_CALL_14| (Array Int Int))) (let ((.cse1 (@diff |v_#valid_BEFORE_CALL_10| |v_old(#valid)_AFTER_CALL_14|))) (and (= (select |v_#valid_BEFORE_CALL_10| |c_ULTIMATE.start_main_~#s~0#1.base|) 1) (= |v_old(#valid)_AFTER_CALL_14| (store |v_#valid_BEFORE_CALL_10| .cse1 (select |v_old(#valid)_AFTER_CALL_14| .cse1))) (= (select |c_#valid| .cse1) 1) (= |c_#valid| (store |v_old(#valid)_AFTER_CALL_14| |node_create_~temp~0#1.base| (select |c_#valid| |node_create_~temp~0#1.base|))) (<= (+ |node_create_~temp~0#1.base| 2) |c_ULTIMATE.start_main_~#s~0#1.base|))))))) is different from false
[2024-11-08 16:06:58,485 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 (= (select |c_#valid| |c_ULTIMATE.start_main_~#s~0#1.base|) 1))) (and .cse0 (or (and .cse0 (exists ((|ULTIMATE.start_dll_circular_create_~last~0#1.base| Int)) (= (select |c_#valid| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) 1))) (exists ((|node_create_~temp~0#1.base| Int) (|v_#valid_BEFORE_CALL_10| (Array Int Int)) (|v_old(#valid)_AFTER_CALL_14| (Array Int Int))) (let ((.cse1 (@diff |v_#valid_BEFORE_CALL_10| |v_old(#valid)_AFTER_CALL_14|))) (and (= (select |v_#valid_BEFORE_CALL_10| |c_ULTIMATE.start_main_~#s~0#1.base|) 1) (= |v_old(#valid)_AFTER_CALL_14| (store |v_#valid_BEFORE_CALL_10| .cse1 (select |v_old(#valid)_AFTER_CALL_14| .cse1))) (= (select |c_#valid| .cse1) 1) (= |c_#valid| (store |v_old(#valid)_AFTER_CALL_14| |node_create_~temp~0#1.base| (select |c_#valid| |node_create_~temp~0#1.base|))) (<= (+ |node_create_~temp~0#1.base| 2) |c_ULTIMATE.start_main_~#s~0#1.base|))))))) is different from true
[2024-11-08 16:06:58,519 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (= (select |c_#valid| |c_ULTIMATE.start_dll_circular_remove_last_~head#1.base|) 1))) (and (or (and (exists ((|ULTIMATE.start_dll_circular_create_~last~0#1.base| Int)) (= (select |c_#valid| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) 1)) .cse0) (exists ((|node_create_~temp~0#1.base| Int) (|v_#valid_BEFORE_CALL_10| (Array Int Int)) (|v_old(#valid)_AFTER_CALL_14| (Array Int Int))) (let ((.cse1 (@diff |v_#valid_BEFORE_CALL_10| |v_old(#valid)_AFTER_CALL_14|))) (and (= |v_old(#valid)_AFTER_CALL_14| (store |v_#valid_BEFORE_CALL_10| .cse1 (select |v_old(#valid)_AFTER_CALL_14| .cse1))) (= (select |c_#valid| .cse1) 1) (= (select |v_#valid_BEFORE_CALL_10| |c_ULTIMATE.start_dll_circular_remove_last_~head#1.base|) 1) (= |c_#valid| (store |v_old(#valid)_AFTER_CALL_14| |node_create_~temp~0#1.base| (select |c_#valid| |node_create_~temp~0#1.base|))) (<= (+ |node_create_~temp~0#1.base| 2) |c_ULTIMATE.start_dll_circular_remove_last_~head#1.base|))))) .cse0)) is different from false
[2024-11-08 16:06:58,523 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 (= (select |c_#valid| |c_ULTIMATE.start_dll_circular_remove_last_~head#1.base|) 1))) (and (or (and (exists ((|ULTIMATE.start_dll_circular_create_~last~0#1.base| Int)) (= (select |c_#valid| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) 1)) .cse0) (exists ((|node_create_~temp~0#1.base| Int) (|v_#valid_BEFORE_CALL_10| (Array Int Int)) (|v_old(#valid)_AFTER_CALL_14| (Array Int Int))) (let ((.cse1 (@diff |v_#valid_BEFORE_CALL_10| |v_old(#valid)_AFTER_CALL_14|))) (and (= |v_old(#valid)_AFTER_CALL_14| (store |v_#valid_BEFORE_CALL_10| .cse1 (select |v_old(#valid)_AFTER_CALL_14| .cse1))) (= (select |c_#valid| .cse1) 1) (= (select |v_#valid_BEFORE_CALL_10| |c_ULTIMATE.start_dll_circular_remove_last_~head#1.base|) 1) (= |c_#valid| (store |v_old(#valid)_AFTER_CALL_14| |node_create_~temp~0#1.base| (select |c_#valid| |node_create_~temp~0#1.base|))) (<= (+ |node_create_~temp~0#1.base| 2) |c_ULTIMATE.start_dll_circular_remove_last_~head#1.base|))))) .cse0)) is different from true
[2024-11-08 16:06:58,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:06:58,956 INFO L93 Difference]: Finished difference Result 145 states and 163 transitions.
[2024-11-08 16:06:58,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2024-11-08 16:06:58,957 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 15 states have internal predecessors, (57), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 36
[2024-11-08 16:06:58,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:06:58,958 INFO L225 Difference]: With dead ends: 145
[2024-11-08 16:06:58,958 INFO L226 Difference]: Without dead ends: 145
[2024-11-08 16:06:58,959 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 11 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=243, Unknown=21, NotChecked=462, Total=812
[2024-11-08 16:06:58,959 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 65 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1073 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2024-11-08 16:06:58,960 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 480 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 546 Invalid, 0 Unknown, 1073 Unchecked, 0.5s Time]
[2024-11-08 16:06:58,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states.
[2024-11-08 16:06:58,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 117.
[2024-11-08 16:06:58,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 81 states have (on average 1.5925925925925926) internal successors, (129), 111 states have internal predecessors, (129), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-11-08 16:06:58,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 137 transitions.
[2024-11-08 16:06:58,967 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 137 transitions. Word has length 36
[2024-11-08 16:06:58,967 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:06:58,967 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 137 transitions.
[2024-11-08 16:06:58,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 15 states have internal predecessors, (57), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-11-08 16:06:58,968 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 137 transitions.
[2024-11-08 16:06:58,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2024-11-08 16:06:58,968 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:06:58,968 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:06:58,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2024-11-08 16:06:59,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13
[2024-11-08 16:06:59,169 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:06:59,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:06:59,170 INFO L85 PathProgramCache]: Analyzing trace with hash 393509478, now seen corresponding path program 1 times
[2024-11-08 16:06:59,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:06:59,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337407954]
[2024-11-08 16:06:59,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:06:59,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:06:59,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:06:59,564 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-11-08 16:06:59,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:06:59,662 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2024-11-08 16:06:59,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:06:59,719 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2024-11-08 16:06:59,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:06:59,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337407954]
[2024-11-08 16:06:59,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337407954] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:06:59,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401281228]
[2024-11-08 16:06:59,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:06:59,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:06:59,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:06:59,722 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:06:59,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2024-11-08 16:06:59,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:06:59,929 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 22 conjuncts are in the unsatisfiable core
[2024-11-08 16:06:59,932 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:06:59,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2024-11-08 16:06:59,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3
[2024-11-08 16:06:59,987 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (<= (+ |node_create_~temp~0#1.base| 1) |c_#StackHeapBarrier|) (= (store |c_old(#length)| |node_create_~temp~0#1.base| (select |c_#length| |node_create_~temp~0#1.base|)) |c_#length|))) is different from true
[2024-11-08 16:07:00,027 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 16:07:00,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9
[2024-11-08 16:07:00,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3
[2024-11-08 16:07:00,107 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 16:07:00,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9
[2024-11-08 16:07:00,186 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2024-11-08 16:07:00,186 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 16:07:00,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401281228] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:07:00,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 16:07:00,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 13
[2024-11-08 16:07:00,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655250483]
[2024-11-08 16:07:00,393 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 16:07:00,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2024-11-08 16:07:00,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:07:00,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2024-11-08 16:07:00,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=187, Unknown=1, NotChecked=28, Total=272
[2024-11-08 16:07:00,395 INFO L87 Difference]: Start difference. First operand 117 states and 137 transitions. Second operand has 14 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4)
[2024-11-08 16:07:00,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:07:00,749 INFO L93 Difference]: Finished difference Result 110 states and 127 transitions.
[2024-11-08 16:07:00,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-11-08 16:07:00,750 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 36
[2024-11-08 16:07:00,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:07:00,751 INFO L225 Difference]: With dead ends: 110
[2024-11-08 16:07:00,751 INFO L226 Difference]: Without dead ends: 110
[2024-11-08 16:07:00,751 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=208, Unknown=1, NotChecked=30, Total=306
[2024-11-08 16:07:00,754 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 278 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 77 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-08 16:07:00,754 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 167 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 221 Invalid, 0 Unknown, 77 Unchecked, 0.3s Time]
[2024-11-08 16:07:00,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states.
[2024-11-08 16:07:00,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110.
[2024-11-08 16:07:00,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 81 states have (on average 1.4691358024691359) internal successors, (119), 104 states have internal predecessors, (119), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-11-08 16:07:00,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 127 transitions.
[2024-11-08 16:07:00,759 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 127 transitions. Word has length 36
[2024-11-08 16:07:00,759 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:07:00,759 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 127 transitions.
[2024-11-08 16:07:00,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4)
[2024-11-08 16:07:00,760 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 127 transitions.
[2024-11-08 16:07:00,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2024-11-08 16:07:00,760 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:07:00,761 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:07:00,784 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0
[2024-11-08 16:07:00,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14
[2024-11-08 16:07:00,961 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:07:00,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:07:00,962 INFO L85 PathProgramCache]: Analyzing trace with hash -686108078, now seen corresponding path program 1 times
[2024-11-08 16:07:00,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:07:00,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593631202]
[2024-11-08 16:07:00,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:07:00,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:07:00,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:01,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-11-08 16:07:01,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:01,223 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2024-11-08 16:07:01,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:01,278 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2024-11-08 16:07:01,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:07:01,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593631202]
[2024-11-08 16:07:01,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593631202] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:07:01,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:07:01,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2024-11-08 16:07:01,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111153027]
[2024-11-08 16:07:01,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:07:01,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2024-11-08 16:07:01,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:07:01,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2024-11-08 16:07:01,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132
[2024-11-08 16:07:01,281 INFO L87 Difference]: Start difference. First operand 110 states and 127 transitions. Second operand has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-08 16:07:01,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:07:01,727 INFO L93 Difference]: Finished difference Result 132 states and 149 transitions.
[2024-11-08 16:07:01,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2024-11-08 16:07:01,727 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37
[2024-11-08 16:07:01,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:07:01,728 INFO L225 Difference]: With dead ends: 132
[2024-11-08 16:07:01,729 INFO L226 Difference]: Without dead ends: 132
[2024-11-08 16:07:01,729 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182
[2024-11-08 16:07:01,730 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 54 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2024-11-08 16:07:01,730 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 429 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2024-11-08 16:07:01,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states.
[2024-11-08 16:07:01,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 111.
[2024-11-08 16:07:01,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 82 states have (on average 1.4634146341463414) internal successors, (120), 105 states have internal predecessors, (120), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-11-08 16:07:01,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 128 transitions.
[2024-11-08 16:07:01,736 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 128 transitions. Word has length 37
[2024-11-08 16:07:01,736 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:07:01,736 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 128 transitions.
[2024-11-08 16:07:01,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-08 16:07:01,737 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 128 transitions.
[2024-11-08 16:07:01,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2024-11-08 16:07:01,738 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:07:01,738 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:07:01,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15
[2024-11-08 16:07:01,739 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:07:01,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:07:01,739 INFO L85 PathProgramCache]: Analyzing trace with hash -686108077, now seen corresponding path program 1 times
[2024-11-08 16:07:01,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:07:01,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660925644]
[2024-11-08 16:07:01,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:07:01,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:07:01,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:02,173 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-11-08 16:07:02,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:02,183 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2024-11-08 16:07:02,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:02,292 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 16:07:02,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:07:02,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660925644]
[2024-11-08 16:07:02,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660925644] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:07:02,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:07:02,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12
[2024-11-08 16:07:02,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507560029]
[2024-11-08 16:07:02,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:07:02,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2024-11-08 16:07:02,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:07:02,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2024-11-08 16:07:02,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156
[2024-11-08 16:07:02,295 INFO L87 Difference]: Start difference. First operand 111 states and 128 transitions. Second operand has 13 states, 12 states have (on average 2.75) internal successors, (33), 11 states have internal predecessors, (33), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-08 16:07:02,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:07:02,789 INFO L93 Difference]: Finished difference Result 152 states and 171 transitions.
[2024-11-08 16:07:02,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2024-11-08 16:07:02,790 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.75) internal successors, (33), 11 states have internal predecessors, (33), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37
[2024-11-08 16:07:02,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:07:02,792 INFO L225 Difference]: With dead ends: 152
[2024-11-08 16:07:02,792 INFO L226 Difference]: Without dead ends: 152
[2024-11-08 16:07:02,792 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210
[2024-11-08 16:07:02,793 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 81 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2024-11-08 16:07:02,793 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 529 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2024-11-08 16:07:02,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states.
[2024-11-08 16:07:02,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 130.
[2024-11-08 16:07:02,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 101 states have (on average 1.504950495049505) internal successors, (152), 124 states have internal predecessors, (152), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-11-08 16:07:02,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 160 transitions.
[2024-11-08 16:07:02,800 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 160 transitions. Word has length 37
[2024-11-08 16:07:02,800 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:07:02,800 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 160 transitions.
[2024-11-08 16:07:02,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.75) internal successors, (33), 11 states have internal predecessors, (33), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-08 16:07:02,801 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 160 transitions.
[2024-11-08 16:07:02,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40
[2024-11-08 16:07:02,802 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:07:02,802 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:07:02,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16
[2024-11-08 16:07:02,803 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:07:02,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:07:02,803 INFO L85 PathProgramCache]: Analyzing trace with hash 2075101459, now seen corresponding path program 1 times
[2024-11-08 16:07:02,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:07:02,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142972451]
[2024-11-08 16:07:02,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:07:02,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:07:02,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:02,892 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-11-08 16:07:02,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:02,902 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2024-11-08 16:07:02,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:02,912 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2024-11-08 16:07:02,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:07:02,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142972451]
[2024-11-08 16:07:02,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142972451] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:07:02,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:07:02,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-08 16:07:02,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183117983]
[2024-11-08 16:07:02,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:07:02,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 16:07:02,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:07:02,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 16:07:02,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 16:07:02,915 INFO L87 Difference]: Start difference. First operand 130 states and 160 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-08 16:07:03,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:07:03,015 INFO L93 Difference]: Finished difference Result 129 states and 159 transitions.
[2024-11-08 16:07:03,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-08 16:07:03,016 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 39
[2024-11-08 16:07:03,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:07:03,017 INFO L225 Difference]: With dead ends: 129
[2024-11-08 16:07:03,017 INFO L226 Difference]: Without dead ends: 129
[2024-11-08 16:07:03,017 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 16:07:03,018 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 24 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 16:07:03,018 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 137 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 16:07:03,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states.
[2024-11-08 16:07:03,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 119.
[2024-11-08 16:07:03,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 91 states have (on average 1.5494505494505495) internal successors, (141), 113 states have internal predecessors, (141), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-11-08 16:07:03,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 149 transitions.
[2024-11-08 16:07:03,023 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 149 transitions. Word has length 39
[2024-11-08 16:07:03,023 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:07:03,023 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 149 transitions.
[2024-11-08 16:07:03,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-08 16:07:03,025 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 149 transitions.
[2024-11-08 16:07:03,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2024-11-08 16:07:03,026 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:07:03,026 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:07:03,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17
[2024-11-08 16:07:03,027 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:07:03,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:07:03,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1307678228, now seen corresponding path program 1 times
[2024-11-08 16:07:03,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:07:03,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334139036]
[2024-11-08 16:07:03,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:07:03,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:07:03,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:03,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-11-08 16:07:03,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:03,838 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2024-11-08 16:07:03,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:03,921 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 16:07:03,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:07:03,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334139036]
[2024-11-08 16:07:03,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334139036] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:07:03,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:07:03,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15
[2024-11-08 16:07:03,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802570423]
[2024-11-08 16:07:03,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:07:03,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2024-11-08 16:07:03,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:07:03,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2024-11-08 16:07:03,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240
[2024-11-08 16:07:03,927 INFO L87 Difference]: Start difference. First operand 119 states and 149 transitions. Second operand has 16 states, 15 states have (on average 2.466666666666667) internal successors, (37), 14 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-08 16:07:04,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:07:04,548 INFO L93 Difference]: Finished difference Result 136 states and 166 transitions.
[2024-11-08 16:07:04,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2024-11-08 16:07:04,549 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.466666666666667) internal successors, (37), 14 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 41
[2024-11-08 16:07:04,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:07:04,550 INFO L225 Difference]: With dead ends: 136
[2024-11-08 16:07:04,550 INFO L226 Difference]: Without dead ends: 136
[2024-11-08 16:07:04,550 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462
[2024-11-08 16:07:04,551 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 59 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2024-11-08 16:07:04,551 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 567 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2024-11-08 16:07:04,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states.
[2024-11-08 16:07:04,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 122.
[2024-11-08 16:07:04,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 95 states have (on average 1.5263157894736843) internal successors, (145), 116 states have internal predecessors, (145), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-11-08 16:07:04,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 153 transitions.
[2024-11-08 16:07:04,556 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 153 transitions. Word has length 41
[2024-11-08 16:07:04,556 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:07:04,557 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 153 transitions.
[2024-11-08 16:07:04,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.466666666666667) internal successors, (37), 14 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-08 16:07:04,557 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 153 transitions.
[2024-11-08 16:07:04,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2024-11-08 16:07:04,558 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:07:04,558 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:07:04,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18
[2024-11-08 16:07:04,558 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:07:04,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:07:04,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1307678229, now seen corresponding path program 1 times
[2024-11-08 16:07:04,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:07:04,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429861843]
[2024-11-08 16:07:04,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:07:04,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:07:04,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:05,991 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-11-08 16:07:05,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:06,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2024-11-08 16:07:06,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:06,364 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 16:07:06,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:07:06,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429861843]
[2024-11-08 16:07:06,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429861843] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:07:06,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291848872]
[2024-11-08 16:07:06,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:07:06,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:07:06,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:07:06,367 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:07:06,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2024-11-08 16:07:06,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:06,971 INFO L255 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 90 conjuncts are in the unsatisfiable core
[2024-11-08 16:07:06,975 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:07:07,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2024-11-08 16:07:07,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2024-11-08 16:07:07,442 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size
[2024-11-08 16:07:07,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13
[2024-11-08 16:07:07,460 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2024-11-08 16:07:07,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11
[2024-11-08 16:07:07,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9
[2024-11-08 16:07:07,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1
[2024-11-08 16:07:08,046 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 46
[2024-11-08 16:07:08,049 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 50 treesize of output 34
[2024-11-08 16:07:08,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13
[2024-11-08 16:07:08,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3
[2024-11-08 16:07:08,201 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 16:07:08,202 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 16:07:08,569 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 64 treesize of output 48
[2024-11-08 16:07:08,575 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 52 treesize of output 36
[2024-11-08 16:07:08,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291848872] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:07:08,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 16:07:08,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36
[2024-11-08 16:07:08,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086220383]
[2024-11-08 16:07:08,997 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 16:07:08,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states
[2024-11-08 16:07:08,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:07:08,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2024-11-08 16:07:09,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=2025, Unknown=0, NotChecked=0, Total=2162
[2024-11-08 16:07:09,000 INFO L87 Difference]: Start difference. First operand 122 states and 153 transitions. Second operand has 37 states, 35 states have (on average 2.0) internal successors, (70), 31 states have internal predecessors, (70), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-11-08 16:07:12,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:07:12,215 INFO L93 Difference]: Finished difference Result 171 states and 202 transitions.
[2024-11-08 16:07:12,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states.
[2024-11-08 16:07:12,215 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 35 states have (on average 2.0) internal successors, (70), 31 states have internal predecessors, (70), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 41
[2024-11-08 16:07:12,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:07:12,216 INFO L225 Difference]: With dead ends: 171
[2024-11-08 16:07:12,216 INFO L226 Difference]: Without dead ends: 171
[2024-11-08 16:07:12,219 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 753 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=417, Invalid=5435, Unknown=0, NotChecked=0, Total=5852
[2024-11-08 16:07:12,219 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 242 mSDsluCounter, 1056 mSDsCounter, 0 mSdLazyCounter, 1728 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 1103 SdHoareTripleChecker+Invalid, 1746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time
[2024-11-08 16:07:12,220 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 1103 Invalid, 1746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1728 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time]
[2024-11-08 16:07:12,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states.
[2024-11-08 16:07:12,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 111.
[2024-11-08 16:07:12,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 86 states have (on average 1.4767441860465116) internal successors, (127), 106 states have internal predecessors, (127), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-08 16:07:12,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 133 transitions.
[2024-11-08 16:07:12,224 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 133 transitions. Word has length 41
[2024-11-08 16:07:12,225 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:07:12,225 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 133 transitions.
[2024-11-08 16:07:12,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 35 states have (on average 2.0) internal successors, (70), 31 states have internal predecessors, (70), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-11-08 16:07:12,225 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 133 transitions.
[2024-11-08 16:07:12,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44
[2024-11-08 16:07:12,226 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:07:12,226 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:07:12,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0
[2024-11-08 16:07:12,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:07:12,430 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:07:12,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:07:12,431 INFO L85 PathProgramCache]: Analyzing trace with hash 869258092, now seen corresponding path program 1 times
[2024-11-08 16:07:12,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:07:12,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581840551]
[2024-11-08 16:07:12,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:07:12,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:07:12,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:12,553 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-11-08 16:07:12,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:12,567 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2024-11-08 16:07:12,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:12,581 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30
[2024-11-08 16:07:12,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:12,595 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2024-11-08 16:07:12,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:07:12,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581840551]
[2024-11-08 16:07:12,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581840551] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:07:12,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306840178]
[2024-11-08 16:07:12,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:07:12,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:07:12,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:07:12,598 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:07:12,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2024-11-08 16:07:12,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:12,883 INFO L255 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-11-08 16:07:12,885 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:07:12,920 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2024-11-08 16:07:12,920 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 16:07:12,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306840178] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:07:12,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-08 16:07:12,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6
[2024-11-08 16:07:12,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443619043]
[2024-11-08 16:07:12,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:07:12,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 16:07:12,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:07:12,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 16:07:12,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-08 16:07:12,922 INFO L87 Difference]: Start difference. First operand 111 states and 133 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-08 16:07:12,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:07:12,941 INFO L93 Difference]: Finished difference Result 103 states and 121 transitions.
[2024-11-08 16:07:12,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-08 16:07:12,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 43
[2024-11-08 16:07:12,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:07:12,942 INFO L225 Difference]: With dead ends: 103
[2024-11-08 16:07:12,943 INFO L226 Difference]: Without dead ends: 103
[2024-11-08 16:07:12,943 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-08 16:07:12,944 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 0 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-08 16:07:12,944 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 142 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-08 16:07:12,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states.
[2024-11-08 16:07:12,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103.
[2024-11-08 16:07:12,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 81 states have (on average 1.4444444444444444) internal successors, (117), 99 states have internal predecessors, (117), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 16:07:12,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 121 transitions.
[2024-11-08 16:07:12,948 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 121 transitions. Word has length 43
[2024-11-08 16:07:12,948 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:07:12,948 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 121 transitions.
[2024-11-08 16:07:12,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-08 16:07:12,949 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 121 transitions.
[2024-11-08 16:07:12,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43
[2024-11-08 16:07:12,949 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:07:12,950 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:07:12,973 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0
[2024-11-08 16:07:13,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20
[2024-11-08 16:07:13,155 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:07:13,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:07:13,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1883305551, now seen corresponding path program 1 times
[2024-11-08 16:07:13,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:07:13,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864625472]
[2024-11-08 16:07:13,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:07:13,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:07:13,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:13,488 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-11-08 16:07:13,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:13,499 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2024-11-08 16:07:13,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:13,559 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 16:07:13,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:07:13,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864625472]
[2024-11-08 16:07:13,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864625472] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:07:13,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:07:13,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2024-11-08 16:07:13,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202693406]
[2024-11-08 16:07:13,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:07:13,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2024-11-08 16:07:13,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:07:13,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2024-11-08 16:07:13,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132
[2024-11-08 16:07:13,562 INFO L87 Difference]: Start difference. First operand 103 states and 121 transitions. Second operand has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-08 16:07:13,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:07:13,824 INFO L93 Difference]: Finished difference Result 102 states and 120 transitions.
[2024-11-08 16:07:13,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2024-11-08 16:07:13,826 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 42
[2024-11-08 16:07:13,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:07:13,827 INFO L225 Difference]: With dead ends: 102
[2024-11-08 16:07:13,827 INFO L226 Difference]: Without dead ends: 102
[2024-11-08 16:07:13,827 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182
[2024-11-08 16:07:13,828 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 63 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-08 16:07:13,828 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 449 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-08 16:07:13,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states.
[2024-11-08 16:07:13,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102.
[2024-11-08 16:07:13,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 81 states have (on average 1.4320987654320987) internal successors, (116), 98 states have internal predecessors, (116), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 16:07:13,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 120 transitions.
[2024-11-08 16:07:13,835 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 120 transitions. Word has length 42
[2024-11-08 16:07:13,835 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:07:13,835 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 120 transitions.
[2024-11-08 16:07:13,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-08 16:07:13,835 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 120 transitions.
[2024-11-08 16:07:13,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44
[2024-11-08 16:07:13,836 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:07:13,836 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:07:13,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21
[2024-11-08 16:07:13,836 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:07:13,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:07:13,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1747069964, now seen corresponding path program 1 times
[2024-11-08 16:07:13,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:07:13,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641531273]
[2024-11-08 16:07:13,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:07:13,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:07:13,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:14,072 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-11-08 16:07:14,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:14,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2024-11-08 16:07:14,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:14,138 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 16:07:14,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:07:14,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641531273]
[2024-11-08 16:07:14,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641531273] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:07:14,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:07:14,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2024-11-08 16:07:14,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100647216]
[2024-11-08 16:07:14,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:07:14,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2024-11-08 16:07:14,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:07:14,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2024-11-08 16:07:14,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132
[2024-11-08 16:07:14,141 INFO L87 Difference]: Start difference. First operand 102 states and 120 transitions. Second operand has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-08 16:07:14,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:07:14,478 INFO L93 Difference]: Finished difference Result 121 states and 129 transitions.
[2024-11-08 16:07:14,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2024-11-08 16:07:14,479 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43
[2024-11-08 16:07:14,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:07:14,480 INFO L225 Difference]: With dead ends: 121
[2024-11-08 16:07:14,480 INFO L226 Difference]: Without dead ends: 121
[2024-11-08 16:07:14,480 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182
[2024-11-08 16:07:14,481 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 60 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-08 16:07:14,481 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 512 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-08 16:07:14,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states.
[2024-11-08 16:07:14,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 105.
[2024-11-08 16:07:14,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 84 states have (on average 1.4166666666666667) internal successors, (119), 101 states have internal predecessors, (119), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 16:07:14,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 123 transitions.
[2024-11-08 16:07:14,484 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 123 transitions. Word has length 43
[2024-11-08 16:07:14,484 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:07:14,484 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 123 transitions.
[2024-11-08 16:07:14,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-08 16:07:14,485 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 123 transitions.
[2024-11-08 16:07:14,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2024-11-08 16:07:14,485 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:07:14,486 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:07:14,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22
[2024-11-08 16:07:14,486 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:07:14,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:07:14,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1688765342, now seen corresponding path program 1 times
[2024-11-08 16:07:14,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:07:14,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895602038]
[2024-11-08 16:07:14,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:07:14,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:07:14,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:15,146 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-11-08 16:07:15,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:15,211 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2024-11-08 16:07:15,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:15,282 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 16:07:15,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:07:15,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895602038]
[2024-11-08 16:07:15,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895602038] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:07:15,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289470593]
[2024-11-08 16:07:15,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:07:15,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:07:15,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:07:15,285 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:07:15,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2024-11-08 16:07:15,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:15,610 INFO L255 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 56 conjuncts are in the unsatisfiable core
[2024-11-08 16:07:15,613 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:07:15,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2024-11-08 16:07:16,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2024-11-08 16:07:16,129 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
[2024-11-08 16:07:16,220 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 16:07:16,220 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 16:07:16,407 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 18
[2024-11-08 16:07:16,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14
[2024-11-08 16:07:16,590 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-11-08 16:07:16,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289470593] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 16:07:16,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 16:07:16,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 12] total 36
[2024-11-08 16:07:16,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122362234]
[2024-11-08 16:07:16,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 16:07:16,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states
[2024-11-08 16:07:16,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:07:16,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2024-11-08 16:07:16,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1222, Unknown=0, NotChecked=0, Total=1332
[2024-11-08 16:07:16,592 INFO L87 Difference]: Start difference. First operand 105 states and 123 transitions. Second operand has 37 states, 35 states have (on average 2.3714285714285714) internal successors, (83), 32 states have internal predecessors, (83), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5)
[2024-11-08 16:07:17,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:07:17,289 INFO L93 Difference]: Finished difference Result 119 states and 137 transitions.
[2024-11-08 16:07:17,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2024-11-08 16:07:17,290 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 35 states have (on average 2.3714285714285714) internal successors, (83), 32 states have internal predecessors, (83), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 44
[2024-11-08 16:07:17,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:07:17,291 INFO L225 Difference]: With dead ends: 119
[2024-11-08 16:07:17,291 INFO L226 Difference]: Without dead ends: 119
[2024-11-08 16:07:17,292 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 59 SyntacticMatches, 12 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=169, Invalid=1723, Unknown=0, NotChecked=0, Total=1892
[2024-11-08 16:07:17,293 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 177 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2024-11-08 16:07:17,293 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 642 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2024-11-08 16:07:17,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states.
[2024-11-08 16:07:17,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 106.
[2024-11-08 16:07:17,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 85 states have (on average 1.411764705882353) internal successors, (120), 102 states have internal predecessors, (120), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 16:07:17,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 124 transitions.
[2024-11-08 16:07:17,296 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 124 transitions. Word has length 44
[2024-11-08 16:07:17,297 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:07:17,297 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 124 transitions.
[2024-11-08 16:07:17,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 35 states have (on average 2.3714285714285714) internal successors, (83), 32 states have internal predecessors, (83), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5)
[2024-11-08 16:07:17,297 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 124 transitions.
[2024-11-08 16:07:17,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2024-11-08 16:07:17,298 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:07:17,298 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:07:17,320 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0
[2024-11-08 16:07:17,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23
[2024-11-08 16:07:17,499 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:07:17,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:07:17,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1675406065, now seen corresponding path program 1 times
[2024-11-08 16:07:17,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:07:17,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174497590]
[2024-11-08 16:07:17,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:07:17,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:07:17,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:17,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-11-08 16:07:17,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:17,639 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2024-11-08 16:07:17,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:17,650 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2024-11-08 16:07:17,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:07:17,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174497590]
[2024-11-08 16:07:17,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174497590] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:07:17,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:07:17,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-08 16:07:17,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287168312]
[2024-11-08 16:07:17,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:07:17,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-08 16:07:17,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:07:17,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-08 16:07:17,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2024-11-08 16:07:17,653 INFO L87 Difference]: Start difference. First operand 106 states and 124 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-08 16:07:17,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:07:17,823 INFO L93 Difference]: Finished difference Result 105 states and 123 transitions.
[2024-11-08 16:07:17,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-08 16:07:17,824 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 44
[2024-11-08 16:07:17,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:07:17,825 INFO L225 Difference]: With dead ends: 105
[2024-11-08 16:07:17,825 INFO L226 Difference]: Without dead ends: 105
[2024-11-08 16:07:17,825 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2024-11-08 16:07:17,826 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 13 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-08 16:07:17,828 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 210 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-08 16:07:17,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states.
[2024-11-08 16:07:17,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105.
[2024-11-08 16:07:17,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 85 states have (on average 1.4) internal successors, (119), 101 states have internal predecessors, (119), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 16:07:17,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 123 transitions.
[2024-11-08 16:07:17,832 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 123 transitions. Word has length 44
[2024-11-08 16:07:17,833 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:07:17,833 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 123 transitions.
[2024-11-08 16:07:17,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-08 16:07:17,833 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 123 transitions.
[2024-11-08 16:07:17,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2024-11-08 16:07:17,834 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:07:17,834 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:07:17,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24
[2024-11-08 16:07:17,835 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:07:17,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:07:17,835 INFO L85 PathProgramCache]: Analyzing trace with hash 397980567, now seen corresponding path program 1 times
[2024-11-08 16:07:17,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:07:17,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340046123]
[2024-11-08 16:07:17,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:07:17,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:07:17,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:18,239 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-11-08 16:07:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:18,254 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2024-11-08 16:07:18,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:18,328 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 16:07:18,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:07:18,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340046123]
[2024-11-08 16:07:18,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340046123] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:07:18,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273823024]
[2024-11-08 16:07:18,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:07:18,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:07:18,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:07:18,331 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:07:18,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2024-11-08 16:07:18,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:18,662 INFO L255 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 8 conjuncts are in the unsatisfiable core
[2024-11-08 16:07:18,664 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:07:18,813 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 16:07:18,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9
[2024-11-08 16:07:18,816 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2024-11-08 16:07:18,817 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 16:07:18,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273823024] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:07:18,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-08 16:07:18,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14] total 17
[2024-11-08 16:07:18,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618956043]
[2024-11-08 16:07:18,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:07:18,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-08 16:07:18,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:07:18,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-08 16:07:18,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306
[2024-11-08 16:07:18,819 INFO L87 Difference]: Start difference. First operand 105 states and 123 transitions. Second operand has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-08 16:07:18,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:07:18,986 INFO L93 Difference]: Finished difference Result 104 states and 122 transitions.
[2024-11-08 16:07:18,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-08 16:07:18,987 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 45
[2024-11-08 16:07:18,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:07:18,988 INFO L225 Difference]: With dead ends: 104
[2024-11-08 16:07:18,988 INFO L226 Difference]: Without dead ends: 104
[2024-11-08 16:07:18,989 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420
[2024-11-08 16:07:18,989 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 81 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 16:07:18,990 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 145 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 16:07:18,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states.
[2024-11-08 16:07:18,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104.
[2024-11-08 16:07:18,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 85 states have (on average 1.388235294117647) internal successors, (118), 100 states have internal predecessors, (118), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 16:07:18,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 122 transitions.
[2024-11-08 16:07:18,994 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 122 transitions. Word has length 45
[2024-11-08 16:07:18,994 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:07:18,994 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 122 transitions.
[2024-11-08 16:07:18,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-08 16:07:18,995 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 122 transitions.
[2024-11-08 16:07:18,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47
[2024-11-08 16:07:18,995 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:07:18,996 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:07:19,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0
[2024-11-08 16:07:19,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25
[2024-11-08 16:07:19,196 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:07:19,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:07:19,197 INFO L85 PathProgramCache]: Analyzing trace with hash -594140511, now seen corresponding path program 1 times
[2024-11-08 16:07:19,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:07:19,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900013871]
[2024-11-08 16:07:19,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:07:19,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:07:19,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:19,436 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-11-08 16:07:19,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:19,450 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2024-11-08 16:07:19,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:19,464 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2024-11-08 16:07:19,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:07:19,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900013871]
[2024-11-08 16:07:19,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900013871] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:07:19,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:07:19,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2024-11-08 16:07:19,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776058146]
[2024-11-08 16:07:19,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:07:19,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2024-11-08 16:07:19,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:07:19,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2024-11-08 16:07:19,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72
[2024-11-08 16:07:19,467 INFO L87 Difference]: Start difference. First operand 104 states and 122 transitions. Second operand has 9 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-08 16:07:19,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:07:19,686 INFO L93 Difference]: Finished difference Result 103 states and 120 transitions.
[2024-11-08 16:07:19,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-08 16:07:19,687 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 46
[2024-11-08 16:07:19,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:07:19,688 INFO L225 Difference]: With dead ends: 103
[2024-11-08 16:07:19,688 INFO L226 Difference]: Without dead ends: 103
[2024-11-08 16:07:19,688 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132
[2024-11-08 16:07:19,689 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 67 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-08 16:07:19,689 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 186 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-08 16:07:19,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states.
[2024-11-08 16:07:19,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103.
[2024-11-08 16:07:19,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 85 states have (on average 1.3647058823529412) internal successors, (116), 99 states have internal predecessors, (116), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 16:07:19,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 120 transitions.
[2024-11-08 16:07:19,696 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 120 transitions. Word has length 46
[2024-11-08 16:07:19,697 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:07:19,697 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 120 transitions.
[2024-11-08 16:07:19,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-08 16:07:19,697 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 120 transitions.
[2024-11-08 16:07:19,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48
[2024-11-08 16:07:19,697 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:07:19,699 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:07:19,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26
[2024-11-08 16:07:19,700 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:07:19,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:07:19,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1238486597, now seen corresponding path program 1 times
[2024-11-08 16:07:19,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:07:19,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397013916]
[2024-11-08 16:07:19,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:07:19,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:07:19,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:20,317 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-11-08 16:07:20,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:20,326 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2024-11-08 16:07:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:20,459 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 16:07:20,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:07:20,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397013916]
[2024-11-08 16:07:20,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397013916] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:07:20,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:07:20,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17
[2024-11-08 16:07:20,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655184042]
[2024-11-08 16:07:20,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:07:20,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2024-11-08 16:07:20,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:07:20,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2024-11-08 16:07:20,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306
[2024-11-08 16:07:20,462 INFO L87 Difference]: Start difference. First operand 103 states and 120 transitions. Second operand has 18 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-08 16:07:21,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:07:21,045 INFO L93 Difference]: Finished difference Result 113 states and 130 transitions.
[2024-11-08 16:07:21,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2024-11-08 16:07:21,045 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 47
[2024-11-08 16:07:21,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:07:21,046 INFO L225 Difference]: With dead ends: 113
[2024-11-08 16:07:21,046 INFO L226 Difference]: Without dead ends: 113
[2024-11-08 16:07:21,046 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506
[2024-11-08 16:07:21,046 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 30 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2024-11-08 16:07:21,047 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 465 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2024-11-08 16:07:21,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states.
[2024-11-08 16:07:21,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 106.
[2024-11-08 16:07:21,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 88 states have (on average 1.3636363636363635) internal successors, (120), 102 states have internal predecessors, (120), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 16:07:21,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 124 transitions.
[2024-11-08 16:07:21,050 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 124 transitions. Word has length 47
[2024-11-08 16:07:21,051 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:07:21,051 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 124 transitions.
[2024-11-08 16:07:21,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-08 16:07:21,051 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 124 transitions.
[2024-11-08 16:07:21,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48
[2024-11-08 16:07:21,052 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:07:21,052 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:07:21,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27
[2024-11-08 16:07:21,052 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:07:21,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:07:21,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1238486596, now seen corresponding path program 1 times
[2024-11-08 16:07:21,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:07:21,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073833665]
[2024-11-08 16:07:21,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:07:21,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:07:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:21,539 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-11-08 16:07:21,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:21,547 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2024-11-08 16:07:21,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:21,632 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 16:07:21,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:07:21,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073833665]
[2024-11-08 16:07:21,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073833665] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:07:21,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:07:21,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12
[2024-11-08 16:07:21,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191346464]
[2024-11-08 16:07:21,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:07:21,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2024-11-08 16:07:21,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:07:21,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2024-11-08 16:07:21,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156
[2024-11-08 16:07:21,635 INFO L87 Difference]: Start difference. First operand 106 states and 124 transitions. Second operand has 13 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-08 16:07:22,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:07:22,086 INFO L93 Difference]: Finished difference Result 118 states and 126 transitions.
[2024-11-08 16:07:22,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2024-11-08 16:07:22,087 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 47
[2024-11-08 16:07:22,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:07:22,087 INFO L225 Difference]: With dead ends: 118
[2024-11-08 16:07:22,087 INFO L226 Difference]: Without dead ends: 118
[2024-11-08 16:07:22,088 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240
[2024-11-08 16:07:22,088 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 49 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2024-11-08 16:07:22,089 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 488 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2024-11-08 16:07:22,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states.
[2024-11-08 16:07:22,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 106.
[2024-11-08 16:07:22,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 88 states have (on average 1.3409090909090908) internal successors, (118), 102 states have internal predecessors, (118), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 16:07:22,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 122 transitions.
[2024-11-08 16:07:22,093 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 122 transitions. Word has length 47
[2024-11-08 16:07:22,093 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:07:22,093 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 122 transitions.
[2024-11-08 16:07:22,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-08 16:07:22,094 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 122 transitions.
[2024-11-08 16:07:22,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49
[2024-11-08 16:07:22,094 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:07:22,094 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:07:22,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28
[2024-11-08 16:07:22,095 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:07:22,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:07:22,095 INFO L85 PathProgramCache]: Analyzing trace with hash 2129406099, now seen corresponding path program 1 times
[2024-11-08 16:07:22,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:07:22,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581817342]
[2024-11-08 16:07:22,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:07:22,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:07:22,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:22,228 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-11-08 16:07:22,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:22,238 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2024-11-08 16:07:22,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:22,248 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2024-11-08 16:07:22,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:07:22,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581817342]
[2024-11-08 16:07:22,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581817342] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:07:22,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:07:22,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-08 16:07:22,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684816834]
[2024-11-08 16:07:22,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:07:22,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-08 16:07:22,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:07:22,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-08 16:07:22,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-08 16:07:22,251 INFO L87 Difference]: Start difference. First operand 106 states and 122 transitions. Second operand has 5 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-08 16:07:22,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:07:22,378 INFO L93 Difference]: Finished difference Result 104 states and 119 transitions.
[2024-11-08 16:07:22,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-08 16:07:22,379 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 48
[2024-11-08 16:07:22,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:07:22,380 INFO L225 Difference]: With dead ends: 104
[2024-11-08 16:07:22,380 INFO L226 Difference]: Without dead ends: 104
[2024-11-08 16:07:22,380 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-08 16:07:22,381 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 54 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 16:07:22,382 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 137 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 16:07:22,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states.
[2024-11-08 16:07:22,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104.
[2024-11-08 16:07:22,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 88 states have (on average 1.3068181818181819) internal successors, (115), 100 states have internal predecessors, (115), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 16:07:22,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 119 transitions.
[2024-11-08 16:07:22,386 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 119 transitions. Word has length 48
[2024-11-08 16:07:22,386 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:07:22,386 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 119 transitions.
[2024-11-08 16:07:22,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-08 16:07:22,387 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 119 transitions.
[2024-11-08 16:07:22,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51
[2024-11-08 16:07:22,387 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:07:22,387 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:07:22,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29
[2024-11-08 16:07:22,387 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:07:22,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:07:22,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1985075993, now seen corresponding path program 1 times
[2024-11-08 16:07:22,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:07:22,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309034492]
[2024-11-08 16:07:22,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:07:22,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:07:22,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:23,656 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-11-08 16:07:23,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:23,821 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2024-11-08 16:07:23,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:23,954 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 16:07:23,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:07:23,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309034492]
[2024-11-08 16:07:23,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309034492] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:07:23,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017177671]
[2024-11-08 16:07:23,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:07:23,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:07:23,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:07:23,957 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:07:23,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2024-11-08 16:07:24,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:24,319 INFO L255 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 91 conjuncts are in the unsatisfiable core
[2024-11-08 16:07:24,322 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:07:24,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2024-11-08 16:07:24,613 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2024-11-08 16:07:24,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11
[2024-11-08 16:07:24,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-11-08 16:07:24,982 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 16:07:24,983 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 31 treesize of output 15
[2024-11-08 16:07:25,094 INFO L349 Elim1Store]: treesize reduction 33, result has 25.0 percent of original size
[2024-11-08 16:07:25,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 23
[2024-11-08 16:07:25,663 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 7 treesize of output 3
[2024-11-08 16:07:25,752 INFO L349 Elim1Store]: treesize reduction 29, result has 21.6 percent of original size
[2024-11-08 16:07:25,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 26
[2024-11-08 16:07:25,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7
[2024-11-08 16:07:25,950 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 16:07:25,950 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 16:07:25,962 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size
[2024-11-08 16:07:25,963 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 12 treesize of output 11
[2024-11-08 16:07:26,238 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 34 treesize of output 22
[2024-11-08 16:07:26,242 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 18
[2024-11-08 16:07:26,676 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 254 treesize of output 246
[2024-11-08 16:07:26,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017177671] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:07:26,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 16:07:26,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27] total 46
[2024-11-08 16:07:26,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044150039]
[2024-11-08 16:07:26,975 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 16:07:26,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states
[2024-11-08 16:07:26,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:07:26,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants.
[2024-11-08 16:07:26,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=3208, Unknown=0, NotChecked=0, Total=3422
[2024-11-08 16:07:26,977 INFO L87 Difference]: Start difference. First operand 104 states and 119 transitions. Second operand has 47 states, 45 states have (on average 1.711111111111111) internal successors, (77), 41 states have internal predecessors, (77), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-11-08 16:07:28,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:07:28,306 INFO L93 Difference]: Finished difference Result 112 states and 128 transitions.
[2024-11-08 16:07:28,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states.
[2024-11-08 16:07:28,307 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 45 states have (on average 1.711111111111111) internal successors, (77), 41 states have internal predecessors, (77), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 50
[2024-11-08 16:07:28,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:07:28,308 INFO L225 Difference]: With dead ends: 112
[2024-11-08 16:07:28,308 INFO L226 Difference]: Without dead ends: 112
[2024-11-08 16:07:28,309 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1001 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=371, Invalid=4741, Unknown=0, NotChecked=0, Total=5112
[2024-11-08 16:07:28,310 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 107 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 1231 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 1234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2024-11-08 16:07:28,310 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 944 Invalid, 1234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1231 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2024-11-08 16:07:28,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states.
[2024-11-08 16:07:28,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 107.
[2024-11-08 16:07:28,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 91 states have (on average 1.3076923076923077) internal successors, (119), 103 states have internal predecessors, (119), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 16:07:28,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 123 transitions.
[2024-11-08 16:07:28,313 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 123 transitions. Word has length 50
[2024-11-08 16:07:28,313 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:07:28,313 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 123 transitions.
[2024-11-08 16:07:28,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 45 states have (on average 1.711111111111111) internal successors, (77), 41 states have internal predecessors, (77), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-11-08 16:07:28,314 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 123 transitions.
[2024-11-08 16:07:28,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51
[2024-11-08 16:07:28,314 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:07:28,315 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:07:28,336 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0
[2024-11-08 16:07:28,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30
[2024-11-08 16:07:28,515 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:07:28,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:07:28,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1985075992, now seen corresponding path program 1 times
[2024-11-08 16:07:28,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:07:28,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37471000]
[2024-11-08 16:07:28,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:07:28,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:07:28,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:30,510 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-11-08 16:07:30,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:30,697 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2024-11-08 16:07:30,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:31,085 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 16:07:31,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:07:31,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37471000]
[2024-11-08 16:07:31,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37471000] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:07:31,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604555733]
[2024-11-08 16:07:31,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:07:31,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:07:31,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:07:31,090 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:07:31,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2024-11-08 16:07:31,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:31,796 INFO L255 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 123 conjuncts are in the unsatisfiable core
[2024-11-08 16:07:31,802 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:07:31,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2024-11-08 16:07:32,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2024-11-08 16:07:32,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-11-08 16:07:32,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11
[2024-11-08 16:07:32,472 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2024-11-08 16:07:32,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11
[2024-11-08 16:07:32,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11
[2024-11-08 16:07:32,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18
[2024-11-08 16:07:32,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-11-08 16:07:33,122 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2024-11-08 16:07:33,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21
[2024-11-08 16:07:33,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11
[2024-11-08 16:07:33,238 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size
[2024-11-08 16:07:33,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 23
[2024-11-08 16:07:33,267 INFO L349 Elim1Store]: treesize reduction 36, result has 35.7 percent of original size
[2024-11-08 16:07:33,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 26
[2024-11-08 16:07:34,181 INFO L349 Elim1Store]: treesize reduction 29, result has 21.6 percent of original size
[2024-11-08 16:07:34,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 97 treesize of output 50
[2024-11-08 16:07:34,192 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-08 16:07:34,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 18
[2024-11-08 16:07:34,465 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
[2024-11-08 16:07:34,481 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 16:07:34,481 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 16:07:35,127 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 92 treesize of output 72
[2024-11-08 16:07:35,130 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 76 treesize of output 56
[2024-11-08 16:07:35,308 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ 4 |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset|))) (and (forall ((v_ArrVal_3995 (Array Int Int))) (or (not (= (select v_ArrVal_3995 .cse0) 0)) (< 0 (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| v_ArrVal_3995) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|) 4) 1)))) (forall ((v_ArrVal_3995 (Array Int Int))) (or (not (= (select v_ArrVal_3995 .cse0) 0)) (< (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| v_ArrVal_3995) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|) 4) 3) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| (store (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) .cse0 |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|)) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|) 4))))))) is different from false
[2024-11-08 16:07:35,790 INFO L349 Elim1Store]: treesize reduction 19, result has 62.0 percent of original size
[2024-11-08 16:07:35,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 43
[2024-11-08 16:07:35,807 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-08 16:07:35,807 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 48 treesize of output 49
[2024-11-08 16:07:35,846 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-08 16:07:35,846 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 18 treesize of output 20
[2024-11-08 16:07:35,907 INFO L349 Elim1Store]: treesize reduction 19, result has 62.0 percent of original size
[2024-11-08 16:07:35,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 112 treesize of output 115
[2024-11-08 16:07:35,931 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-08 16:07:35,931 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 192 treesize of output 193
[2024-11-08 16:07:35,954 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-08 16:07:35,954 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 92 treesize of output 94
[2024-11-08 16:07:37,214 INFO L349 Elim1Store]: treesize reduction 30, result has 61.0 percent of original size
[2024-11-08 16:07:37,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 149 treesize of output 132
[2024-11-08 16:07:37,253 INFO L349 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size
[2024-11-08 16:07:37,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 179 treesize of output 163
[2024-11-08 16:07:37,290 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-08 16:07:37,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 153 treesize of output 182
[2024-11-08 16:07:37,403 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-08 16:07:37,403 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 43 treesize of output 35
[2024-11-08 16:07:37,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604555733] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:07:37,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 16:07:37,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27] total 51
[2024-11-08 16:07:37,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226531072]
[2024-11-08 16:07:37,573 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 16:07:37,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states
[2024-11-08 16:07:37,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:07:37,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants.
[2024-11-08 16:07:37,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=4329, Unknown=1, NotChecked=132, Total=4692
[2024-11-08 16:07:37,576 INFO L87 Difference]: Start difference. First operand 107 states and 123 transitions. Second operand has 52 states, 50 states have (on average 1.74) internal successors, (87), 46 states have internal predecessors, (87), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-11-08 16:07:40,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:07:40,556 INFO L93 Difference]: Finished difference Result 112 states and 127 transitions.
[2024-11-08 16:07:40,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states.
[2024-11-08 16:07:40,557 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 50 states have (on average 1.74) internal successors, (87), 46 states have internal predecessors, (87), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 50
[2024-11-08 16:07:40,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:07:40,558 INFO L225 Difference]: With dead ends: 112
[2024-11-08 16:07:40,558 INFO L226 Difference]: Without dead ends: 112
[2024-11-08 16:07:40,560 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 88 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1748 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=452, Invalid=7383, Unknown=1, NotChecked=174, Total=8010
[2024-11-08 16:07:40,560 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 124 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 1449 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 1456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time
[2024-11-08 16:07:40,560 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 889 Invalid, 1456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1449 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time]
[2024-11-08 16:07:40,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states.
[2024-11-08 16:07:40,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 107.
[2024-11-08 16:07:40,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 91 states have (on average 1.2967032967032968) internal successors, (118), 103 states have internal predecessors, (118), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 16:07:40,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 122 transitions.
[2024-11-08 16:07:40,564 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 122 transitions. Word has length 50
[2024-11-08 16:07:40,564 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:07:40,565 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 122 transitions.
[2024-11-08 16:07:40,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 50 states have (on average 1.74) internal successors, (87), 46 states have internal predecessors, (87), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-11-08 16:07:40,565 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 122 transitions.
[2024-11-08 16:07:40,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51
[2024-11-08 16:07:40,566 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:07:40,566 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:07:40,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0
[2024-11-08 16:07:40,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:07:40,767 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:07:40,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:07:40,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1954830911, now seen corresponding path program 1 times
[2024-11-08 16:07:40,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:07:40,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82150780]
[2024-11-08 16:07:40,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:07:40,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:07:40,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:40,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-11-08 16:07:40,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:40,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2024-11-08 16:07:40,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:40,963 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2024-11-08 16:07:40,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:07:40,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82150780]
[2024-11-08 16:07:40,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82150780] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:07:40,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340673362]
[2024-11-08 16:07:40,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:07:40,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:07:40,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:07:40,966 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:07:40,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2024-11-08 16:07:41,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:41,359 INFO L255 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-11-08 16:07:41,360 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:07:41,453 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2024-11-08 16:07:41,456 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 16:07:41,541 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2024-11-08 16:07:41,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340673362] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 16:07:41,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 16:07:41,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 10
[2024-11-08 16:07:41,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792227364]
[2024-11-08 16:07:41,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 16:07:41,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-11-08 16:07:41,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:07:41,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-11-08 16:07:41,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90
[2024-11-08 16:07:41,543 INFO L87 Difference]: Start difference. First operand 107 states and 122 transitions. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 9 states have internal predecessors, (78), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2024-11-08 16:07:41,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:07:41,678 INFO L93 Difference]: Finished difference Result 172 states and 195 transitions.
[2024-11-08 16:07:41,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-11-08 16:07:41,678 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 9 states have internal predecessors, (78), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 50
[2024-11-08 16:07:41,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:07:41,680 INFO L225 Difference]: With dead ends: 172
[2024-11-08 16:07:41,682 INFO L226 Difference]: Without dead ends: 172
[2024-11-08 16:07:41,682 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 98 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110
[2024-11-08 16:07:41,683 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 189 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 16:07:41,683 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 300 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 16:07:41,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states.
[2024-11-08 16:07:41,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 117.
[2024-11-08 16:07:41,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 101 states have (on average 1.2475247524752475) internal successors, (126), 113 states have internal predecessors, (126), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 16:07:41,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 130 transitions.
[2024-11-08 16:07:41,688 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 130 transitions. Word has length 50
[2024-11-08 16:07:41,688 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:07:41,688 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 130 transitions.
[2024-11-08 16:07:41,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 9 states have internal predecessors, (78), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2024-11-08 16:07:41,688 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 130 transitions.
[2024-11-08 16:07:41,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51
[2024-11-08 16:07:41,689 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:07:41,689 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:07:41,712 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0
[2024-11-08 16:07:41,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:07:41,890 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:07:41,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:07:41,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1952986649, now seen corresponding path program 1 times
[2024-11-08 16:07:41,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:07:41,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35937105]
[2024-11-08 16:07:41,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:07:41,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:07:41,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:43,599 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-11-08 16:07:43,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:43,758 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2024-11-08 16:07:43,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:43,904 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 16:07:43,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:07:43,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35937105]
[2024-11-08 16:07:43,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35937105] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:07:43,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300576618]
[2024-11-08 16:07:43,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:07:43,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:07:43,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:07:43,905 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:07:43,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2024-11-08 16:07:44,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:07:44,276 INFO L255 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 81 conjuncts are in the unsatisfiable core
[2024-11-08 16:07:44,279 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:07:44,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2024-11-08 16:07:44,642 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2024-11-08 16:07:44,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11
[2024-11-08 16:07:44,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2024-11-08 16:07:45,232 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-08 16:07:45,233 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 34 treesize of output 36
[2024-11-08 16:07:45,650 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 29 treesize of output 21
[2024-11-08 16:07:45,844 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 26 treesize of output 13
[2024-11-08 16:07:45,935 INFO L349 Elim1Store]: treesize reduction 20, result has 37.5 percent of original size
[2024-11-08 16:07:45,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 28
[2024-11-08 16:07:46,145 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-08 16:07:46,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12
[2024-11-08 16:07:46,149 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 16:07:46,149 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 16:07:47,074 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 8 treesize of output 4
[2024-11-08 16:07:47,422 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 44 treesize of output 34
[2024-11-08 16:07:47,429 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-08 16:07:47,429 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 50 treesize of output 46
[2024-11-08 16:08:51,949 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-08 16:08:51,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 109 treesize of output 128
[2024-11-08 16:08:51,968 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-08 16:08:51,968 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 146 treesize of output 144
[2024-11-08 16:08:52,110 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 20 treesize of output 18
[2024-11-08 16:08:52,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4
[2024-11-08 16:08:52,949 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 16:08:52,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300576618] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 16:08:52,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 16:08:52,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 26] total 78
[2024-11-08 16:08:52,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007337216]
[2024-11-08 16:08:52,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 16:08:52,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 79 states
[2024-11-08 16:08:52,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:08:52,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants.
[2024-11-08 16:08:52,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=5848, Unknown=16, NotChecked=0, Total=6162
[2024-11-08 16:08:52,953 INFO L87 Difference]: Start difference. First operand 117 states and 130 transitions. Second operand has 79 states, 77 states have (on average 1.7532467532467533) internal successors, (135), 70 states have internal predecessors, (135), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2024-11-08 16:08:55,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:08:55,963 INFO L93 Difference]: Finished difference Result 112 states and 124 transitions.
[2024-11-08 16:08:55,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states.
[2024-11-08 16:08:55,964 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 77 states have (on average 1.7532467532467533) internal successors, (135), 70 states have internal predecessors, (135), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 50
[2024-11-08 16:08:55,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:08:55,964 INFO L225 Difference]: With dead ends: 112
[2024-11-08 16:08:55,964 INFO L226 Difference]: Without dead ends: 110
[2024-11-08 16:08:55,967 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2156 ImplicationChecksByTransitivity, 69.8s TimeCoverageRelationStatistics Valid=579, Invalid=9305, Unknown=16, NotChecked=0, Total=9900
[2024-11-08 16:08:55,967 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 204 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 1880 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 1897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time
[2024-11-08 16:08:55,968 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 1036 Invalid, 1897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1880 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time]
[2024-11-08 16:08:55,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states.
[2024-11-08 16:08:55,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110.
[2024-11-08 16:08:55,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 94 states have (on average 1.2553191489361701) internal successors, (118), 106 states have internal predecessors, (118), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 16:08:55,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 122 transitions.
[2024-11-08 16:08:55,973 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 122 transitions. Word has length 50
[2024-11-08 16:08:55,973 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:08:55,973 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 122 transitions.
[2024-11-08 16:08:55,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 77 states have (on average 1.7532467532467533) internal successors, (135), 70 states have internal predecessors, (135), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2024-11-08 16:08:55,974 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 122 transitions.
[2024-11-08 16:08:55,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57
[2024-11-08 16:08:55,974 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:08:55,974 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:08:55,997 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0
[2024-11-08 16:08:56,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:08:56,175 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:08:56,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:08:56,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1498211727, now seen corresponding path program 1 times
[2024-11-08 16:08:56,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:08:56,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402294634]
[2024-11-08 16:08:56,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:08:56,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:08:56,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:08:56,437 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-11-08 16:08:56,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:08:56,444 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2024-11-08 16:08:56,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:08:56,450 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2024-11-08 16:08:56,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:08:56,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402294634]
[2024-11-08 16:08:56,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402294634] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:08:56,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175151615]
[2024-11-08 16:08:56,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:08:56,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:08:56,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:08:56,453 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:08:56,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2024-11-08 16:08:56,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:08:56,963 INFO L255 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 37 conjuncts are in the unsatisfiable core
[2024-11-08 16:08:56,965 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:08:57,136 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
[2024-11-08 16:08:57,139 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2024-11-08 16:08:57,139 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 16:08:57,162 INFO L349 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size
[2024-11-08 16:08:57,162 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 16 treesize of output 15
[2024-11-08 16:08:57,210 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2024-11-08 16:08:57,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175151615] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 16:08:57,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 16:08:57,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 6] total 15
[2024-11-08 16:08:57,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910796191]
[2024-11-08 16:08:57,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 16:08:57,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2024-11-08 16:08:57,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:08:57,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2024-11-08 16:08:57,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240
[2024-11-08 16:08:57,212 INFO L87 Difference]: Start difference. First operand 110 states and 122 transitions. Second operand has 16 states, 15 states have (on average 6.466666666666667) internal successors, (97), 15 states have internal predecessors, (97), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2024-11-08 16:08:57,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:08:57,501 INFO L93 Difference]: Finished difference Result 134 states and 147 transitions.
[2024-11-08 16:08:57,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2024-11-08 16:08:57,501 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 6.466666666666667) internal successors, (97), 15 states have internal predecessors, (97), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 56
[2024-11-08 16:08:57,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:08:57,502 INFO L225 Difference]: With dead ends: 134
[2024-11-08 16:08:57,502 INFO L226 Difference]: Without dead ends: 134
[2024-11-08 16:08:57,503 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342
[2024-11-08 16:08:57,503 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 110 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-08 16:08:57,503 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 459 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-08 16:08:57,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states.
[2024-11-08 16:08:57,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 115.
[2024-11-08 16:08:57,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 99 states have (on average 1.2525252525252526) internal successors, (124), 111 states have internal predecessors, (124), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 16:08:57,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 128 transitions.
[2024-11-08 16:08:57,506 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 128 transitions. Word has length 56
[2024-11-08 16:08:57,507 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:08:57,507 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 128 transitions.
[2024-11-08 16:08:57,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 6.466666666666667) internal successors, (97), 15 states have internal predecessors, (97), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2024-11-08 16:08:57,507 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 128 transitions.
[2024-11-08 16:08:57,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61
[2024-11-08 16:08:57,508 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:08:57,508 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:08:57,535 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0
[2024-11-08 16:08:57,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34
[2024-11-08 16:08:57,709 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:08:57,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:08:57,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1982155085, now seen corresponding path program 1 times
[2024-11-08 16:08:57,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:08:57,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424467636]
[2024-11-08 16:08:57,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:08:57,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:08:57,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:09:00,254 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-11-08 16:09:00,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:09:00,423 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2024-11-08 16:09:00,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:09:00,651 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 16:09:00,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:09:00,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424467636]
[2024-11-08 16:09:00,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424467636] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:09:00,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728411986]
[2024-11-08 16:09:00,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:09:00,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:09:00,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:09:00,652 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:09:00,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2024-11-08 16:09:01,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:09:01,082 INFO L255 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 129 conjuncts are in the unsatisfiable core
[2024-11-08 16:09:01,086 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:09:01,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-11-08 16:09:01,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-11-08 16:09:01,571 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 16:09:01,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11
[2024-11-08 16:09:01,576 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 16:09:01,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11
[2024-11-08 16:09:01,650 INFO L349 Elim1Store]: treesize reduction 33, result has 25.0 percent of original size
[2024-11-08 16:09:01,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15
[2024-11-08 16:09:01,667 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size
[2024-11-08 16:09:01,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 23
[2024-11-08 16:09:03,450 INFO L173 IndexEqualityManager]: detected equality via solver
[2024-11-08 16:09:03,451 INFO L173 IndexEqualityManager]: detected equality via solver
[2024-11-08 16:09:03,470 INFO L349 Elim1Store]: treesize reduction 84, result has 11.6 percent of original size
[2024-11-08 16:09:03,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 118 treesize of output 66
[2024-11-08 16:09:03,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 28
[2024-11-08 16:09:03,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 54
[2024-11-08 16:09:03,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 40
[2024-11-08 16:09:04,437 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-08 16:09:04,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 76 treesize of output 31
[2024-11-08 16:09:04,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10
[2024-11-08 16:09:04,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7
[2024-11-08 16:09:04,664 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2024-11-08 16:09:04,664 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 16:09:07,451 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 388 treesize of output 284
[2024-11-08 16:09:07,454 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 288 treesize of output 204
[2024-11-08 16:09:09,358 INFO L349 Elim1Store]: treesize reduction 19, result has 62.0 percent of original size
[2024-11-08 16:09:09,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 503 treesize of output 477
[2024-11-08 16:09:09,377 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 805 treesize of output 781
[2024-11-08 16:09:09,408 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-08 16:09:09,408 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 326 treesize of output 319
[2024-11-08 16:09:09,422 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 286 treesize of output 280
[2024-11-08 16:09:09,574 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-08 16:09:09,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 333 treesize of output 205
[2024-11-08 16:09:09,579 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 16:09:09,580 INFO L173 IndexEqualityManager]: detected equality via solver
[2024-11-08 16:09:09,593 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 242 treesize of output 220
[2024-11-08 16:09:09,598 INFO L173 IndexEqualityManager]: detected equality via solver
[2024-11-08 16:09:09,601 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 73 treesize of output 59
[2024-11-08 16:09:09,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4
[2024-11-08 16:09:10,155 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2024-11-08 16:09:10,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728411986] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 16:09:10,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 16:09:10,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 33, 32] total 90
[2024-11-08 16:09:10,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92078633]
[2024-11-08 16:09:10,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 16:09:10,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 90 states
[2024-11-08 16:09:10,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:09:10,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants.
[2024-11-08 16:09:10,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=405, Invalid=7598, Unknown=7, NotChecked=0, Total=8010
[2024-11-08 16:09:10,160 INFO L87 Difference]: Start difference. First operand 115 states and 128 transitions. Second operand has 90 states, 89 states have (on average 1.550561797752809) internal successors, (138), 83 states have internal predecessors, (138), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6)
[2024-11-08 16:09:17,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:09:17,565 INFO L93 Difference]: Finished difference Result 104 states and 108 transitions.
[2024-11-08 16:09:17,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states.
[2024-11-08 16:09:17,566 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 89 states have (on average 1.550561797752809) internal successors, (138), 83 states have internal predecessors, (138), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 60
[2024-11-08 16:09:17,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:09:17,567 INFO L225 Difference]: With dead ends: 104
[2024-11-08 16:09:17,567 INFO L226 Difference]: Without dead ends: 104
[2024-11-08 16:09:17,570 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3010 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=776, Invalid=12327, Unknown=7, NotChecked=0, Total=13110
[2024-11-08 16:09:17,571 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 118 mSDsluCounter, 1539 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 1574 SdHoareTripleChecker+Invalid, 2387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time
[2024-11-08 16:09:17,571 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 1574 Invalid, 2387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 2380 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time]
[2024-11-08 16:09:17,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states.
[2024-11-08 16:09:17,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 102.
[2024-11-08 16:09:17,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 86 states have (on average 1.186046511627907) internal successors, (102), 98 states have internal predecessors, (102), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 16:09:17,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 106 transitions.
[2024-11-08 16:09:17,575 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 106 transitions. Word has length 60
[2024-11-08 16:09:17,575 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:09:17,575 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 106 transitions.
[2024-11-08 16:09:17,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 89 states have (on average 1.550561797752809) internal successors, (138), 83 states have internal predecessors, (138), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6)
[2024-11-08 16:09:17,576 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 106 transitions.
[2024-11-08 16:09:17,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70
[2024-11-08 16:09:17,576 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:09:17,577 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:09:17,597 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0
[2024-11-08 16:09:17,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35
[2024-11-08 16:09:17,777 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:09:17,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:09:17,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1987869824, now seen corresponding path program 1 times
[2024-11-08 16:09:17,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:09:17,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699885897]
[2024-11-08 16:09:17,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:09:17,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:09:17,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:09:20,519 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-11-08 16:09:20,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:09:20,749 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2024-11-08 16:09:20,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:09:20,979 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 16:09:20,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:09:20,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699885897]
[2024-11-08 16:09:20,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699885897] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:09:20,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56700461]
[2024-11-08 16:09:20,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:09:20,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:09:20,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:09:20,981 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:09:20,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process
[2024-11-08 16:09:21,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:09:21,402 INFO L255 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 120 conjuncts are in the unsatisfiable core
[2024-11-08 16:09:21,406 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:09:22,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2024-11-08 16:09:25,908 INFO L349 Elim1Store]: treesize reduction 32, result has 63.6 percent of original size
[2024-11-08 16:09:25,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 580 treesize of output 379
[2024-11-08 16:09:39,608 WARN L286 SmtUtils]: Spent 10.50s on a formula simplification. DAG size of input: 521 DAG size of output: 476 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1)
[2024-11-08 16:09:39,609 INFO L349 Elim1Store]: treesize reduction 416, result has 81.4 percent of original size
[2024-11-08 16:09:39,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 66 case distinctions, treesize of input 1540 treesize of output 2944
[2024-11-08 16:09:39,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2024-11-08 16:19:39,492 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory")
[2024-11-08 16:19:39,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101
[2024-11-08 16:19:39,493 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception
[2024-11-08 16:19:39,510 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0
[2024-11-08 16:19:39,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36
[2024-11-08 16:19:39,694 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver:
de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory")
at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262)
at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277)
at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.assertTerm(Scriptor.java:147)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.assertTerm(DiffWrapperScript.java:111)
at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.assertTerm(WrapperScript.java:158)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:584)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:245)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:318)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:728)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:133)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.pushInner(QuantifierPusher.java:274)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:194)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:337)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51)
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:234)
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416)
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:195)
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:290)
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:180)
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.<init>(TraceCheckSpWp.java:159)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77)
at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267)
at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148)
at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137)
at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.<init>(AutomatonFreeRefinementEngine.java:85)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.<init>(TraceAbstractionRefinementEngine.java:82)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:273)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.<init>(TraceAbstractionStarter.java:143)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)
Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF
at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518)
at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701)
at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383)
at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258)
... 67 more
[2024-11-08 16:19:39,699 INFO L158 Benchmark]: Toolchain (without parser) took 776580.37ms. Allocated memory was 167.8MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 129.9MB in the beginning and 987.1MB in the end (delta: -857.2MB). Peak memory consumption was 813.1MB. Max. memory is 16.1GB.
[2024-11-08 16:19:39,699 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 167.8MB. Free memory was 144.0MB in the beginning and 143.9MB in the end (delta: 136.9kB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-08 16:19:39,699 INFO L158 Benchmark]: CACSL2BoogieTranslator took 562.00ms. Allocated memory is still 167.8MB. Free memory was 129.9MB in the beginning and 109.7MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB.
[2024-11-08 16:19:39,700 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.21ms. Allocated memory is still 167.8MB. Free memory was 109.7MB in the beginning and 107.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2024-11-08 16:19:39,700 INFO L158 Benchmark]: Boogie Preprocessor took 78.37ms. Allocated memory is still 167.8MB. Free memory was 107.6MB in the beginning and 104.7MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2024-11-08 16:19:39,700 INFO L158 Benchmark]: RCFGBuilder took 663.22ms. Allocated memory is still 167.8MB. Free memory was 104.7MB in the beginning and 80.4MB in the end (delta: 24.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB.
[2024-11-08 16:19:39,700 INFO L158 Benchmark]: TraceAbstraction took 775199.02ms. Allocated memory was 167.8MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 79.5MB in the beginning and 987.1MB in the end (delta: -907.6MB). Peak memory consumption was 762.8MB. Max. memory is 16.1GB.
[2024-11-08 16:19:39,701 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.22ms. Allocated memory is still 167.8MB. Free memory was 144.0MB in the beginning and 143.9MB in the end (delta: 136.9kB). There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 562.00ms. Allocated memory is still 167.8MB. Free memory was 129.9MB in the beginning and 109.7MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 68.21ms. Allocated memory is still 167.8MB. Free memory was 109.7MB in the beginning and 107.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 78.37ms. Allocated memory is still 167.8MB. Free memory was 107.6MB in the beginning and 104.7MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* RCFGBuilder took 663.22ms. Allocated memory is still 167.8MB. Free memory was 104.7MB in the beginning and 80.4MB in the end (delta: 24.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB.
* TraceAbstraction took 775199.02ms. Allocated memory was 167.8MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 79.5MB in the beginning and 987.1MB in the end (delta: -907.6MB). Peak memory consumption was 762.8MB. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory")
de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory")
: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262)
RESULT: Ultimate could not prove your program: Toolchain returned no result.
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Using bit-precise analysis
Retrying with bit-precise analysis
### Bit-precise run ###
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/dll2c_remove_all_reverse.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a81d76a671fec08918102c7898e8919d02b265d05707efa1508363dab4714d44
--- Real Ultimate output ---
This is Ultimate 0.2.5-dev-a016563
[2024-11-08 16:19:42,437 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-11-08 16:19:42,553 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf
[2024-11-08 16:19:42,559 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-11-08 16:19:42,559 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-08 16:19:42,592 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-08 16:19:42,597 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-08 16:19:42,597 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-08 16:19:42,598 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-08 16:19:42,598 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-11-08 16:19:42,599 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-08 16:19:42,599 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-08 16:19:42,600 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-08 16:19:42,600 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-11-08 16:19:42,602 INFO L153 SettingsManager]: * Use SBE=true
[2024-11-08 16:19:42,604 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-08 16:19:42,605 INFO L153 SettingsManager]: * sizeof long=4
[2024-11-08 16:19:42,609 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-11-08 16:19:42,609 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-11-08 16:19:42,609 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-11-08 16:19:42,610 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true
[2024-11-08 16:19:42,610 INFO L153 SettingsManager]: * Bitprecise bitfields=true
[2024-11-08 16:19:42,611 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true
[2024-11-08 16:19:42,614 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-08 16:19:42,614 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2024-11-08 16:19:42,615 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true
[2024-11-08 16:19:42,615 INFO L153 SettingsManager]: * Allow undefined functions=false
[2024-11-08 16:19:42,616 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-08 16:19:42,616 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false
[2024-11-08 16:19:42,616 INFO L153 SettingsManager]: * sizeof long double=12
[2024-11-08 16:19:42,617 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-11-08 16:19:42,617 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-08 16:19:42,617 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-08 16:19:42,617 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-08 16:19:42,618 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-08 16:19:42,618 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-08 16:19:42,618 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-08 16:19:42,619 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-11-08 16:19:42,619 INFO L153 SettingsManager]: * Trace refinement strategy=FOX
[2024-11-08 16:19:42,619 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-08 16:19:42,619 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-08 16:19:42,621 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-08 16:19:42,622 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-11-08 16:19:42,622 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-08 16:19:42,623 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a81d76a671fec08918102c7898e8919d02b265d05707efa1508363dab4714d44
[2024-11-08 16:19:43,130 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-08 16:19:43,157 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-08 16:19:43,163 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-08 16:19:43,165 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-11-08 16:19:43,165 INFO L274 PluginConnector]: CDTParser initialized
[2024-11-08 16:19:43,167 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/list-simple/dll2c_remove_all_reverse.i
Unable to find full path for "g++"
[2024-11-08 16:19:45,652 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2024-11-08 16:19:46,029 INFO L384 CDTParser]: Found 1 translation units.
[2024-11-08 16:19:46,030 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/sv-benchmarks/c/list-simple/dll2c_remove_all_reverse.i
[2024-11-08 16:19:46,047 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/data/18ad8451c/f611d8e7087448c2bfcc82ac99ca9317/FLAGf6a5c7790
[2024-11-08 16:19:46,255 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/data/18ad8451c/f611d8e7087448c2bfcc82ac99ca9317
[2024-11-08 16:19:46,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-08 16:19:46,260 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-08 16:19:46,262 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-08 16:19:46,263 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-08 16:19:46,274 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-08 16:19:46,278 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:19:46" (1/1) ...
[2024-11-08 16:19:46,279 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16b2b1d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:19:46, skipping insertion in model container
[2024-11-08 16:19:46,279 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:19:46" (1/1) ...
[2024-11-08 16:19:46,332 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-11-08 16:19:46,836 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-08 16:19:46,863 INFO L200 MainTranslator]: Completed pre-run
[2024-11-08 16:19:46,957 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-08 16:19:47,020 INFO L204 MainTranslator]: Completed translation
[2024-11-08 16:19:47,021 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:19:47 WrapperNode
[2024-11-08 16:19:47,022 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-08 16:19:47,023 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-08 16:19:47,024 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-08 16:19:47,024 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-08 16:19:47,034 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:19:47" (1/1) ...
[2024-11-08 16:19:47,064 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:19:47" (1/1) ...
[2024-11-08 16:19:47,106 INFO L138 Inliner]: procedures = 129, calls = 38, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 113
[2024-11-08 16:19:47,111 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-08 16:19:47,112 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-08 16:19:47,112 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-08 16:19:47,113 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-11-08 16:19:47,131 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:19:47" (1/1) ...
[2024-11-08 16:19:47,131 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:19:47" (1/1) ...
[2024-11-08 16:19:47,137 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:19:47" (1/1) ...
[2024-11-08 16:19:47,181 INFO L175 MemorySlicer]: Split 21 memory accesses to 3 slices as follows [2, 8, 11]. 52 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0]. The 10 writes are split as follows [0, 1, 9].
[2024-11-08 16:19:47,181 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:19:47" (1/1) ...
[2024-11-08 16:19:47,182 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:19:47" (1/1) ...
[2024-11-08 16:19:47,203 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:19:47" (1/1) ...
[2024-11-08 16:19:47,216 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:19:47" (1/1) ...
[2024-11-08 16:19:47,219 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:19:47" (1/1) ...
[2024-11-08 16:19:47,224 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:19:47" (1/1) ...
[2024-11-08 16:19:47,229 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-08 16:19:47,231 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-08 16:19:47,231 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-11-08 16:19:47,231 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-11-08 16:19:47,232 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:19:47" (1/1) ...
[2024-11-08 16:19:47,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-08 16:19:47,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:19:47,303 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-08 16:19:47,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-08 16:19:47,354 INFO L130 BoogieDeclarations]: Found specification of procedure node_create
[2024-11-08 16:19:47,355 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create
[2024-11-08 16:19:47,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2024-11-08 16:19:47,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-08 16:19:47,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2024-11-08 16:19:47,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0
[2024-11-08 16:19:47,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1
[2024-11-08 16:19:47,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2
[2024-11-08 16:19:47,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0
[2024-11-08 16:19:47,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1
[2024-11-08 16:19:47,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2
[2024-11-08 16:19:47,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2024-11-08 16:19:47,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0
[2024-11-08 16:19:47,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1
[2024-11-08 16:19:47,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2
[2024-11-08 16:19:47,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0
[2024-11-08 16:19:47,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1
[2024-11-08 16:19:47,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2
[2024-11-08 16:19:47,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-08 16:19:47,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1
[2024-11-08 16:19:47,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2
[2024-11-08 16:19:47,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-08 16:19:47,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-08 16:19:47,607 INFO L238 CfgBuilder]: Building ICFG
[2024-11-08 16:19:47,611 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-08 16:19:48,339 INFO L? ?]: Removed 110 outVars from TransFormulas that were not future-live.
[2024-11-08 16:19:48,339 INFO L287 CfgBuilder]: Performing block encoding
[2024-11-08 16:19:48,363 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-08 16:19:48,365 INFO L316 CfgBuilder]: Removed 0 assume(true) statements.
[2024-11-08 16:19:48,366 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:19:48 BoogieIcfgContainer
[2024-11-08 16:19:48,367 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-08 16:19:48,369 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-08 16:19:48,371 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-11-08 16:19:48,375 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-11-08 16:19:48,376 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:19:46" (1/3) ...
[2024-11-08 16:19:48,377 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bbf5cf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:19:48, skipping insertion in model container
[2024-11-08 16:19:48,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:19:47" (2/3) ...
[2024-11-08 16:19:48,379 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bbf5cf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:19:48, skipping insertion in model container
[2024-11-08 16:19:48,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:19:48" (3/3) ...
[2024-11-08 16:19:48,381 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2c_remove_all_reverse.i
[2024-11-08 16:19:48,407 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-08 16:19:48,408 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations.
[2024-11-08 16:19:48,471 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-08 16:19:48,480 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;@7418c68d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-08 16:19:48,480 INFO L334 AbstractCegarLoop]: Starting to check reachability of 44 error locations.
[2024-11-08 16:19:48,486 INFO L276 IsEmpty]: Start isEmpty. Operand has 102 states, 54 states have (on average 1.9814814814814814) internal successors, (107), 98 states have internal predecessors, (107), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 16:19:48,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2024-11-08 16:19:48,502 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:19:48,503 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2024-11-08 16:19:48,504 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting node_createErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:19:48,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:19:48,515 INFO L85 PathProgramCache]: Analyzing trace with hash 893917874, now seen corresponding path program 1 times
[2024-11-08 16:19:48,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:19:48,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1921604770]
[2024-11-08 16:19:48,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:19:48,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:19:48,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:19:48,540 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:19:48,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-08 16:19:48,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:19:48,698 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-08 16:19:48,707 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:19:48,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7
[2024-11-08 16:19:48,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 16:19:48,859 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 16:19:48,860 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 16:19:48,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921604770]
[2024-11-08 16:19:48,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921604770] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:19:48,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:19:48,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-08 16:19:48,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963763062]
[2024-11-08 16:19:48,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:19:48,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-08 16:19:48,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 16:19:48,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-08 16:19:48,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-08 16:19:48,918 INFO L87 Difference]: Start difference. First operand has 102 states, 54 states have (on average 1.9814814814814814) internal successors, (107), 98 states have internal predecessors, (107), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 16:19:49,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:19:49,199 INFO L93 Difference]: Finished difference Result 98 states and 105 transitions.
[2024-11-08 16:19:49,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-08 16:19:49,204 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6
[2024-11-08 16:19:49,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:19:49,215 INFO L225 Difference]: With dead ends: 98
[2024-11-08 16:19:49,217 INFO L226 Difference]: Without dead ends: 95
[2024-11-08 16:19:49,219 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-08 16:19:49,225 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 3 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-08 16:19:49,229 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 152 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-08 16:19:49,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states.
[2024-11-08 16:19:49,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95.
[2024-11-08 16:19:49,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 51 states have (on average 1.9019607843137254) internal successors, (97), 91 states have internal predecessors, (97), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 16:19:49,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 101 transitions.
[2024-11-08 16:19:49,289 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 101 transitions. Word has length 6
[2024-11-08 16:19:49,289 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:19:49,290 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 101 transitions.
[2024-11-08 16:19:49,290 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 16:19:49,290 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 101 transitions.
[2024-11-08 16:19:49,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2024-11-08 16:19:49,291 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:19:49,291 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2024-11-08 16:19:49,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-08 16:19:49,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:19:49,497 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting node_createErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:19:49,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:19:49,498 INFO L85 PathProgramCache]: Analyzing trace with hash 893917875, now seen corresponding path program 1 times
[2024-11-08 16:19:49,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:19:49,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1286940399]
[2024-11-08 16:19:49,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:19:49,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:19:49,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:19:49,502 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:19:49,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-08 16:19:49,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:19:49,625 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-11-08 16:19:49,627 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:19:49,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2024-11-08 16:19:49,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 16:19:49,694 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 16:19:49,694 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 16:19:49,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286940399]
[2024-11-08 16:19:49,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286940399] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:19:49,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:19:49,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-08 16:19:49,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781113413]
[2024-11-08 16:19:49,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:19:49,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-08 16:19:49,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 16:19:49,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-08 16:19:49,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-08 16:19:49,700 INFO L87 Difference]: Start difference. First operand 95 states and 101 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 16:19:50,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:19:50,006 INFO L93 Difference]: Finished difference Result 92 states and 98 transitions.
[2024-11-08 16:19:50,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-08 16:19:50,008 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6
[2024-11-08 16:19:50,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:19:50,009 INFO L225 Difference]: With dead ends: 92
[2024-11-08 16:19:50,010 INFO L226 Difference]: Without dead ends: 92
[2024-11-08 16:19:50,010 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-08 16:19:50,012 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 3 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-08 16:19:50,013 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 153 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-08 16:19:50,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states.
[2024-11-08 16:19:50,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92.
[2024-11-08 16:19:50,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 51 states have (on average 1.8431372549019607) internal successors, (94), 88 states have internal predecessors, (94), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 16:19:50,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 98 transitions.
[2024-11-08 16:19:50,023 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 98 transitions. Word has length 6
[2024-11-08 16:19:50,024 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:19:50,024 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 98 transitions.
[2024-11-08 16:19:50,024 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 16:19:50,025 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 98 transitions.
[2024-11-08 16:19:50,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2024-11-08 16:19:50,026 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:19:50,026 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:19:50,052 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-11-08 16:19:50,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:19:50,227 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:19:50,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:19:50,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1092471078, now seen corresponding path program 1 times
[2024-11-08 16:19:50,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:19:50,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1751323699]
[2024-11-08 16:19:50,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:19:50,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:19:50,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:19:50,234 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:19:50,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-08 16:19:50,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:19:50,410 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 7 conjuncts are in the unsatisfiable core
[2024-11-08 16:19:50,417 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:19:50,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7
[2024-11-08 16:19:50,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 16:19:50,537 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 16:19:50,538 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 16:19:50,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751323699]
[2024-11-08 16:19:50,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751323699] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:19:50,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:19:50,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-08 16:19:50,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770096522]
[2024-11-08 16:19:50,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:19:50,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-08 16:19:50,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 16:19:50,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-08 16:19:50,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2024-11-08 16:19:50,542 INFO L87 Difference]: Start difference. First operand 92 states and 98 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2024-11-08 16:19:51,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:19:51,121 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions.
[2024-11-08 16:19:51,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-08 16:19:51,122 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14
[2024-11-08 16:19:51,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:19:51,124 INFO L225 Difference]: With dead ends: 96
[2024-11-08 16:19:51,125 INFO L226 Difference]: Without dead ends: 96
[2024-11-08 16:19:51,125 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2024-11-08 16:19:51,127 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 6 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2024-11-08 16:19:51,128 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 280 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2024-11-08 16:19:51,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states.
[2024-11-08 16:19:51,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95.
[2024-11-08 16:19:51,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 54 states have (on average 1.8518518518518519) internal successors, (100), 91 states have internal predecessors, (100), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 16:19:51,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 104 transitions.
[2024-11-08 16:19:51,141 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 104 transitions. Word has length 14
[2024-11-08 16:19:51,141 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:19:51,141 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 104 transitions.
[2024-11-08 16:19:51,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2024-11-08 16:19:51,142 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 104 transitions.
[2024-11-08 16:19:51,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2024-11-08 16:19:51,143 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:19:51,143 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:19:51,169 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-11-08 16:19:51,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:19:51,348 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:19:51,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:19:51,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1092471079, now seen corresponding path program 1 times
[2024-11-08 16:19:51,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:19:51,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [524033628]
[2024-11-08 16:19:51,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:19:51,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:19:51,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:19:51,354 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:19:51,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-08 16:19:51,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:19:51,495 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-11-08 16:19:51,497 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:19:51,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 16:19:51,537 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 16:19:51,537 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 16:19:51,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524033628]
[2024-11-08 16:19:51,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524033628] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:19:51,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:19:51,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-08 16:19:51,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268382756]
[2024-11-08 16:19:51,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:19:51,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-08 16:19:51,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 16:19:51,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-08 16:19:51,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-08 16:19:51,544 INFO L87 Difference]: Start difference. First operand 95 states and 104 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2024-11-08 16:19:51,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:19:51,576 INFO L93 Difference]: Finished difference Result 104 states and 112 transitions.
[2024-11-08 16:19:51,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-08 16:19:51,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14
[2024-11-08 16:19:51,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:19:51,579 INFO L225 Difference]: With dead ends: 104
[2024-11-08 16:19:51,581 INFO L226 Difference]: Without dead ends: 104
[2024-11-08 16:19:51,581 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-08 16:19:51,583 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 11 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-08 16:19:51,583 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 184 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-08 16:19:51,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states.
[2024-11-08 16:19:51,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 94.
[2024-11-08 16:19:51,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 53 states have (on average 1.8113207547169812) internal successors, (96), 90 states have internal predecessors, (96), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 16:19:51,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 100 transitions.
[2024-11-08 16:19:51,603 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 100 transitions. Word has length 14
[2024-11-08 16:19:51,603 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:19:51,603 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 100 transitions.
[2024-11-08 16:19:51,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2024-11-08 16:19:51,604 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 100 transitions.
[2024-11-08 16:19:51,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2024-11-08 16:19:51,605 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:19:51,605 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:19:51,631 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2024-11-08 16:19:51,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:19:51,806 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:19:51,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:19:51,806 INFO L85 PathProgramCache]: Analyzing trace with hash -24083230, now seen corresponding path program 1 times
[2024-11-08 16:19:51,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:19:51,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1782792064]
[2024-11-08 16:19:51,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:19:51,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:19:51,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:19:51,812 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:19:51,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-11-08 16:19:51,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:19:51,946 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-08 16:19:51,949 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:19:51,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7
[2024-11-08 16:19:52,014 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 16:19:52,015 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 16:19:52,015 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 16:19:52,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782792064]
[2024-11-08 16:19:52,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782792064] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:19:52,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:19:52,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-08 16:19:52,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404708579]
[2024-11-08 16:19:52,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:19:52,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-08 16:19:52,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 16:19:52,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-08 16:19:52,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2024-11-08 16:19:52,018 INFO L87 Difference]: Start difference. First operand 94 states and 100 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-08 16:19:52,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:19:52,523 INFO L93 Difference]: Finished difference Result 93 states and 99 transitions.
[2024-11-08 16:19:52,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-08 16:19:52,524 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25
[2024-11-08 16:19:52,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:19:52,525 INFO L225 Difference]: With dead ends: 93
[2024-11-08 16:19:52,525 INFO L226 Difference]: Without dead ends: 93
[2024-11-08 16:19:52,525 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2024-11-08 16:19:52,526 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 6 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2024-11-08 16:19:52,527 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 276 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2024-11-08 16:19:52,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states.
[2024-11-08 16:19:52,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93.
[2024-11-08 16:19:52,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 53 states have (on average 1.7924528301886793) internal successors, (95), 89 states have internal predecessors, (95), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 16:19:52,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 99 transitions.
[2024-11-08 16:19:52,535 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 99 transitions. Word has length 25
[2024-11-08 16:19:52,535 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:19:52,536 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 99 transitions.
[2024-11-08 16:19:52,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-08 16:19:52,536 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 99 transitions.
[2024-11-08 16:19:52,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2024-11-08 16:19:52,537 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:19:52,537 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:19:52,563 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2024-11-08 16:19:52,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:19:52,742 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:19:52,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:19:52,743 INFO L85 PathProgramCache]: Analyzing trace with hash -24083229, now seen corresponding path program 1 times
[2024-11-08 16:19:52,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:19:52,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1384315796]
[2024-11-08 16:19:52,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:19:52,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:19:52,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:19:52,746 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:19:52,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2024-11-08 16:19:52,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:19:52,905 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-11-08 16:19:52,908 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:19:52,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2024-11-08 16:19:53,110 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 16:19:53,110 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 16:19:53,111 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 16:19:53,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384315796]
[2024-11-08 16:19:53,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384315796] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:19:53,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:19:53,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-08 16:19:53,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627796624]
[2024-11-08 16:19:53,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:19:53,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-08 16:19:53,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 16:19:53,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-08 16:19:53,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2024-11-08 16:19:53,115 INFO L87 Difference]: Start difference. First operand 93 states and 99 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-08 16:19:53,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:19:53,712 INFO L93 Difference]: Finished difference Result 92 states and 98 transitions.
[2024-11-08 16:19:53,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-08 16:19:53,713 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25
[2024-11-08 16:19:53,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:19:53,715 INFO L225 Difference]: With dead ends: 92
[2024-11-08 16:19:53,715 INFO L226 Difference]: Without dead ends: 92
[2024-11-08 16:19:53,715 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2024-11-08 16:19:53,716 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 6 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2024-11-08 16:19:53,717 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 300 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2024-11-08 16:19:53,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states.
[2024-11-08 16:19:53,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92.
[2024-11-08 16:19:53,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 53 states have (on average 1.7735849056603774) internal successors, (94), 88 states have internal predecessors, (94), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 16:19:53,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 98 transitions.
[2024-11-08 16:19:53,725 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 98 transitions. Word has length 25
[2024-11-08 16:19:53,725 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:19:53,726 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 98 transitions.
[2024-11-08 16:19:53,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-08 16:19:53,726 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 98 transitions.
[2024-11-08 16:19:53,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2024-11-08 16:19:53,727 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:19:53,727 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:19:53,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2024-11-08 16:19:53,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:19:53,932 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:19:53,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:19:53,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1669147837, now seen corresponding path program 1 times
[2024-11-08 16:19:53,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:19:53,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1788140516]
[2024-11-08 16:19:53,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:19:53,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:19:53,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:19:53,941 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:19:53,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2024-11-08 16:19:54,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:19:54,129 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 9 conjuncts are in the unsatisfiable core
[2024-11-08 16:19:54,132 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:19:54,251 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| (_ BitVec 32))) (and (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| (select |c_#valid| |node_create_~temp~0#1.base|))) (= (_ bv0 1) (select |c_old(#valid)| |node_create_~temp~0#1.base|)))) is different from true
[2024-11-08 16:19:54,374 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size
[2024-11-08 16:19:54,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20
[2024-11-08 16:19:54,396 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked.
[2024-11-08 16:19:54,397 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 16:19:58,851 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 16:19:58,851 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 16:19:58,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788140516]
[2024-11-08 16:19:58,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788140516] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 16:19:58,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 16:19:58,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9
[2024-11-08 16:19:58,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297661587]
[2024-11-08 16:19:58,853 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 16:19:58,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-11-08 16:19:58,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 16:19:58,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-11-08 16:19:58,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=54, Unknown=2, NotChecked=14, Total=90
[2024-11-08 16:19:58,855 INFO L87 Difference]: Start difference. First operand 92 states and 98 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 7 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-08 16:19:59,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:19:59,719 INFO L93 Difference]: Finished difference Result 97 states and 106 transitions.
[2024-11-08 16:19:59,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-08 16:19:59,720 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 7 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27
[2024-11-08 16:19:59,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:19:59,722 INFO L225 Difference]: With dead ends: 97
[2024-11-08 16:19:59,722 INFO L226 Difference]: Without dead ends: 97
[2024-11-08 16:19:59,722 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=30, Invalid=82, Unknown=2, NotChecked=18, Total=132
[2024-11-08 16:19:59,724 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 1 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 99 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2024-11-08 16:19:59,724 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 301 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 263 Invalid, 0 Unknown, 99 Unchecked, 0.8s Time]
[2024-11-08 16:19:59,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states.
[2024-11-08 16:19:59,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97.
[2024-11-08 16:19:59,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 57 states have (on average 1.7543859649122806) internal successors, (100), 92 states have internal predecessors, (100), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-08 16:19:59,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 106 transitions.
[2024-11-08 16:19:59,733 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 106 transitions. Word has length 27
[2024-11-08 16:19:59,733 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:19:59,733 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 106 transitions.
[2024-11-08 16:19:59,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 7 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-08 16:19:59,734 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 106 transitions.
[2024-11-08 16:19:59,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2024-11-08 16:19:59,735 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:19:59,735 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:19:59,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2024-11-08 16:19:59,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:19:59,936 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:19:59,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:19:59,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1669147836, now seen corresponding path program 1 times
[2024-11-08 16:19:59,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:19:59,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [929726869]
[2024-11-08 16:19:59,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:19:59,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:19:59,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:19:59,940 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:19:59,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2024-11-08 16:20:00,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:20:00,128 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 17 conjuncts are in the unsatisfiable core
[2024-11-08 16:20:00,134 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:20:00,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2024-11-08 16:20:00,445 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |node_create_~temp~0#1.base| (select |c_#length| |node_create_~temp~0#1.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |node_create_~temp~0#1.base|)))) is different from true
[2024-11-08 16:20:00,550 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 16:20:00,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9
[2024-11-08 16:20:00,573 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size
[2024-11-08 16:20:00,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13
[2024-11-08 16:20:00,622 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked.
[2024-11-08 16:20:00,622 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 16:20:05,001 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 16:20:05,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929726869]
[2024-11-08 16:20:05,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929726869] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:20:05,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1058728517]
[2024-11-08 16:20:05,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:20:05,003 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-08 16:20:05,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/cvc4
[2024-11-08 16:20:05,006 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-08 16:20:05,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process
[2024-11-08 16:20:05,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:20:05,375 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 18 conjuncts are in the unsatisfiable core
[2024-11-08 16:20:05,378 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:20:05,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2024-11-08 16:20:05,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7
[2024-11-08 16:20:05,679 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 16:20:05,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9
[2024-11-08 16:20:05,704 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size
[2024-11-08 16:20:05,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13
[2024-11-08 16:20:05,737 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked.
[2024-11-08 16:20:05,737 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 16:20:07,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1058728517] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:20:07,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 16:20:07,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 9
[2024-11-08 16:20:07,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177442881]
[2024-11-08 16:20:07,046 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 16:20:07,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-11-08 16:20:07,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 16:20:07,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-11-08 16:20:07,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=86, Unknown=2, NotChecked=18, Total=132
[2024-11-08 16:20:07,048 INFO L87 Difference]: Start difference. First operand 97 states and 106 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 16:20:08,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:20:08,364 INFO L93 Difference]: Finished difference Result 97 states and 105 transitions.
[2024-11-08 16:20:08,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-11-08 16:20:08,365 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27
[2024-11-08 16:20:08,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:20:08,366 INFO L225 Difference]: With dead ends: 97
[2024-11-08 16:20:08,366 INFO L226 Difference]: Without dead ends: 97
[2024-11-08 16:20:08,367 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=33, Invalid=125, Unknown=2, NotChecked=22, Total=182
[2024-11-08 16:20:08,368 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 0 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 98 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time
[2024-11-08 16:20:08,368 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 315 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 345 Invalid, 0 Unknown, 98 Unchecked, 1.1s Time]
[2024-11-08 16:20:08,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states.
[2024-11-08 16:20:08,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97.
[2024-11-08 16:20:08,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 57 states have (on average 1.736842105263158) internal successors, (99), 92 states have internal predecessors, (99), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-08 16:20:08,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 105 transitions.
[2024-11-08 16:20:08,376 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 105 transitions. Word has length 27
[2024-11-08 16:20:08,376 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:20:08,376 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 105 transitions.
[2024-11-08 16:20:08,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 16:20:08,377 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 105 transitions.
[2024-11-08 16:20:08,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2024-11-08 16:20:08,378 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:20:08,378 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:20:08,386 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0
[2024-11-08 16:20:08,596 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0
[2024-11-08 16:20:08,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:20:08,779 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:20:08,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:20:08,780 INFO L85 PathProgramCache]: Analyzing trace with hash -2028115226, now seen corresponding path program 1 times
[2024-11-08 16:20:08,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:20:08,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1927491398]
[2024-11-08 16:20:08,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:20:08,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:20:08,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:20:08,783 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:20:08,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2024-11-08 16:20:08,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:20:08,942 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-11-08 16:20:08,944 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:20:09,043 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 16:20:09,044 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 16:20:09,129 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 16:20:09,130 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 16:20:09,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927491398]
[2024-11-08 16:20:09,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927491398] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 16:20:09,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 16:20:09,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6
[2024-11-08 16:20:09,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193419413]
[2024-11-08 16:20:09,131 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 16:20:09,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-08 16:20:09,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 16:20:09,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-08 16:20:09,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2024-11-08 16:20:09,133 INFO L87 Difference]: Start difference. First operand 97 states and 105 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 16:20:09,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:20:09,361 INFO L93 Difference]: Finished difference Result 97 states and 104 transitions.
[2024-11-08 16:20:09,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-08 16:20:09,362 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29
[2024-11-08 16:20:09,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:20:09,363 INFO L225 Difference]: With dead ends: 97
[2024-11-08 16:20:09,363 INFO L226 Difference]: Without dead ends: 97
[2024-11-08 16:20:09,363 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2024-11-08 16:20:09,364 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 1 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-08 16:20:09,365 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 419 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-08 16:20:09,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states.
[2024-11-08 16:20:09,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97.
[2024-11-08 16:20:09,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 57 states have (on average 1.719298245614035) internal successors, (98), 92 states have internal predecessors, (98), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-08 16:20:09,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 104 transitions.
[2024-11-08 16:20:09,371 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 104 transitions. Word has length 29
[2024-11-08 16:20:09,372 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:20:09,372 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 104 transitions.
[2024-11-08 16:20:09,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 16:20:09,372 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 104 transitions.
[2024-11-08 16:20:09,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2024-11-08 16:20:09,373 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:20:09,374 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:20:09,397 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0
[2024-11-08 16:20:09,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:20:09,574 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:20:09,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:20:09,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1548139101, now seen corresponding path program 1 times
[2024-11-08 16:20:09,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:20:09,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [684884346]
[2024-11-08 16:20:09,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:20:09,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:20:09,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:20:09,577 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:20:09,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2024-11-08 16:20:09,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:20:09,748 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-08 16:20:09,749 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:20:09,822 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2024-11-08 16:20:09,822 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 16:20:09,861 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size
[2024-11-08 16:20:09,862 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 16 treesize of output 15
[2024-11-08 16:20:09,907 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2024-11-08 16:20:09,908 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 16:20:09,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684884346]
[2024-11-08 16:20:09,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684884346] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 16:20:09,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 16:20:09,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3
[2024-11-08 16:20:09,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772060516]
[2024-11-08 16:20:09,909 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 16:20:09,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 16:20:09,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 16:20:09,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 16:20:09,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 16:20:09,911 INFO L87 Difference]: Start difference. First operand 97 states and 104 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 16:20:10,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:20:10,241 INFO L93 Difference]: Finished difference Result 102 states and 113 transitions.
[2024-11-08 16:20:10,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-08 16:20:10,242 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30
[2024-11-08 16:20:10,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:20:10,243 INFO L225 Difference]: With dead ends: 102
[2024-11-08 16:20:10,243 INFO L226 Difference]: Without dead ends: 102
[2024-11-08 16:20:10,244 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 16:20:10,244 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 6 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-08 16:20:10,245 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 221 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-08 16:20:10,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states.
[2024-11-08 16:20:10,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101.
[2024-11-08 16:20:10,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 61 states have (on average 1.721311475409836) internal successors, (105), 96 states have internal predecessors, (105), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-08 16:20:10,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 111 transitions.
[2024-11-08 16:20:10,256 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 111 transitions. Word has length 30
[2024-11-08 16:20:10,256 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:20:10,257 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 111 transitions.
[2024-11-08 16:20:10,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 16:20:10,257 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 111 transitions.
[2024-11-08 16:20:10,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2024-11-08 16:20:10,258 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:20:10,258 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:20:10,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0
[2024-11-08 16:20:10,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:20:10,462 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:20:10,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:20:10,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1548139102, now seen corresponding path program 1 times
[2024-11-08 16:20:10,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:20:10,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1462366864]
[2024-11-08 16:20:10,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:20:10,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:20:10,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:20:10,468 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:20:10,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2024-11-08 16:20:10,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:20:10,647 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjuncts are in the unsatisfiable core
[2024-11-08 16:20:10,650 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:20:10,907 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 16:20:10,907 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 16:20:11,029 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-08 16:20:11,030 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 22 treesize of output 26
[2024-11-08 16:20:11,691 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 16:20:11,691 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 16:20:11,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462366864]
[2024-11-08 16:20:11,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462366864] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 16:20:11,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 16:20:11,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11
[2024-11-08 16:20:11,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351314486]
[2024-11-08 16:20:11,692 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 16:20:11,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2024-11-08 16:20:11,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 16:20:11,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2024-11-08 16:20:11,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132
[2024-11-08 16:20:11,694 INFO L87 Difference]: Start difference. First operand 101 states and 111 transitions. Second operand has 12 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4)
[2024-11-08 16:20:12,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:20:12,767 INFO L93 Difference]: Finished difference Result 105 states and 115 transitions.
[2024-11-08 16:20:12,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-11-08 16:20:12,769 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 30
[2024-11-08 16:20:12,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:20:12,770 INFO L225 Difference]: With dead ends: 105
[2024-11-08 16:20:12,770 INFO L226 Difference]: Without dead ends: 105
[2024-11-08 16:20:12,771 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132
[2024-11-08 16:20:12,771 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 8 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time
[2024-11-08 16:20:12,772 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 787 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time]
[2024-11-08 16:20:12,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states.
[2024-11-08 16:20:12,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 101.
[2024-11-08 16:20:12,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 61 states have (on average 1.7049180327868851) internal successors, (104), 96 states have internal predecessors, (104), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-08 16:20:12,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 110 transitions.
[2024-11-08 16:20:12,778 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 110 transitions. Word has length 30
[2024-11-08 16:20:12,778 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:20:12,779 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 110 transitions.
[2024-11-08 16:20:12,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4)
[2024-11-08 16:20:12,779 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 110 transitions.
[2024-11-08 16:20:12,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2024-11-08 16:20:12,780 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:20:12,781 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:20:12,806 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0
[2024-11-08 16:20:12,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:20:12,985 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:20:12,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:20:12,986 INFO L85 PathProgramCache]: Analyzing trace with hash 747671880, now seen corresponding path program 1 times
[2024-11-08 16:20:12,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:20:12,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [305572614]
[2024-11-08 16:20:12,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:20:12,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:20:12,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:20:12,989 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:20:12,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2024-11-08 16:20:13,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:20:13,176 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 7 conjuncts are in the unsatisfiable core
[2024-11-08 16:20:13,178 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:20:13,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7
[2024-11-08 16:20:13,308 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 16:20:13,308 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 16:20:13,308 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 16:20:13,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305572614]
[2024-11-08 16:20:13,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305572614] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:20:13,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:20:13,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-11-08 16:20:13,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255778089]
[2024-11-08 16:20:13,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:20:13,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-08 16:20:13,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 16:20:13,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-08 16:20:13,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-08 16:20:13,312 INFO L87 Difference]: Start difference. First operand 101 states and 110 transitions. Second operand has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-08 16:20:14,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:20:14,081 INFO L93 Difference]: Finished difference Result 100 states and 109 transitions.
[2024-11-08 16:20:14,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-08 16:20:14,082 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 31
[2024-11-08 16:20:14,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:20:14,083 INFO L225 Difference]: With dead ends: 100
[2024-11-08 16:20:14,083 INFO L226 Difference]: Without dead ends: 100
[2024-11-08 16:20:14,083 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-08 16:20:14,084 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 9 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2024-11-08 16:20:14,084 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 313 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2024-11-08 16:20:14,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states.
[2024-11-08 16:20:14,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100.
[2024-11-08 16:20:14,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 61 states have (on average 1.6885245901639345) internal successors, (103), 95 states have internal predecessors, (103), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-08 16:20:14,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 109 transitions.
[2024-11-08 16:20:14,088 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 109 transitions. Word has length 31
[2024-11-08 16:20:14,088 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:20:14,089 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 109 transitions.
[2024-11-08 16:20:14,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-08 16:20:14,089 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 109 transitions.
[2024-11-08 16:20:14,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2024-11-08 16:20:14,090 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:20:14,090 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:20:14,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0
[2024-11-08 16:20:14,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:20:14,291 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:20:14,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:20:14,291 INFO L85 PathProgramCache]: Analyzing trace with hash 747671881, now seen corresponding path program 1 times
[2024-11-08 16:20:14,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:20:14,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1188386922]
[2024-11-08 16:20:14,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:20:14,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:20:14,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:20:14,294 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:20:14,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2024-11-08 16:20:14,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:20:14,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 12 conjuncts are in the unsatisfiable core
[2024-11-08 16:20:14,468 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:20:14,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2024-11-08 16:20:14,729 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 16:20:14,729 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 16:20:14,730 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 16:20:14,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188386922]
[2024-11-08 16:20:14,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188386922] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:20:14,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:20:14,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-11-08 16:20:14,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598278603]
[2024-11-08 16:20:14,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:20:14,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-08 16:20:14,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 16:20:14,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-08 16:20:14,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-08 16:20:14,732 INFO L87 Difference]: Start difference. First operand 100 states and 109 transitions. Second operand has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-08 16:20:15,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:20:15,481 INFO L93 Difference]: Finished difference Result 99 states and 108 transitions.
[2024-11-08 16:20:15,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-08 16:20:15,482 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 31
[2024-11-08 16:20:15,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:20:15,483 INFO L225 Difference]: With dead ends: 99
[2024-11-08 16:20:15,483 INFO L226 Difference]: Without dead ends: 99
[2024-11-08 16:20:15,483 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-08 16:20:15,484 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 9 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2024-11-08 16:20:15,484 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 343 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2024-11-08 16:20:15,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states.
[2024-11-08 16:20:15,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99.
[2024-11-08 16:20:15,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 61 states have (on average 1.6721311475409837) internal successors, (102), 94 states have internal predecessors, (102), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-08 16:20:15,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 108 transitions.
[2024-11-08 16:20:15,489 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 108 transitions. Word has length 31
[2024-11-08 16:20:15,490 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:20:15,490 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 108 transitions.
[2024-11-08 16:20:15,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-08 16:20:15,490 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 108 transitions.
[2024-11-08 16:20:15,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36
[2024-11-08 16:20:15,492 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:20:15,492 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:20:15,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0
[2024-11-08 16:20:15,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:20:15,696 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:20:15,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:20:15,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1675263756, now seen corresponding path program 1 times
[2024-11-08 16:20:15,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:20:15,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1476477949]
[2024-11-08 16:20:15,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:20:15,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:20:15,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:20:15,698 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:20:15,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2024-11-08 16:20:15,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:20:15,890 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-08 16:20:15,892 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:20:15,962 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2024-11-08 16:20:15,962 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 16:20:15,963 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 16:20:15,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476477949]
[2024-11-08 16:20:15,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476477949] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:20:15,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:20:15,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-08 16:20:15,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413931059]
[2024-11-08 16:20:15,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:20:15,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 16:20:15,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 16:20:15,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 16:20:15,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-08 16:20:15,965 INFO L87 Difference]: Start difference. First operand 99 states and 108 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-08 16:20:16,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:20:16,010 INFO L93 Difference]: Finished difference Result 149 states and 159 transitions.
[2024-11-08 16:20:16,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-08 16:20:16,011 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 35
[2024-11-08 16:20:16,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:20:16,012 INFO L225 Difference]: With dead ends: 149
[2024-11-08 16:20:16,013 INFO L226 Difference]: Without dead ends: 149
[2024-11-08 16:20:16,013 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-08 16:20:16,014 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 158 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-08 16:20:16,014 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 174 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-08 16:20:16,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states.
[2024-11-08 16:20:16,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 101.
[2024-11-08 16:20:16,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 63 states have (on average 1.6507936507936507) internal successors, (104), 96 states have internal predecessors, (104), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-08 16:20:16,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 110 transitions.
[2024-11-08 16:20:16,020 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 110 transitions. Word has length 35
[2024-11-08 16:20:16,020 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:20:16,020 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 110 transitions.
[2024-11-08 16:20:16,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-08 16:20:16,020 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 110 transitions.
[2024-11-08 16:20:16,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2024-11-08 16:20:16,021 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:20:16,022 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:20:16,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0
[2024-11-08 16:20:16,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:20:16,227 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:20:16,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:20:16,227 INFO L85 PathProgramCache]: Analyzing trace with hash 393509477, now seen corresponding path program 1 times
[2024-11-08 16:20:16,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:20:16,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [285777123]
[2024-11-08 16:20:16,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:20:16,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:20:16,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:20:16,230 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:20:16,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2024-11-08 16:20:16,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:20:16,433 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 17 conjuncts are in the unsatisfiable core
[2024-11-08 16:20:16,436 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:20:16,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7
[2024-11-08 16:20:16,606 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size
[2024-11-08 16:20:16,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27
[2024-11-08 16:20:16,800 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| (_ BitVec 32))) (and (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| (select |c_#valid| |node_create_~temp~0#1.base|))) (= (_ bv0 1) (select |c_old(#valid)| |node_create_~temp~0#1.base|)))) is different from true
[2024-11-08 16:20:16,950 INFO L349 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size
[2024-11-08 16:20:16,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 28 treesize of output 36
[2024-11-08 16:20:17,278 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 7 not checked.
[2024-11-08 16:20:17,278 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 16:20:29,852 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 16:20:29,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285777123]
[2024-11-08 16:20:29,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285777123] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:20:29,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2031997220]
[2024-11-08 16:20:29,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:20:29,853 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-08 16:20:29,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/cvc4
[2024-11-08 16:20:29,854 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-08 16:20:29,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process
[2024-11-08 16:20:30,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:20:30,217 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 15 conjuncts are in the unsatisfiable core
[2024-11-08 16:20:30,220 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:20:30,281 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size
[2024-11-08 16:20:30,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20
[2024-11-08 16:20:30,365 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2024-11-08 16:20:30,366 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 11
[2024-11-08 16:20:30,643 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 16:20:30,687 INFO L349 Elim1Store]: treesize reduction 25, result has 30.6 percent of original size
[2024-11-08 16:20:30,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 29
[2024-11-08 16:20:30,910 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2024-11-08 16:20:30,911 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 24 treesize of output 20
[2024-11-08 16:20:31,168 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 16:20:31,197 INFO L349 Elim1Store]: treesize reduction 25, result has 30.6 percent of original size
[2024-11-08 16:20:31,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 38
[2024-11-08 16:20:31,971 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2024-11-08 16:20:31,971 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 16:20:32,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2031997220] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:20:32,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 16:20:32,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 17
[2024-11-08 16:20:32,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119557879]
[2024-11-08 16:20:32,146 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 16:20:32,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2024-11-08 16:20:32,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 16:20:32,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2024-11-08 16:20:32,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=4, NotChecked=38, Total=462
[2024-11-08 16:20:32,148 INFO L87 Difference]: Start difference. First operand 101 states and 110 transitions. Second operand has 18 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-11-08 16:20:38,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:20:38,120 INFO L93 Difference]: Finished difference Result 129 states and 139 transitions.
[2024-11-08 16:20:38,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2024-11-08 16:20:38,121 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 36
[2024-11-08 16:20:38,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:20:38,122 INFO L225 Difference]: With dead ends: 129
[2024-11-08 16:20:38,122 INFO L226 Difference]: Without dead ends: 129
[2024-11-08 16:20:38,123 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 87 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=142, Invalid=670, Unknown=4, NotChecked=54, Total=870
[2024-11-08 16:20:38,123 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 180 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 117 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time
[2024-11-08 16:20:38,124 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 505 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 645 Invalid, 0 Unknown, 117 Unchecked, 3.1s Time]
[2024-11-08 16:20:38,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states.
[2024-11-08 16:20:38,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 107.
[2024-11-08 16:20:38,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 69 states have (on average 1.681159420289855) internal successors, (116), 102 states have internal predecessors, (116), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-08 16:20:38,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 122 transitions.
[2024-11-08 16:20:38,129 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 122 transitions. Word has length 36
[2024-11-08 16:20:38,130 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:20:38,130 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 122 transitions.
[2024-11-08 16:20:38,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-11-08 16:20:38,130 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 122 transitions.
[2024-11-08 16:20:38,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2024-11-08 16:20:38,131 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:20:38,132 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:20:38,138 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0
[2024-11-08 16:20:38,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0
[2024-11-08 16:20:38,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:20:38,533 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] ===
[2024-11-08 16:20:38,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:20:38,533 INFO L85 PathProgramCache]: Analyzing trace with hash 393509478, now seen corresponding path program 1 times
[2024-11-08 16:20:38,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:20:38,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [615506675]
[2024-11-08 16:20:38,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:20:38,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:20:38,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:20:38,536 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:20:38,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2024-11-08 16:20:38,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:20:38,751 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 24 conjuncts are in the unsatisfiable core
[2024-11-08 16:20:38,754 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:20:38,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2024-11-08 16:20:38,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7
[2024-11-08 16:20:39,008 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 16:20:39,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9
[2024-11-08 16:20:39,054 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size
[2024-11-08 16:20:39,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27
[2024-11-08 16:20:39,262 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |node_create_~temp~0#1.base| (select |c_#length| |node_create_~temp~0#1.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |node_create_~temp~0#1.base|)))) is different from true
[2024-11-08 16:20:39,365 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 16:20:39,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9
[2024-11-08 16:20:39,416 INFO L349 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size
[2024-11-08 16:20:39,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22
[2024-11-08 16:20:39,561 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 7 not checked.
[2024-11-08 16:20:39,561 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 16:20:40,443 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 16:20:40,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615506675]
[2024-11-08 16:20:40,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615506675] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:20:40,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1283852971]
[2024-11-08 16:20:40,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:20:40,444 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-08 16:20:40,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/cvc4
[2024-11-08 16:20:40,446 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-08 16:20:40,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e386f780-8a48-4c8a-828f-edbb1145a21d/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process
[2024-11-08 16:20:40,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:20:40,915 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 17 conjuncts are in the unsatisfiable core
[2024-11-08 16:20:40,917 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:20:40,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2024-11-08 16:20:40,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3
[2024-11-08 16:20:41,262 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 16:20:41,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9
[2024-11-08 16:20:41,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3
[2024-11-08 16:20:41,765 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 16:20:41,767 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