./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-1.i --full-output --architecture 32bit


--------------------------------------------------------------------------------


Checking for memory safety (deref-memtrack)
Using default analysis
Version cf1a7837
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl --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 aa61daf361995635005a262e43d385a4b2c55dcce46079a14f1db13e5b0af9cd
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-cf1a783
[2023-11-12 02:30:57,124 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-12 02:30:57,242 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf
[2023-11-12 02:30:57,249 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-12 02:30:57,250 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-12 02:30:57,278 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-12 02:30:57,279 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-12 02:30:57,280 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-12 02:30:57,281 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-12 02:30:57,282 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-12 02:30:57,283 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-12 02:30:57,284 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-12 02:30:57,285 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-12 02:30:57,289 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-12 02:30:57,290 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-11-12 02:30:57,290 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-12 02:30:57,291 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-11-12 02:30:57,291 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-12 02:30:57,291 INFO  L153        SettingsManager]:  * Check for the main procedure if all allocated memory was freed=true
[2023-11-12 02:30:57,292 INFO  L153        SettingsManager]:  * Bitprecise bitfields=true
[2023-11-12 02:30:57,292 INFO  L153        SettingsManager]:  * SV-COMP memtrack compatibility mode=true
[2023-11-12 02:30:57,293 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-12 02:30:57,293 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2023-11-12 02:30:57,294 INFO  L153        SettingsManager]:  * Check unreachability of reach_error function=false
[2023-11-12 02:30:57,294 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-11-12 02:30:57,294 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-12 02:30:57,295 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-12 02:30:57,296 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-12 02:30:57,296 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-12 02:30:57,297 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-12 02:30:57,298 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-12 02:30:57,298 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-12 02:30:57,299 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-12 02:30:57,299 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-12 02:30:57,299 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-12 02:30:57,299 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-12 02:30:57,300 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-12 02:30:57,300 INFO  L153        SettingsManager]:  * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-11-12 02:30:57,300 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_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/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_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl
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 -> aa61daf361995635005a262e43d385a4b2c55dcce46079a14f1db13e5b0af9cd
[2023-11-12 02:30:57,653 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-12 02:30:57,698 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-12 02:30:57,700 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-12 02:30:57,702 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-12 02:30:57,702 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-12 02:30:57,704 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-1.i
[2023-11-12 02:31:00,813 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-12 02:31:01,164 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-12 02:31:01,164 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-1.i
[2023-11-12 02:31:01,188 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/data/6f49b16cd/7b34a14b3a124117bdd11028c56b2338/FLAGc2e181698
[2023-11-12 02:31:01,206 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/data/6f49b16cd/7b34a14b3a124117bdd11028c56b2338
[2023-11-12 02:31:01,211 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-12 02:31:01,215 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-12 02:31:01,217 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-12 02:31:01,217 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-12 02:31:01,223 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-12 02:31:01,224 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:31:01" (1/1) ...
[2023-11-12 02:31:01,225 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f4257f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:01, skipping insertion in model container
[2023-11-12 02:31:01,226 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:31:01" (1/1) ...
[2023-11-12 02:31:01,295 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-12 02:31:01,724 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-12 02:31:01,749 ERROR L324         MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation)
[2023-11-12 02:31:01,750 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@751ee9c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:01, skipping insertion in model container
[2023-11-12 02:31:01,750 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-12 02:31:01,751 INFO  L186        ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner
[2023-11-12 02:31:01,753 INFO  L158              Benchmark]: Toolchain (without parser) took 537.34ms. Allocated memory is still 134.2MB. Free memory was 94.2MB in the beginning and 80.2MB in the end (delta: 14.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
[2023-11-12 02:31:01,754 INFO  L158              Benchmark]: CDTParser took 0.25ms. Allocated memory is still 102.8MB. Free memory was 79.4MB in the beginning and 79.3MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB.
[2023-11-12 02:31:01,755 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 533.62ms. Allocated memory is still 134.2MB. Free memory was 93.9MB in the beginning and 80.2MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
[2023-11-12 02:31:01,757 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.25ms. Allocated memory is still 102.8MB. Free memory was 79.4MB in the beginning and 79.3MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB.
 * CACSL2BoogieTranslator took 533.62ms. Allocated memory is still 134.2MB. Free memory was 93.9MB in the beginning and 80.2MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator:
  - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax
    Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation)
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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl --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 aa61daf361995635005a262e43d385a4b2c55dcce46079a14f1db13e5b0af9cd
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-cf1a783
[2023-11-12 02:31:04,175 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-12 02:31:04,319 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf
[2023-11-12 02:31:04,327 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-12 02:31:04,331 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-12 02:31:04,375 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-12 02:31:04,376 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-12 02:31:04,377 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-12 02:31:04,378 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-12 02:31:04,383 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-12 02:31:04,384 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-12 02:31:04,384 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-12 02:31:04,385 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-12 02:31:04,387 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-12 02:31:04,387 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-11-12 02:31:04,388 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-12 02:31:04,388 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-11-12 02:31:04,389 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-12 02:31:04,389 INFO  L153        SettingsManager]:  * Check for the main procedure if all allocated memory was freed=true
[2023-11-12 02:31:04,390 INFO  L153        SettingsManager]:  * Bitprecise bitfields=true
[2023-11-12 02:31:04,391 INFO  L153        SettingsManager]:  * SV-COMP memtrack compatibility mode=true
[2023-11-12 02:31:04,391 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-12 02:31:04,392 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2023-11-12 02:31:04,392 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2023-11-12 02:31:04,393 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2023-11-12 02:31:04,393 INFO  L153        SettingsManager]:  * Check unreachability of reach_error function=false
[2023-11-12 02:31:04,394 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-11-12 02:31:04,394 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-12 02:31:04,395 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-12 02:31:04,396 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-12 02:31:04,397 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-12 02:31:04,398 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-12 02:31:04,398 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-12 02:31:04,399 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-12 02:31:04,399 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2023-11-12 02:31:04,399 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2023-11-12 02:31:04,400 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-12 02:31:04,400 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-12 02:31:04,400 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-12 02:31:04,401 INFO  L153        SettingsManager]:  * Logic for external solver=AUFBV
[2023-11-12 02:31:04,402 INFO  L153        SettingsManager]:  * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-11-12 02:31:04,402 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_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/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_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl
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 -> aa61daf361995635005a262e43d385a4b2c55dcce46079a14f1db13e5b0af9cd
[2023-11-12 02:31:04,823 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-12 02:31:04,858 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-12 02:31:04,861 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-12 02:31:04,862 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-12 02:31:04,863 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-12 02:31:04,864 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-1.i
[2023-11-12 02:31:07,961 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-12 02:31:08,341 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-12 02:31:08,342 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-1.i
[2023-11-12 02:31:08,366 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/data/96b5700c1/9e0fd03ae7d3422cbe6a557e8bef785c/FLAGd82f06886
[2023-11-12 02:31:08,384 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/data/96b5700c1/9e0fd03ae7d3422cbe6a557e8bef785c
[2023-11-12 02:31:08,389 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-12 02:31:08,391 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-12 02:31:08,394 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-12 02:31:08,394 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-12 02:31:08,399 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-12 02:31:08,399 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:31:08" (1/1) ...
[2023-11-12 02:31:08,400 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c96daec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:08, skipping insertion in model container
[2023-11-12 02:31:08,401 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:31:08" (1/1) ...
[2023-11-12 02:31:08,470 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-12 02:31:08,914 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-12 02:31:08,945 INFO  L199         MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution]
[2023-11-12 02:31:08,961 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-12 02:31:09,037 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-12 02:31:09,045 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-12 02:31:09,091 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-12 02:31:09,134 WARN  L672               CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler.
[2023-11-12 02:31:09,142 INFO  L206         MainTranslator]: Completed translation
[2023-11-12 02:31:09,142 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:09 WrapperNode
[2023-11-12 02:31:09,142 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-12 02:31:09,143 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-12 02:31:09,144 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-12 02:31:09,144 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-12 02:31:09,151 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:09" (1/1) ...
[2023-11-12 02:31:09,175 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:09" (1/1) ...
[2023-11-12 02:31:09,212 INFO  L138                Inliner]: procedures = 165, calls = 70, calls flagged for inlining = 24, calls inlined = 18, statements flattened = 121
[2023-11-12 02:31:09,213 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-12 02:31:09,220 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-12 02:31:09,220 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-12 02:31:09,221 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-12 02:31:09,233 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:09" (1/1) ...
[2023-11-12 02:31:09,234 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:09" (1/1) ...
[2023-11-12 02:31:09,245 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:09" (1/1) ...
[2023-11-12 02:31:09,250 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:09" (1/1) ...
[2023-11-12 02:31:09,272 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:09" (1/1) ...
[2023-11-12 02:31:09,291 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:09" (1/1) ...
[2023-11-12 02:31:09,294 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:09" (1/1) ...
[2023-11-12 02:31:09,306 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:09" (1/1) ...
[2023-11-12 02:31:09,311 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-12 02:31:09,312 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-12 02:31:09,312 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-12 02:31:09,312 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-12 02:31:09,313 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:09" (1/1) ...
[2023-11-12 02:31:09,324 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-12 02:31:09,337 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/z3
[2023-11-12 02:31:09,350 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-12 02:31:09,401 INFO  L130     BoogieDeclarations]: Found specification of procedure read~intINTTYPE4
[2023-11-12 02:31:09,402 INFO  L130     BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD
[2023-11-12 02:31:09,402 INFO  L138     BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD
[2023-11-12 02:31:09,402 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_malloc
[2023-11-12 02:31:09,402 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_malloc
[2023-11-12 02:31:09,402 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2023-11-12 02:31:09,403 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-12 02:31:09,403 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2023-11-12 02:31:09,403 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2023-11-12 02:31:09,403 INFO  L130     BoogieDeclarations]: Found specification of procedure write~intINTTYPE4
[2023-11-12 02:31:09,403 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-11-12 02:31:09,404 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~$Pointer$
[2023-11-12 02:31:09,404 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-12 02:31:09,404 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-12 02:31:09,393 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-12 02:31:09,617 INFO  L236             CfgBuilder]: Building ICFG
[2023-11-12 02:31:09,619 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-12 02:31:10,076 INFO  L277             CfgBuilder]: Performing block encoding
[2023-11-12 02:31:10,083 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-12 02:31:10,084 INFO  L302             CfgBuilder]: Removed 0 assume(true) statements.
[2023-11-12 02:31:10,086 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:31:10 BoogieIcfgContainer
[2023-11-12 02:31:10,086 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-12 02:31:10,089 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-12 02:31:10,089 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-12 02:31:10,093 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-12 02:31:10,093 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:31:08" (1/3) ...
[2023-11-12 02:31:10,094 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cd38c73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:31:10, skipping insertion in model container
[2023-11-12 02:31:10,094 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:09" (2/3) ...
[2023-11-12 02:31:10,094 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cd38c73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:31:10, skipping insertion in model container
[2023-11-12 02:31:10,095 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:31:10" (3/3) ...
[2023-11-12 02:31:10,096 INFO  L112   eAbstractionObserver]: Analyzing ICFG memleaks_test22_1-1.i
[2023-11-12 02:31:10,115 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-12 02:31:10,116 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations.
[2023-11-12 02:31:10,166 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-12 02:31:10,173 INFO  L357      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, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@1fc5ce21, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-11-12 02:31:10,173 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 25 error locations.
[2023-11-12 02:31:10,178 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 86 states, 56 states have (on average 1.6071428571428572) internal successors, (90), 82 states have internal predecessors, (90), 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)
[2023-11-12 02:31:10,185 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2023-11-12 02:31:10,186 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-12 02:31:10,187 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-12 02:31:10,187 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2023-11-12 02:31:10,194 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-12 02:31:10,194 INFO  L85        PathProgramCache]: Analyzing trace with hash 1571354969, now seen corresponding path program 1 times
[2023-11-12 02:31:10,207 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-12 02:31:10,208 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [39554612]
[2023-11-12 02:31:10,208 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:31:10,208 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:10,209 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat
[2023-11-12 02:31:10,220 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-12 02:31:10,237 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process
[2023-11-12 02:31:10,344 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-12 02:31:10,347 INFO  L262         TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-12 02:31:10,353 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-12 02:31:10,431 INFO  L351             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
[2023-11-12 02:31:10,511 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-12 02:31:10,511 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-12 02:31:10,512 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-11-12 02:31:10,512 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [39554612]
[2023-11-12 02:31:10,513 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [39554612] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-12 02:31:10,513 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-12 02:31:10,513 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-12 02:31:10,515 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359292723]
[2023-11-12 02:31:10,515 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-12 02:31:10,519 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-12 02:31:10,520 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-11-12 02:31:10,555 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-12 02:31:10,556 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2023-11-12 02:31:10,559 INFO  L87              Difference]: Start difference. First operand  has 86 states, 56 states have (on average 1.6071428571428572) internal successors, (90), 82 states have internal predecessors, (90), 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) Second operand  has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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)
[2023-11-12 02:31:11,019 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-12 02:31:11,020 INFO  L93              Difference]: Finished difference Result 105 states and 118 transitions.
[2023-11-12 02:31:11,021 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-12 02:31:11,022 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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 10
[2023-11-12 02:31:11,023 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-12 02:31:11,033 INFO  L225             Difference]: With dead ends: 105
[2023-11-12 02:31:11,033 INFO  L226             Difference]: Without dead ends: 103
[2023-11-12 02:31:11,035 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2023-11-12 02:31:11,045 INFO  L413           NwaCegarLoop]: 83 mSDtfsCounter, 27 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2023-11-12 02:31:11,046 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 305 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2023-11-12 02:31:11,063 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 103 states.
[2023-11-12 02:31:11,093 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 89.
[2023-11-12 02:31:11,095 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 89 states, 59 states have (on average 1.576271186440678) internal successors, (93), 84 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3)
[2023-11-12 02:31:11,100 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions.
[2023-11-12 02:31:11,101 INFO  L78                 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 10
[2023-11-12 02:31:11,101 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-12 02:31:11,102 INFO  L495      AbstractCegarLoop]: Abstraction has 89 states and 98 transitions.
[2023-11-12 02:31:11,102 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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)
[2023-11-12 02:31:11,102 INFO  L276                IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions.
[2023-11-12 02:31:11,103 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2023-11-12 02:31:11,104 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-12 02:31:11,104 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-12 02:31:11,117 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0
[2023-11-12 02:31:11,315 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:11,315 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2023-11-12 02:31:11,316 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-12 02:31:11,316 INFO  L85        PathProgramCache]: Analyzing trace with hash 1599984120, now seen corresponding path program 1 times
[2023-11-12 02:31:11,317 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-12 02:31:11,317 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [484489952]
[2023-11-12 02:31:11,317 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:31:11,318 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:11,318 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat
[2023-11-12 02:31:11,319 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-12 02:31:11,331 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process
[2023-11-12 02:31:11,390 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-12 02:31:11,391 INFO  L262         TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-11-12 02:31:11,393 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-12 02:31:11,456 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-12 02:31:11,456 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-12 02:31:11,456 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-11-12 02:31:11,456 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [484489952]
[2023-11-12 02:31:11,457 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [484489952] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-12 02:31:11,457 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-12 02:31:11,457 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-12 02:31:11,457 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470333941]
[2023-11-12 02:31:11,458 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-12 02:31:11,459 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-12 02:31:11,459 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-11-12 02:31:11,460 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-12 02:31:11,460 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-12 02:31:11,460 INFO  L87              Difference]: Start difference. First operand 89 states and 98 transitions. Second operand  has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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)
[2023-11-12 02:31:11,500 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-12 02:31:11,501 INFO  L93              Difference]: Finished difference Result 88 states and 96 transitions.
[2023-11-12 02:31:11,501 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-12 02:31:11,501 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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 10
[2023-11-12 02:31:11,502 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-12 02:31:11,503 INFO  L225             Difference]: With dead ends: 88
[2023-11-12 02:31:11,503 INFO  L226             Difference]: Without dead ends: 88
[2023-11-12 02:31:11,503 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-12 02:31:11,505 INFO  L413           NwaCegarLoop]: 93 mSDtfsCounter, 0 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-12 02:31:11,505 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 358 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-12 02:31:11,507 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 88 states.
[2023-11-12 02:31:11,512 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87.
[2023-11-12 02:31:11,513 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 87 states, 58 states have (on average 1.5517241379310345) internal successors, (90), 82 states have internal predecessors, (90), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3)
[2023-11-12 02:31:11,514 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions.
[2023-11-12 02:31:11,514 INFO  L78                 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 10
[2023-11-12 02:31:11,515 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-12 02:31:11,515 INFO  L495      AbstractCegarLoop]: Abstraction has 87 states and 95 transitions.
[2023-11-12 02:31:11,515 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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)
[2023-11-12 02:31:11,515 INFO  L276                IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions.
[2023-11-12 02:31:11,516 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2023-11-12 02:31:11,516 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-12 02:31:11,516 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-12 02:31:11,532 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0
[2023-11-12 02:31:11,727 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:11,727 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2023-11-12 02:31:11,728 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-12 02:31:11,728 INFO  L85        PathProgramCache]: Analyzing trace with hash 1467363832, now seen corresponding path program 1 times
[2023-11-12 02:31:11,728 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-12 02:31:11,729 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1812746405]
[2023-11-12 02:31:11,729 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:31:11,729 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:11,729 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat
[2023-11-12 02:31:11,731 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-12 02:31:11,732 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process
[2023-11-12 02:31:11,819 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-12 02:31:11,821 INFO  L262         TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 13 conjunts are in the unsatisfiable core
[2023-11-12 02:31:11,838 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-12 02:31:11,864 INFO  L351             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
[2023-11-12 02:31:12,004 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-12 02:31:12,004 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-12 02:31:12,010 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-11-12 02:31:12,010 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1812746405]
[2023-11-12 02:31:12,011 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1812746405] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-12 02:31:12,011 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-12 02:31:12,011 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-12 02:31:12,011 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333061554]
[2023-11-12 02:31:12,011 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-12 02:31:12,012 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-12 02:31:12,012 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-11-12 02:31:12,013 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-12 02:31:12,013 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-12 02:31:12,013 INFO  L87              Difference]: Start difference. First operand 87 states and 95 transitions. Second operand  has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-11-12 02:31:12,463 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-12 02:31:12,463 INFO  L93              Difference]: Finished difference Result 87 states and 95 transitions.
[2023-11-12 02:31:12,465 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-12 02:31:12,465 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11
[2023-11-12 02:31:12,466 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-12 02:31:12,467 INFO  L225             Difference]: With dead ends: 87
[2023-11-12 02:31:12,467 INFO  L226             Difference]: Without dead ends: 87
[2023-11-12 02:31:12,467 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72
[2023-11-12 02:31:12,468 INFO  L413           NwaCegarLoop]: 77 mSDtfsCounter, 24 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2023-11-12 02:31:12,469 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 376 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2023-11-12 02:31:12,470 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 87 states.
[2023-11-12 02:31:12,476 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86.
[2023-11-12 02:31:12,481 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 86 states, 58 states have (on average 1.5344827586206897) internal successors, (89), 81 states have internal predecessors, (89), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3)
[2023-11-12 02:31:12,487 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions.
[2023-11-12 02:31:12,487 INFO  L78                 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 11
[2023-11-12 02:31:12,487 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-12 02:31:12,487 INFO  L495      AbstractCegarLoop]: Abstraction has 86 states and 94 transitions.
[2023-11-12 02:31:12,488 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-11-12 02:31:12,488 INFO  L276                IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions.
[2023-11-12 02:31:12,488 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2023-11-12 02:31:12,488 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-12 02:31:12,489 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-12 02:31:12,511 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0
[2023-11-12 02:31:12,703 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:12,703 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2023-11-12 02:31:12,704 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-12 02:31:12,704 INFO  L85        PathProgramCache]: Analyzing trace with hash -1756388193, now seen corresponding path program 1 times
[2023-11-12 02:31:12,704 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-12 02:31:12,704 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [57841835]
[2023-11-12 02:31:12,705 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:31:12,705 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:12,705 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat
[2023-11-12 02:31:12,706 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-12 02:31:12,707 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process
[2023-11-12 02:31:12,780 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-12 02:31:12,782 INFO  L262         TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-11-12 02:31:12,784 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-12 02:31:12,821 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-12 02:31:12,821 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-12 02:31:12,822 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-11-12 02:31:12,822 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [57841835]
[2023-11-12 02:31:12,822 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [57841835] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-12 02:31:12,822 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-12 02:31:12,822 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-12 02:31:12,822 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431444442]
[2023-11-12 02:31:12,822 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-12 02:31:12,823 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-12 02:31:12,823 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-11-12 02:31:12,824 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-12 02:31:12,824 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-12 02:31:12,824 INFO  L87              Difference]: Start difference. First operand 86 states and 94 transitions. Second operand  has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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)
[2023-11-12 02:31:12,861 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-12 02:31:12,861 INFO  L93              Difference]: Finished difference Result 87 states and 94 transitions.
[2023-11-12 02:31:12,862 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-12 02:31:12,862 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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 12
[2023-11-12 02:31:12,862 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-12 02:31:12,863 INFO  L225             Difference]: With dead ends: 87
[2023-11-12 02:31:12,863 INFO  L226             Difference]: Without dead ends: 87
[2023-11-12 02:31:12,863 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-12 02:31:12,864 INFO  L413           NwaCegarLoop]: 87 mSDtfsCounter, 16 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-12 02:31:12,865 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 325 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-12 02:31:12,866 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 87 states.
[2023-11-12 02:31:12,871 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86.
[2023-11-12 02:31:12,872 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 86 states, 58 states have (on average 1.5172413793103448) internal successors, (88), 81 states have internal predecessors, (88), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3)
[2023-11-12 02:31:12,873 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 93 transitions.
[2023-11-12 02:31:12,873 INFO  L78                 Accepts]: Start accepts. Automaton has 86 states and 93 transitions. Word has length 12
[2023-11-12 02:31:12,873 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-12 02:31:12,873 INFO  L495      AbstractCegarLoop]: Abstraction has 86 states and 93 transitions.
[2023-11-12 02:31:12,873 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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)
[2023-11-12 02:31:12,874 INFO  L276                IsEmpty]: Start isEmpty. Operand 86 states and 93 transitions.
[2023-11-12 02:31:12,874 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2023-11-12 02:31:12,874 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-12 02:31:12,874 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-12 02:31:12,894 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0
[2023-11-12 02:31:13,085 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:13,086 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2023-11-12 02:31:13,086 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-12 02:31:13,086 INFO  L85        PathProgramCache]: Analyzing trace with hash -13577858, now seen corresponding path program 1 times
[2023-11-12 02:31:13,086 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-12 02:31:13,087 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1835257898]
[2023-11-12 02:31:13,087 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:31:13,087 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:13,087 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat
[2023-11-12 02:31:13,088 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-12 02:31:13,093 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process
[2023-11-12 02:31:13,174 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-12 02:31:13,176 INFO  L262         TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-11-12 02:31:13,177 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-12 02:31:13,215 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-12 02:31:13,216 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-12 02:31:13,216 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-11-12 02:31:13,216 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1835257898]
[2023-11-12 02:31:13,216 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1835257898] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-12 02:31:13,216 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-12 02:31:13,216 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-12 02:31:13,216 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022057076]
[2023-11-12 02:31:13,217 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-12 02:31:13,217 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-12 02:31:13,217 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-11-12 02:31:13,217 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-12 02:31:13,218 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-12 02:31:13,218 INFO  L87              Difference]: Start difference. First operand 86 states and 93 transitions. Second operand  has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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)
[2023-11-12 02:31:13,267 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-12 02:31:13,267 INFO  L93              Difference]: Finished difference Result 129 states and 138 transitions.
[2023-11-12 02:31:13,267 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-12 02:31:13,268 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 12
[2023-11-12 02:31:13,268 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-12 02:31:13,269 INFO  L225             Difference]: With dead ends: 129
[2023-11-12 02:31:13,269 INFO  L226             Difference]: Without dead ends: 129
[2023-11-12 02:31:13,270 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-12 02:31:13,271 INFO  L413           NwaCegarLoop]: 87 mSDtfsCounter, 46 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-12 02:31:13,271 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 257 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-12 02:31:13,272 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 129 states.
[2023-11-12 02:31:13,278 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 88.
[2023-11-12 02:31:13,278 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 88 states, 60 states have (on average 1.5) internal successors, (90), 83 states have internal predecessors, (90), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3)
[2023-11-12 02:31:13,279 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 95 transitions.
[2023-11-12 02:31:13,279 INFO  L78                 Accepts]: Start accepts. Automaton has 88 states and 95 transitions. Word has length 12
[2023-11-12 02:31:13,279 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-12 02:31:13,280 INFO  L495      AbstractCegarLoop]: Abstraction has 88 states and 95 transitions.
[2023-11-12 02:31:13,280 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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)
[2023-11-12 02:31:13,280 INFO  L276                IsEmpty]: Start isEmpty. Operand 88 states and 95 transitions.
[2023-11-12 02:31:13,286 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2023-11-12 02:31:13,286 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-12 02:31:13,286 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-12 02:31:13,304 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0
[2023-11-12 02:31:13,504 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:13,504 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2023-11-12 02:31:13,505 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-12 02:31:13,505 INFO  L85        PathProgramCache]: Analyzing trace with hash -757624885, now seen corresponding path program 1 times
[2023-11-12 02:31:13,505 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-12 02:31:13,505 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1121499471]
[2023-11-12 02:31:13,505 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:31:13,505 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:13,506 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat
[2023-11-12 02:31:13,507 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-12 02:31:13,511 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process
[2023-11-12 02:31:13,585 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-12 02:31:13,587 INFO  L262         TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-11-12 02:31:13,589 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-12 02:31:13,677 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-12 02:31:13,678 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-12 02:31:13,678 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-11-12 02:31:13,678 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1121499471]
[2023-11-12 02:31:13,678 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1121499471] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-12 02:31:13,678 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-12 02:31:13,678 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-12 02:31:13,679 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911358039]
[2023-11-12 02:31:13,679 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-12 02:31:13,679 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-12 02:31:13,680 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-11-12 02:31:13,680 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-12 02:31:13,680 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-12 02:31:13,680 INFO  L87              Difference]: Start difference. First operand 88 states and 95 transitions. Second operand  has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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)
[2023-11-12 02:31:13,743 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-12 02:31:13,744 INFO  L93              Difference]: Finished difference Result 96 states and 102 transitions.
[2023-11-12 02:31:13,744 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-12 02:31:13,744 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 15
[2023-11-12 02:31:13,745 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-12 02:31:13,745 INFO  L225             Difference]: With dead ends: 96
[2023-11-12 02:31:13,745 INFO  L226             Difference]: Without dead ends: 96
[2023-11-12 02:31:13,746 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2023-11-12 02:31:13,748 INFO  L413           NwaCegarLoop]: 87 mSDtfsCounter, 12 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-12 02:31:13,748 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 344 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-12 02:31:13,750 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 96 states.
[2023-11-12 02:31:13,768 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 91.
[2023-11-12 02:31:13,769 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 91 states, 63 states have (on average 1.4761904761904763) internal successors, (93), 86 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3)
[2023-11-12 02:31:13,769 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 98 transitions.
[2023-11-12 02:31:13,770 INFO  L78                 Accepts]: Start accepts. Automaton has 91 states and 98 transitions. Word has length 15
[2023-11-12 02:31:13,770 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-12 02:31:13,770 INFO  L495      AbstractCegarLoop]: Abstraction has 91 states and 98 transitions.
[2023-11-12 02:31:13,770 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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)
[2023-11-12 02:31:13,770 INFO  L276                IsEmpty]: Start isEmpty. Operand 91 states and 98 transitions.
[2023-11-12 02:31:13,771 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2023-11-12 02:31:13,771 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-12 02:31:13,771 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-12 02:31:13,787 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0
[2023-11-12 02:31:13,971 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:13,972 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2023-11-12 02:31:13,972 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-12 02:31:13,972 INFO  L85        PathProgramCache]: Analyzing trace with hash 705966087, now seen corresponding path program 1 times
[2023-11-12 02:31:13,972 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-12 02:31:13,973 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1199416214]
[2023-11-12 02:31:13,973 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:31:13,973 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:13,973 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat
[2023-11-12 02:31:13,974 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-12 02:31:13,978 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process
[2023-11-12 02:31:14,047 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-12 02:31:14,049 INFO  L262         TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-11-12 02:31:14,051 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-12 02:31:14,088 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-12 02:31:14,088 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-12 02:31:14,088 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-11-12 02:31:14,088 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1199416214]
[2023-11-12 02:31:14,089 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1199416214] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-12 02:31:14,089 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-12 02:31:14,089 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-12 02:31:14,089 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101316506]
[2023-11-12 02:31:14,089 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-12 02:31:14,090 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-12 02:31:14,090 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-11-12 02:31:14,090 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-12 02:31:14,090 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2023-11-12 02:31:14,091 INFO  L87              Difference]: Start difference. First operand 91 states and 98 transitions. Second operand  has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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)
[2023-11-12 02:31:14,116 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-12 02:31:14,116 INFO  L93              Difference]: Finished difference Result 92 states and 99 transitions.
[2023-11-12 02:31:14,117 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-12 02:31:14,117 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 16
[2023-11-12 02:31:14,117 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-12 02:31:14,118 INFO  L225             Difference]: With dead ends: 92
[2023-11-12 02:31:14,118 INFO  L226             Difference]: Without dead ends: 92
[2023-11-12 02:31:14,118 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2023-11-12 02:31:14,119 INFO  L413           NwaCegarLoop]: 87 mSDtfsCounter, 3 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-12 02:31:14,120 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 172 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-12 02:31:14,120 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 92 states.
[2023-11-12 02:31:14,123 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92.
[2023-11-12 02:31:14,124 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 92 states, 64 states have (on average 1.46875) internal successors, (94), 87 states have internal predecessors, (94), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3)
[2023-11-12 02:31:14,125 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 99 transitions.
[2023-11-12 02:31:14,125 INFO  L78                 Accepts]: Start accepts. Automaton has 92 states and 99 transitions. Word has length 16
[2023-11-12 02:31:14,125 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-12 02:31:14,125 INFO  L495      AbstractCegarLoop]: Abstraction has 92 states and 99 transitions.
[2023-11-12 02:31:14,126 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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)
[2023-11-12 02:31:14,126 INFO  L276                IsEmpty]: Start isEmpty. Operand 92 states and 99 transitions.
[2023-11-12 02:31:14,127 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2023-11-12 02:31:14,127 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-12 02:31:14,127 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-12 02:31:14,145 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0
[2023-11-12 02:31:14,338 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:14,339 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2023-11-12 02:31:14,339 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-12 02:31:14,339 INFO  L85        PathProgramCache]: Analyzing trace with hash 350853090, now seen corresponding path program 1 times
[2023-11-12 02:31:14,339 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-12 02:31:14,339 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1294949024]
[2023-11-12 02:31:14,340 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:31:14,340 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:14,340 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat
[2023-11-12 02:31:14,341 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-12 02:31:14,348 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process
[2023-11-12 02:31:14,427 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-12 02:31:14,430 INFO  L262         TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-11-12 02:31:14,432 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-12 02:31:14,474 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-12 02:31:14,474 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-12 02:31:14,534 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-12 02:31:14,535 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-11-12 02:31:14,535 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1294949024]
[2023-11-12 02:31:14,535 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1294949024] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-12 02:31:14,535 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-11-12 02:31:14,535 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8
[2023-11-12 02:31:14,535 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801200609]
[2023-11-12 02:31:14,535 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-11-12 02:31:14,536 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-12 02:31:14,536 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-11-12 02:31:14,537 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-12 02:31:14,537 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-11-12 02:31:14,537 INFO  L87              Difference]: Start difference. First operand 92 states and 99 transitions. Second operand  has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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)
[2023-11-12 02:31:14,616 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-12 02:31:14,616 INFO  L93              Difference]: Finished difference Result 95 states and 102 transitions.
[2023-11-12 02:31:14,617 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-12 02:31:14,617 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17
[2023-11-12 02:31:14,617 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-12 02:31:14,618 INFO  L225             Difference]: With dead ends: 95
[2023-11-12 02:31:14,618 INFO  L226             Difference]: Without dead ends: 95
[2023-11-12 02:31:14,618 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90
[2023-11-12 02:31:14,619 INFO  L413           NwaCegarLoop]: 87 mSDtfsCounter, 10 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-12 02:31:14,619 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 341 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-12 02:31:14,620 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 95 states.
[2023-11-12 02:31:14,622 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95.
[2023-11-12 02:31:14,623 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 95 states, 67 states have (on average 1.4477611940298507) internal successors, (97), 90 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3)
[2023-11-12 02:31:14,624 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 102 transitions.
[2023-11-12 02:31:14,624 INFO  L78                 Accepts]: Start accepts. Automaton has 95 states and 102 transitions. Word has length 17
[2023-11-12 02:31:14,624 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-12 02:31:14,624 INFO  L495      AbstractCegarLoop]: Abstraction has 95 states and 102 transitions.
[2023-11-12 02:31:14,624 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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)
[2023-11-12 02:31:14,625 INFO  L276                IsEmpty]: Start isEmpty. Operand 95 states and 102 transitions.
[2023-11-12 02:31:14,625 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2023-11-12 02:31:14,625 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-12 02:31:14,626 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-12 02:31:14,637 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0
[2023-11-12 02:31:14,837 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:14,838 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2023-11-12 02:31:14,838 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-12 02:31:14,838 INFO  L85        PathProgramCache]: Analyzing trace with hash 2068405965, now seen corresponding path program 1 times
[2023-11-12 02:31:14,838 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-12 02:31:14,838 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1282167267]
[2023-11-12 02:31:14,838 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:31:14,839 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:14,839 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat
[2023-11-12 02:31:14,840 INFO  L229       MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-12 02:31:14,841 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process
[2023-11-12 02:31:14,919 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-12 02:31:14,921 INFO  L262         TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-11-12 02:31:14,924 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-12 02:31:14,967 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-12 02:31:14,967 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-12 02:31:14,968 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-11-12 02:31:14,968 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1282167267]
[2023-11-12 02:31:14,968 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1282167267] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-12 02:31:14,968 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-12 02:31:14,968 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-12 02:31:14,968 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999384273]
[2023-11-12 02:31:14,969 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-12 02:31:14,969 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-12 02:31:14,969 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-11-12 02:31:14,970 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-12 02:31:14,970 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-12 02:31:14,970 INFO  L87              Difference]: Start difference. First operand 95 states and 102 transitions. Second operand  has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-11-12 02:31:15,138 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-12 02:31:15,138 INFO  L93              Difference]: Finished difference Result 98 states and 104 transitions.
[2023-11-12 02:31:15,138 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-12 02:31:15,138 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17
[2023-11-12 02:31:15,139 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-12 02:31:15,139 INFO  L225             Difference]: With dead ends: 98
[2023-11-12 02:31:15,139 INFO  L226             Difference]: Without dead ends: 86
[2023-11-12 02:31:15,140 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-12 02:31:15,140 INFO  L413           NwaCegarLoop]: 83 mSDtfsCounter, 8 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-11-12 02:31:15,141 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 196 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-11-12 02:31:15,141 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 86 states.
[2023-11-12 02:31:15,143 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86.
[2023-11-12 02:31:15,144 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 86 states, 59 states have (on average 1.4915254237288136) internal successors, (88), 82 states have internal predecessors, (88), 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)
[2023-11-12 02:31:15,144 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 92 transitions.
[2023-11-12 02:31:15,145 INFO  L78                 Accepts]: Start accepts. Automaton has 86 states and 92 transitions. Word has length 17
[2023-11-12 02:31:15,145 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-12 02:31:15,145 INFO  L495      AbstractCegarLoop]: Abstraction has 86 states and 92 transitions.
[2023-11-12 02:31:15,145 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-11-12 02:31:15,145 INFO  L276                IsEmpty]: Start isEmpty. Operand 86 states and 92 transitions.
[2023-11-12 02:31:15,146 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2023-11-12 02:31:15,146 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-12 02:31:15,146 INFO  L195           NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-12 02:31:15,161 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0
[2023-11-12 02:31:15,356 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:15,356 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2023-11-12 02:31:15,357 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-12 02:31:15,357 INFO  L85        PathProgramCache]: Analyzing trace with hash -400765241, now seen corresponding path program 2 times
[2023-11-12 02:31:15,357 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-12 02:31:15,357 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [768633084]
[2023-11-12 02:31:15,358 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2023-11-12 02:31:15,358 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:15,358 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat
[2023-11-12 02:31:15,359 INFO  L229       MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-12 02:31:15,360 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process
[2023-11-12 02:31:15,480 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s)
[2023-11-12 02:31:15,481 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2023-11-12 02:31:15,483 INFO  L262         TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-12 02:31:15,488 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-12 02:31:15,493 INFO  L351             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
[2023-11-12 02:31:15,597 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2023-11-12 02:31:15,597 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-12 02:31:15,597 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-11-12 02:31:15,597 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [768633084]
[2023-11-12 02:31:15,597 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [768633084] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-12 02:31:15,597 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-12 02:31:15,598 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-12 02:31:15,598 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25148327]
[2023-11-12 02:31:15,598 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-12 02:31:15,598 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-12 02:31:15,598 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-11-12 02:31:15,599 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-12 02:31:15,599 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2023-11-12 02:31:15,599 INFO  L87              Difference]: Start difference. First operand 86 states and 92 transitions. Second operand  has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-11-12 02:31:16,015 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-12 02:31:16,015 INFO  L93              Difference]: Finished difference Result 85 states and 91 transitions.
[2023-11-12 02:31:16,016 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-11-12 02:31:16,016 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20
[2023-11-12 02:31:16,016 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-12 02:31:16,017 INFO  L225             Difference]: With dead ends: 85
[2023-11-12 02:31:16,017 INFO  L226             Difference]: Without dead ends: 85
[2023-11-12 02:31:16,017 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110
[2023-11-12 02:31:16,018 INFO  L413           NwaCegarLoop]: 75 mSDtfsCounter, 25 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2023-11-12 02:31:16,018 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 363 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2023-11-12 02:31:16,018 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 85 states.
[2023-11-12 02:31:16,020 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85.
[2023-11-12 02:31:16,021 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 85 states, 59 states have (on average 1.4745762711864407) internal successors, (87), 81 states have internal predecessors, (87), 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)
[2023-11-12 02:31:16,021 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions.
[2023-11-12 02:31:16,021 INFO  L78                 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 20
[2023-11-12 02:31:16,022 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-12 02:31:16,022 INFO  L495      AbstractCegarLoop]: Abstraction has 85 states and 91 transitions.
[2023-11-12 02:31:16,022 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-11-12 02:31:16,022 INFO  L276                IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions.
[2023-11-12 02:31:16,022 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2023-11-12 02:31:16,023 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-12 02:31:16,023 INFO  L195           NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-12 02:31:16,040 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0
[2023-11-12 02:31:16,223 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:16,223 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2023-11-12 02:31:16,224 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-12 02:31:16,224 INFO  L85        PathProgramCache]: Analyzing trace with hash -400765240, now seen corresponding path program 1 times
[2023-11-12 02:31:16,224 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-12 02:31:16,224 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [98370824]
[2023-11-12 02:31:16,224 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:31:16,225 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:16,225 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat
[2023-11-12 02:31:16,226 INFO  L229       MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-12 02:31:16,229 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process
[2023-11-12 02:31:16,327 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-12 02:31:16,330 INFO  L262         TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-11-12 02:31:16,332 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-12 02:31:16,469 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-12 02:31:16,469 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-12 02:31:16,693 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-12 02:31:16,694 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-11-12 02:31:16,694 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [98370824]
[2023-11-12 02:31:16,694 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [98370824] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-12 02:31:16,694 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-11-12 02:31:16,694 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14
[2023-11-12 02:31:16,694 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903943993]
[2023-11-12 02:31:16,694 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-11-12 02:31:16,695 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2023-11-12 02:31:16,695 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-11-12 02:31:16,696 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2023-11-12 02:31:16,696 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182
[2023-11-12 02:31:16,696 INFO  L87              Difference]: Start difference. First operand 85 states and 91 transitions. Second operand  has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 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)
[2023-11-12 02:31:17,006 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-12 02:31:17,013 INFO  L93              Difference]: Finished difference Result 91 states and 97 transitions.
[2023-11-12 02:31:17,014 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2023-11-12 02:31:17,014 INFO  L78                 Accepts]: Start accepts. Automaton has  has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 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 20
[2023-11-12 02:31:17,015 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-12 02:31:17,016 INFO  L225             Difference]: With dead ends: 91
[2023-11-12 02:31:17,016 INFO  L226             Difference]: Without dead ends: 91
[2023-11-12 02:31:17,017 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=131, Invalid=211, Unknown=0, NotChecked=0, Total=342
[2023-11-12 02:31:17,018 INFO  L413           NwaCegarLoop]: 84 mSDtfsCounter, 8 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-12 02:31:17,019 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 656 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-12 02:31:17,020 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 91 states.
[2023-11-12 02:31:17,025 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91.
[2023-11-12 02:31:17,027 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 91 states, 65 states have (on average 1.4307692307692308) internal successors, (93), 87 states have internal predecessors, (93), 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)
[2023-11-12 02:31:17,029 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 97 transitions.
[2023-11-12 02:31:17,029 INFO  L78                 Accepts]: Start accepts. Automaton has 91 states and 97 transitions. Word has length 20
[2023-11-12 02:31:17,030 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-12 02:31:17,030 INFO  L495      AbstractCegarLoop]: Abstraction has 91 states and 97 transitions.
[2023-11-12 02:31:17,031 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 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)
[2023-11-12 02:31:17,031 INFO  L276                IsEmpty]: Start isEmpty. Operand 91 states and 97 transitions.
[2023-11-12 02:31:17,032 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2023-11-12 02:31:17,032 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-12 02:31:17,032 INFO  L195           NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-12 02:31:17,045 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0
[2023-11-12 02:31:17,240 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:17,240 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2023-11-12 02:31:17,241 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-12 02:31:17,241 INFO  L85        PathProgramCache]: Analyzing trace with hash -1067210520, now seen corresponding path program 2 times
[2023-11-12 02:31:17,241 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-12 02:31:17,241 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1322892308]
[2023-11-12 02:31:17,241 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2023-11-12 02:31:17,242 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:17,242 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat
[2023-11-12 02:31:17,243 INFO  L229       MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-12 02:31:17,244 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process
[2023-11-12 02:31:17,348 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s)
[2023-11-12 02:31:17,349 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2023-11-12 02:31:17,351 INFO  L262         TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 23 conjunts are in the unsatisfiable core
[2023-11-12 02:31:17,356 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-12 02:31:17,371 INFO  L351             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
[2023-11-12 02:31:17,675 INFO  L134       CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked.
[2023-11-12 02:31:17,675 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-12 02:31:17,675 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-11-12 02:31:17,675 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1322892308]
[2023-11-12 02:31:17,675 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1322892308] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-12 02:31:17,676 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-12 02:31:17,676 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-12 02:31:17,676 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324367635]
[2023-11-12 02:31:17,676 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-12 02:31:17,676 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2023-11-12 02:31:17,677 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-11-12 02:31:17,677 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2023-11-12 02:31:17,677 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72
[2023-11-12 02:31:17,678 INFO  L87              Difference]: Start difference. First operand 91 states and 97 transitions. Second operand  has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-11-12 02:31:18,171 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-12 02:31:18,172 INFO  L93              Difference]: Finished difference Result 90 states and 96 transitions.
[2023-11-12 02:31:18,174 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-12 02:31:18,174 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26
[2023-11-12 02:31:18,174 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-12 02:31:18,175 INFO  L225             Difference]: With dead ends: 90
[2023-11-12 02:31:18,175 INFO  L226             Difference]: Without dead ends: 90
[2023-11-12 02:31:18,175 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156
[2023-11-12 02:31:18,176 INFO  L413           NwaCegarLoop]: 74 mSDtfsCounter, 23 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2023-11-12 02:31:18,176 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 470 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2023-11-12 02:31:18,177 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 90 states.
[2023-11-12 02:31:18,179 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90.
[2023-11-12 02:31:18,179 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 90 states, 65 states have (on average 1.4153846153846155) internal successors, (92), 86 states have internal predecessors, (92), 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)
[2023-11-12 02:31:18,180 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 96 transitions.
[2023-11-12 02:31:18,180 INFO  L78                 Accepts]: Start accepts. Automaton has 90 states and 96 transitions. Word has length 26
[2023-11-12 02:31:18,180 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-12 02:31:18,180 INFO  L495      AbstractCegarLoop]: Abstraction has 90 states and 96 transitions.
[2023-11-12 02:31:18,180 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-11-12 02:31:18,181 INFO  L276                IsEmpty]: Start isEmpty. Operand 90 states and 96 transitions.
[2023-11-12 02:31:18,181 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2023-11-12 02:31:18,181 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-12 02:31:18,181 INFO  L195           NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-12 02:31:18,200 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0
[2023-11-12 02:31:18,393 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:18,393 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2023-11-12 02:31:18,393 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-12 02:31:18,393 INFO  L85        PathProgramCache]: Analyzing trace with hash 906365991, now seen corresponding path program 1 times
[2023-11-12 02:31:18,394 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-12 02:31:18,394 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1150523644]
[2023-11-12 02:31:18,394 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:31:18,394 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:18,394 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat
[2023-11-12 02:31:18,395 INFO  L229       MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-12 02:31:18,400 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process
[2023-11-12 02:31:18,534 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-12 02:31:18,541 INFO  L262         TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 13 conjunts are in the unsatisfiable core
[2023-11-12 02:31:18,544 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-12 02:31:18,816 INFO  L134       CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-12 02:31:18,816 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-12 02:31:19,486 INFO  L134       CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-12 02:31:19,486 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-11-12 02:31:19,486 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1150523644]
[2023-11-12 02:31:19,486 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1150523644] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-12 02:31:19,487 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-11-12 02:31:19,487 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26
[2023-11-12 02:31:19,487 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550344408]
[2023-11-12 02:31:19,487 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-11-12 02:31:19,487 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 26 states
[2023-11-12 02:31:19,487 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-11-12 02:31:19,488 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2023-11-12 02:31:19,489 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650
[2023-11-12 02:31:19,489 INFO  L87              Difference]: Start difference. First operand 90 states and 96 transitions. Second operand  has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 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)
[2023-11-12 02:31:20,154 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-12 02:31:20,154 INFO  L93              Difference]: Finished difference Result 96 states and 102 transitions.
[2023-11-12 02:31:20,155 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. 
[2023-11-12 02:31:20,156 INFO  L78                 Accepts]: Start accepts. Automaton has  has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 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 28
[2023-11-12 02:31:20,156 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-12 02:31:20,157 INFO  L225             Difference]: With dead ends: 96
[2023-11-12 02:31:20,157 INFO  L226             Difference]: Without dead ends: 96
[2023-11-12 02:31:20,158 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=278, Invalid=652, Unknown=0, NotChecked=0, Total=930
[2023-11-12 02:31:20,158 INFO  L413           NwaCegarLoop]: 83 mSDtfsCounter, 8 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2023-11-12 02:31:20,159 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1138 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2023-11-12 02:31:20,159 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 96 states.
[2023-11-12 02:31:20,162 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96.
[2023-11-12 02:31:20,162 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 96 states, 71 states have (on average 1.380281690140845) internal successors, (98), 92 states have internal predecessors, (98), 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)
[2023-11-12 02:31:20,163 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 102 transitions.
[2023-11-12 02:31:20,163 INFO  L78                 Accepts]: Start accepts. Automaton has 96 states and 102 transitions. Word has length 28
[2023-11-12 02:31:20,163 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-12 02:31:20,163 INFO  L495      AbstractCegarLoop]: Abstraction has 96 states and 102 transitions.
[2023-11-12 02:31:20,164 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 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)
[2023-11-12 02:31:20,164 INFO  L276                IsEmpty]: Start isEmpty. Operand 96 states and 102 transitions.
[2023-11-12 02:31:20,165 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2023-11-12 02:31:20,165 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-12 02:31:20,165 INFO  L195           NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-12 02:31:20,182 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0
[2023-11-12 02:31:20,377 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:20,377 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2023-11-12 02:31:20,378 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-12 02:31:20,378 INFO  L85        PathProgramCache]: Analyzing trace with hash 929089095, now seen corresponding path program 2 times
[2023-11-12 02:31:20,378 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-12 02:31:20,379 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1692071150]
[2023-11-12 02:31:20,379 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2023-11-12 02:31:20,379 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:20,379 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat
[2023-11-12 02:31:20,380 INFO  L229       MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-12 02:31:20,384 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process
[2023-11-12 02:31:20,504 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s)
[2023-11-12 02:31:20,504 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2023-11-12 02:31:20,507 INFO  L262         TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-12 02:31:20,509 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-12 02:31:20,573 INFO  L134       CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked.
[2023-11-12 02:31:20,574 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-12 02:31:20,574 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-11-12 02:31:20,574 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1692071150]
[2023-11-12 02:31:20,574 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1692071150] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-12 02:31:20,574 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-12 02:31:20,574 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-12 02:31:20,574 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215887739]
[2023-11-12 02:31:20,574 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-12 02:31:20,575 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-12 02:31:20,575 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-11-12 02:31:20,575 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-12 02:31:20,575 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2023-11-12 02:31:20,576 INFO  L87              Difference]: Start difference. First operand 96 states and 102 transitions. Second operand  has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 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)
[2023-11-12 02:31:20,620 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-12 02:31:20,620 INFO  L93              Difference]: Finished difference Result 96 states and 101 transitions.
[2023-11-12 02:31:20,621 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-12 02:31:20,621 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 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 34
[2023-11-12 02:31:20,621 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-12 02:31:20,622 INFO  L225             Difference]: With dead ends: 96
[2023-11-12 02:31:20,622 INFO  L226             Difference]: Without dead ends: 96
[2023-11-12 02:31:20,622 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2023-11-12 02:31:20,623 INFO  L413           NwaCegarLoop]: 80 mSDtfsCounter, 14 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-12 02:31:20,623 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 377 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-12 02:31:20,624 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 96 states.
[2023-11-12 02:31:20,626 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96.
[2023-11-12 02:31:20,626 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 96 states, 71 states have (on average 1.3661971830985915) internal successors, (97), 92 states have internal predecessors, (97), 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)
[2023-11-12 02:31:20,627 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 101 transitions.
[2023-11-12 02:31:20,627 INFO  L78                 Accepts]: Start accepts. Automaton has 96 states and 101 transitions. Word has length 34
[2023-11-12 02:31:20,628 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-12 02:31:20,628 INFO  L495      AbstractCegarLoop]: Abstraction has 96 states and 101 transitions.
[2023-11-12 02:31:20,628 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 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)
[2023-11-12 02:31:20,628 INFO  L276                IsEmpty]: Start isEmpty. Operand 96 states and 101 transitions.
[2023-11-12 02:31:20,629 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2023-11-12 02:31:20,629 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-12 02:31:20,629 INFO  L195           NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-12 02:31:20,648 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0
[2023-11-12 02:31:20,841 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:20,841 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2023-11-12 02:31:20,841 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-12 02:31:20,841 INFO  L85        PathProgramCache]: Analyzing trace with hash 950186315, now seen corresponding path program 1 times
[2023-11-12 02:31:20,842 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-12 02:31:20,842 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [504259732]
[2023-11-12 02:31:20,842 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:31:20,842 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:20,842 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat
[2023-11-12 02:31:20,848 INFO  L229       MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-12 02:31:20,856 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process
[2023-11-12 02:31:21,042 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-12 02:31:21,050 INFO  L262         TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-12 02:31:21,053 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-12 02:31:21,066 INFO  L351             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
[2023-11-12 02:31:21,208 INFO  L134       CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked.
[2023-11-12 02:31:21,208 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-12 02:31:21,208 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-11-12 02:31:21,209 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [504259732]
[2023-11-12 02:31:21,209 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [504259732] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-12 02:31:21,209 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-12 02:31:21,209 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-12 02:31:21,210 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511796082]
[2023-11-12 02:31:21,210 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-12 02:31:21,211 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2023-11-12 02:31:21,213 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-11-12 02:31:21,213 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2023-11-12 02:31:21,214 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72
[2023-11-12 02:31:21,214 INFO  L87              Difference]: Start difference. First operand 96 states and 101 transitions. Second operand  has 9 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-11-12 02:31:21,663 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-12 02:31:21,663 INFO  L93              Difference]: Finished difference Result 94 states and 99 transitions.
[2023-11-12 02:31:21,664 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-12 02:31:21,664 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36
[2023-11-12 02:31:21,664 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-12 02:31:21,665 INFO  L225             Difference]: With dead ends: 94
[2023-11-12 02:31:21,665 INFO  L226             Difference]: Without dead ends: 94
[2023-11-12 02:31:21,665 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132
[2023-11-12 02:31:21,666 INFO  L413           NwaCegarLoop]: 67 mSDtfsCounter, 26 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2023-11-12 02:31:21,666 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 383 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2023-11-12 02:31:21,667 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 94 states.
[2023-11-12 02:31:21,669 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94.
[2023-11-12 02:31:21,669 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 94 states, 71 states have (on average 1.3380281690140845) internal successors, (95), 90 states have internal predecessors, (95), 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)
[2023-11-12 02:31:21,670 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 99 transitions.
[2023-11-12 02:31:21,670 INFO  L78                 Accepts]: Start accepts. Automaton has 94 states and 99 transitions. Word has length 36
[2023-11-12 02:31:21,671 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-12 02:31:21,671 INFO  L495      AbstractCegarLoop]: Abstraction has 94 states and 99 transitions.
[2023-11-12 02:31:21,671 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-11-12 02:31:21,671 INFO  L276                IsEmpty]: Start isEmpty. Operand 94 states and 99 transitions.
[2023-11-12 02:31:21,672 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2023-11-12 02:31:21,672 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-12 02:31:21,673 INFO  L195           NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-12 02:31:21,686 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0
[2023-11-12 02:31:21,885 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:21,886 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2023-11-12 02:31:21,886 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-12 02:31:21,886 INFO  L85        PathProgramCache]: Analyzing trace with hash 950186316, now seen corresponding path program 1 times
[2023-11-12 02:31:21,887 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-12 02:31:21,887 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [99168633]
[2023-11-12 02:31:21,887 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:31:21,887 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:21,887 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat
[2023-11-12 02:31:21,888 INFO  L229       MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-12 02:31:21,889 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process
[2023-11-12 02:31:22,087 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-12 02:31:22,096 INFO  L262         TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 23 conjunts are in the unsatisfiable core
[2023-11-12 02:31:22,098 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-12 02:31:22,114 INFO  L351             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
[2023-11-12 02:31:22,425 INFO  L134       CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked.
[2023-11-12 02:31:22,425 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-12 02:31:22,425 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-11-12 02:31:22,425 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [99168633]
[2023-11-12 02:31:22,426 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [99168633] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-12 02:31:22,426 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-12 02:31:22,426 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2023-11-12 02:31:22,426 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494066483]
[2023-11-12 02:31:22,426 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-12 02:31:22,426 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2023-11-12 02:31:22,426 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-11-12 02:31:22,427 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2023-11-12 02:31:22,427 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90
[2023-11-12 02:31:22,427 INFO  L87              Difference]: Start difference. First operand 94 states and 99 transitions. Second operand  has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-11-12 02:31:22,948 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-12 02:31:22,948 INFO  L93              Difference]: Finished difference Result 92 states and 97 transitions.
[2023-11-12 02:31:22,949 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-12 02:31:22,949 INFO  L78                 Accepts]: Start accepts. Automaton has  has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36
[2023-11-12 02:31:22,949 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-12 02:31:22,950 INFO  L225             Difference]: With dead ends: 92
[2023-11-12 02:31:22,950 INFO  L226             Difference]: Without dead ends: 92
[2023-11-12 02:31:22,950 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182
[2023-11-12 02:31:22,951 INFO  L413           NwaCegarLoop]: 66 mSDtfsCounter, 24 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2023-11-12 02:31:22,951 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 489 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2023-11-12 02:31:22,952 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 92 states.
[2023-11-12 02:31:22,954 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92.
[2023-11-12 02:31:22,955 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 92 states, 71 states have (on average 1.3098591549295775) internal successors, (93), 88 states have internal predecessors, (93), 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)
[2023-11-12 02:31:22,955 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 97 transitions.
[2023-11-12 02:31:22,956 INFO  L78                 Accepts]: Start accepts. Automaton has 92 states and 97 transitions. Word has length 36
[2023-11-12 02:31:22,956 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-12 02:31:22,956 INFO  L495      AbstractCegarLoop]: Abstraction has 92 states and 97 transitions.
[2023-11-12 02:31:22,956 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-11-12 02:31:22,957 INFO  L276                IsEmpty]: Start isEmpty. Operand 92 states and 97 transitions.
[2023-11-12 02:31:22,957 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2023-11-12 02:31:22,957 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-12 02:31:22,957 INFO  L195           NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-12 02:31:22,971 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0
[2023-11-12 02:31:23,170 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:23,171 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2023-11-12 02:31:23,171 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-12 02:31:23,171 INFO  L85        PathProgramCache]: Analyzing trace with hash 899481459, now seen corresponding path program 1 times
[2023-11-12 02:31:23,172 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-12 02:31:23,172 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [654737074]
[2023-11-12 02:31:23,172 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:31:23,172 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:23,172 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat
[2023-11-12 02:31:23,173 INFO  L229       MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-12 02:31:23,174 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process
[2023-11-12 02:31:23,372 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-12 02:31:23,382 INFO  L262         TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-11-12 02:31:23,384 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-12 02:31:23,480 INFO  L134       CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked.
[2023-11-12 02:31:23,480 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-12 02:31:23,481 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-11-12 02:31:23,481 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [654737074]
[2023-11-12 02:31:23,481 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [654737074] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-12 02:31:23,481 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-12 02:31:23,481 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-12 02:31:23,481 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134033049]
[2023-11-12 02:31:23,482 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-12 02:31:23,482 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-12 02:31:23,482 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-11-12 02:31:23,483 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-12 02:31:23,483 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-12 02:31:23,483 INFO  L87              Difference]: Start difference. First operand 92 states and 97 transitions. Second operand  has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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)
[2023-11-12 02:31:23,554 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-12 02:31:23,555 INFO  L93              Difference]: Finished difference Result 92 states and 96 transitions.
[2023-11-12 02:31:23,555 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-12 02:31:23,555 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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 36
[2023-11-12 02:31:23,556 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-12 02:31:23,556 INFO  L225             Difference]: With dead ends: 92
[2023-11-12 02:31:23,556 INFO  L226             Difference]: Without dead ends: 92
[2023-11-12 02:31:23,557 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72
[2023-11-12 02:31:23,557 INFO  L413           NwaCegarLoop]: 74 mSDtfsCounter, 15 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-12 02:31:23,558 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 421 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-12 02:31:23,559 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 92 states.
[2023-11-12 02:31:23,560 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92.
[2023-11-12 02:31:23,561 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 92 states, 71 states have (on average 1.295774647887324) internal successors, (92), 87 states have internal predecessors, (92), 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)
[2023-11-12 02:31:23,562 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 96 transitions.
[2023-11-12 02:31:23,562 INFO  L78                 Accepts]: Start accepts. Automaton has 92 states and 96 transitions. Word has length 36
[2023-11-12 02:31:23,563 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-12 02:31:23,563 INFO  L495      AbstractCegarLoop]: Abstraction has 92 states and 96 transitions.
[2023-11-12 02:31:23,564 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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)
[2023-11-12 02:31:23,564 INFO  L276                IsEmpty]: Start isEmpty. Operand 92 states and 96 transitions.
[2023-11-12 02:31:23,566 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2023-11-12 02:31:23,566 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-12 02:31:23,567 INFO  L195           NwaCegarLoop]: trace histogram [16, 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]
[2023-11-12 02:31:23,582 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0
[2023-11-12 02:31:23,768 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:23,768 INFO  L420      AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2023-11-12 02:31:23,768 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-12 02:31:23,769 INFO  L85        PathProgramCache]: Analyzing trace with hash -471515152, now seen corresponding path program 1 times
[2023-11-12 02:31:23,769 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-12 02:31:23,769 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1012568771]
[2023-11-12 02:31:23,769 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:31:23,769 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:23,769 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat
[2023-11-12 02:31:23,771 INFO  L229       MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-12 02:31:23,776 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process
[2023-11-12 02:31:24,027 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-12 02:31:24,040 INFO  L262         TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 14 conjunts are in the unsatisfiable core
[2023-11-12 02:31:24,043 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-12 02:31:24,048 INFO  L351             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
[2023-11-12 02:31:24,230 INFO  L134       CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked.
[2023-11-12 02:31:24,230 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-12 02:31:24,230 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-11-12 02:31:24,230 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1012568771]
[2023-11-12 02:31:24,230 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1012568771] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-12 02:31:24,231 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-12 02:31:24,231 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-12 02:31:24,231 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31053093]
[2023-11-12 02:31:24,231 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-12 02:31:24,231 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2023-11-12 02:31:24,232 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-11-12 02:31:24,232 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2023-11-12 02:31:24,232 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72
[2023-11-12 02:31:24,233 INFO  L87              Difference]: Start difference. First operand 92 states and 96 transitions. Second operand  has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 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)
[2023-11-12 02:31:24,684 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-12 02:31:24,684 INFO  L93              Difference]: Finished difference Result 96 states and 99 transitions.
[2023-11-12 02:31:24,685 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-11-12 02:31:24,685 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 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 44
[2023-11-12 02:31:24,685 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-12 02:31:24,686 INFO  L225             Difference]: With dead ends: 96
[2023-11-12 02:31:24,686 INFO  L226             Difference]: Without dead ends: 96
[2023-11-12 02:31:24,686 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132
[2023-11-12 02:31:24,687 INFO  L413           NwaCegarLoop]: 49 mSDtfsCounter, 93 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2023-11-12 02:31:24,687 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 254 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2023-11-12 02:31:24,688 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 96 states.
[2023-11-12 02:31:24,689 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 90.
[2023-11-12 02:31:24,690 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 90 states, 71 states have (on average 1.267605633802817) internal successors, (90), 85 states have internal predecessors, (90), 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)
[2023-11-12 02:31:24,690 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 94 transitions.
[2023-11-12 02:31:24,691 INFO  L78                 Accepts]: Start accepts. Automaton has 90 states and 94 transitions. Word has length 44
[2023-11-12 02:31:24,691 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-12 02:31:24,691 INFO  L495      AbstractCegarLoop]: Abstraction has 90 states and 94 transitions.
[2023-11-12 02:31:24,691 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 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)
[2023-11-12 02:31:24,691 INFO  L276                IsEmpty]: Start isEmpty. Operand 90 states and 94 transitions.
[2023-11-12 02:31:24,692 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2023-11-12 02:31:24,692 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-12 02:31:24,692 INFO  L195           NwaCegarLoop]: trace histogram [16, 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]
[2023-11-12 02:31:24,708 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0
[2023-11-12 02:31:24,893 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:24,893 INFO  L420      AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2023-11-12 02:31:24,893 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-12 02:31:24,893 INFO  L85        PathProgramCache]: Analyzing trace with hash -471515151, now seen corresponding path program 1 times
[2023-11-12 02:31:24,894 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-12 02:31:24,894 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [909604989]
[2023-11-12 02:31:24,894 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:31:24,894 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:24,894 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat
[2023-11-12 02:31:24,895 INFO  L229       MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-12 02:31:24,905 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process
[2023-11-12 02:31:25,159 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-12 02:31:25,171 INFO  L262         TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 27 conjunts are in the unsatisfiable core
[2023-11-12 02:31:25,173 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-12 02:31:25,186 INFO  L351             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
[2023-11-12 02:31:25,544 INFO  L134       CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked.
[2023-11-12 02:31:25,545 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-12 02:31:25,545 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-11-12 02:31:25,545 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [909604989]
[2023-11-12 02:31:25,545 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [909604989] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-12 02:31:25,545 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-12 02:31:25,545 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2023-11-12 02:31:25,545 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190492448]
[2023-11-12 02:31:25,545 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-12 02:31:25,546 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2023-11-12 02:31:25,546 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-11-12 02:31:25,546 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2023-11-12 02:31:25,547 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90
[2023-11-12 02:31:25,547 INFO  L87              Difference]: Start difference. First operand 90 states and 94 transitions. Second operand  has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 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)
[2023-11-12 02:31:26,056 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-12 02:31:26,057 INFO  L93              Difference]: Finished difference Result 88 states and 92 transitions.
[2023-11-12 02:31:26,064 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2023-11-12 02:31:26,065 INFO  L78                 Accepts]: Start accepts. Automaton has  has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 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 44
[2023-11-12 02:31:26,065 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-12 02:31:26,067 INFO  L225             Difference]: With dead ends: 88
[2023-11-12 02:31:26,067 INFO  L226             Difference]: Without dead ends: 88
[2023-11-12 02:31:26,068 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182
[2023-11-12 02:31:26,069 INFO  L413           NwaCegarLoop]: 53 mSDtfsCounter, 106 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2023-11-12 02:31:26,069 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 344 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2023-11-12 02:31:26,071 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 88 states.
[2023-11-12 02:31:26,074 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88.
[2023-11-12 02:31:26,075 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 88 states, 71 states have (on average 1.2394366197183098) internal successors, (88), 83 states have internal predecessors, (88), 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)
[2023-11-12 02:31:26,076 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 92 transitions.
[2023-11-12 02:31:26,076 INFO  L78                 Accepts]: Start accepts. Automaton has 88 states and 92 transitions. Word has length 44
[2023-11-12 02:31:26,076 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-12 02:31:26,076 INFO  L495      AbstractCegarLoop]: Abstraction has 88 states and 92 transitions.
[2023-11-12 02:31:26,077 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 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)
[2023-11-12 02:31:26,077 INFO  L276                IsEmpty]: Start isEmpty. Operand 88 states and 92 transitions.
[2023-11-12 02:31:26,078 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 48
[2023-11-12 02:31:26,078 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-12 02:31:26,078 INFO  L195           NwaCegarLoop]: trace histogram [16, 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]
[2023-11-12 02:31:26,092 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0
[2023-11-12 02:31:26,288 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:26,289 INFO  L420      AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2023-11-12 02:31:26,289 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-12 02:31:26,289 INFO  L85        PathProgramCache]: Analyzing trace with hash 1943548953, now seen corresponding path program 1 times
[2023-11-12 02:31:26,289 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-12 02:31:26,289 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1437615332]
[2023-11-12 02:31:26,290 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:31:26,290 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:26,290 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat
[2023-11-12 02:31:26,291 INFO  L229       MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-12 02:31:26,294 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process
[2023-11-12 02:31:26,542 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-12 02:31:26,553 INFO  L262         TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-11-12 02:31:26,555 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-12 02:31:26,656 INFO  L134       CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked.
[2023-11-12 02:31:26,656 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-12 02:31:26,657 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-11-12 02:31:26,657 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1437615332]
[2023-11-12 02:31:26,657 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1437615332] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-12 02:31:26,657 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-12 02:31:26,657 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-12 02:31:26,657 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150068272]
[2023-11-12 02:31:26,658 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-12 02:31:26,658 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-12 02:31:26,658 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-11-12 02:31:26,659 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-12 02:31:26,659 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-11-12 02:31:26,659 INFO  L87              Difference]: Start difference. First operand 88 states and 92 transitions. Second operand  has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 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)
[2023-11-12 02:31:26,724 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-12 02:31:26,725 INFO  L93              Difference]: Finished difference Result 88 states and 91 transitions.
[2023-11-12 02:31:26,725 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-11-12 02:31:26,725 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 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 47
[2023-11-12 02:31:26,726 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-12 02:31:26,726 INFO  L225             Difference]: With dead ends: 88
[2023-11-12 02:31:26,726 INFO  L226             Difference]: Without dead ends: 88
[2023-11-12 02:31:26,727 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72
[2023-11-12 02:31:26,727 INFO  L413           NwaCegarLoop]: 68 mSDtfsCounter, 58 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-12 02:31:26,728 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 339 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-12 02:31:26,728 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 88 states.
[2023-11-12 02:31:26,730 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88.
[2023-11-12 02:31:26,731 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 88 states, 71 states have (on average 1.2253521126760563) internal successors, (87), 83 states have internal predecessors, (87), 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)
[2023-11-12 02:31:26,731 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 91 transitions.
[2023-11-12 02:31:26,731 INFO  L78                 Accepts]: Start accepts. Automaton has 88 states and 91 transitions. Word has length 47
[2023-11-12 02:31:26,732 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-12 02:31:26,732 INFO  L495      AbstractCegarLoop]: Abstraction has 88 states and 91 transitions.
[2023-11-12 02:31:26,732 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 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)
[2023-11-12 02:31:26,732 INFO  L276                IsEmpty]: Start isEmpty. Operand 88 states and 91 transitions.
[2023-11-12 02:31:26,733 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 54
[2023-11-12 02:31:26,733 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-12 02:31:26,733 INFO  L195           NwaCegarLoop]: trace histogram [16, 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]
[2023-11-12 02:31:26,748 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0
[2023-11-12 02:31:26,945 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:26,946 INFO  L420      AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2023-11-12 02:31:26,946 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-12 02:31:26,946 INFO  L85        PathProgramCache]: Analyzing trace with hash 1735718259, now seen corresponding path program 1 times
[2023-11-12 02:31:26,946 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-12 02:31:26,947 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [528704814]
[2023-11-12 02:31:26,947 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:31:26,947 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:26,947 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat
[2023-11-12 02:31:26,948 INFO  L229       MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-12 02:31:26,951 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process
[2023-11-12 02:31:27,281 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-12 02:31:27,293 INFO  L262         TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 16 conjunts are in the unsatisfiable core
[2023-11-12 02:31:27,305 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-12 02:31:27,316 INFO  L351             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
[2023-11-12 02:31:27,538 INFO  L134       CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked.
[2023-11-12 02:31:27,538 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-12 02:31:27,538 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-11-12 02:31:27,538 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [528704814]
[2023-11-12 02:31:27,538 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [528704814] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-12 02:31:27,539 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-12 02:31:27,539 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2023-11-12 02:31:27,539 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676793202]
[2023-11-12 02:31:27,539 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-12 02:31:27,539 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2023-11-12 02:31:27,540 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-11-12 02:31:27,540 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2023-11-12 02:31:27,540 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90
[2023-11-12 02:31:27,541 INFO  L87              Difference]: Start difference. First operand 88 states and 91 transitions. Second operand  has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 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)
[2023-11-12 02:31:27,994 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-12 02:31:27,994 INFO  L93              Difference]: Finished difference Result 92 states and 94 transitions.
[2023-11-12 02:31:27,994 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2023-11-12 02:31:27,995 INFO  L78                 Accepts]: Start accepts. Automaton has  has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 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 53
[2023-11-12 02:31:27,995 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-12 02:31:27,996 INFO  L225             Difference]: With dead ends: 92
[2023-11-12 02:31:27,996 INFO  L226             Difference]: Without dead ends: 92
[2023-11-12 02:31:27,996 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182
[2023-11-12 02:31:27,997 INFO  L413           NwaCegarLoop]: 46 mSDtfsCounter, 91 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2023-11-12 02:31:27,997 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 282 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2023-11-12 02:31:27,998 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 92 states.
[2023-11-12 02:31:28,000 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 86.
[2023-11-12 02:31:28,000 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 86 states, 71 states have (on average 1.1971830985915493) internal successors, (85), 81 states have internal predecessors, (85), 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)
[2023-11-12 02:31:28,001 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 89 transitions.
[2023-11-12 02:31:28,001 INFO  L78                 Accepts]: Start accepts. Automaton has 86 states and 89 transitions. Word has length 53
[2023-11-12 02:31:28,002 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-12 02:31:28,002 INFO  L495      AbstractCegarLoop]: Abstraction has 86 states and 89 transitions.
[2023-11-12 02:31:28,002 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 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)
[2023-11-12 02:31:28,002 INFO  L276                IsEmpty]: Start isEmpty. Operand 86 states and 89 transitions.
[2023-11-12 02:31:28,003 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 54
[2023-11-12 02:31:28,003 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-12 02:31:28,003 INFO  L195           NwaCegarLoop]: trace histogram [16, 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]
[2023-11-12 02:31:28,015 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0
[2023-11-12 02:31:28,208 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:28,209 INFO  L420      AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2023-11-12 02:31:28,209 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-12 02:31:28,209 INFO  L85        PathProgramCache]: Analyzing trace with hash 1735718260, now seen corresponding path program 1 times
[2023-11-12 02:31:28,210 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-12 02:31:28,210 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [829513176]
[2023-11-12 02:31:28,210 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:31:28,210 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:28,210 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat
[2023-11-12 02:31:28,211 INFO  L229       MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-12 02:31:28,213 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process
[2023-11-12 02:31:28,539 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-12 02:31:28,551 INFO  L262         TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 31 conjunts are in the unsatisfiable core
[2023-11-12 02:31:28,554 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-12 02:31:28,575 INFO  L351             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
[2023-11-12 02:31:28,990 INFO  L134       CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked.
[2023-11-12 02:31:28,991 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-12 02:31:28,991 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-11-12 02:31:28,991 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [829513176]
[2023-11-12 02:31:28,991 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [829513176] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-12 02:31:28,991 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-12 02:31:28,991 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2023-11-12 02:31:28,991 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598019369]
[2023-11-12 02:31:28,992 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-12 02:31:28,992 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2023-11-12 02:31:28,992 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-11-12 02:31:28,993 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2023-11-12 02:31:28,993 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110
[2023-11-12 02:31:28,993 INFO  L87              Difference]: Start difference. First operand 86 states and 89 transitions. Second operand  has 11 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 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)
[2023-11-12 02:31:29,565 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-12 02:31:29,565 INFO  L93              Difference]: Finished difference Result 84 states and 87 transitions.
[2023-11-12 02:31:29,566 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2023-11-12 02:31:29,566 INFO  L78                 Accepts]: Start accepts. Automaton has  has 11 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 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 53
[2023-11-12 02:31:29,567 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-12 02:31:29,567 INFO  L225             Difference]: With dead ends: 84
[2023-11-12 02:31:29,567 INFO  L226             Difference]: Without dead ends: 84
[2023-11-12 02:31:29,568 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240
[2023-11-12 02:31:29,569 INFO  L413           NwaCegarLoop]: 50 mSDtfsCounter, 152 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2023-11-12 02:31:29,569 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 304 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2023-11-12 02:31:29,570 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 84 states.
[2023-11-12 02:31:29,571 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84.
[2023-11-12 02:31:29,572 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 84 states, 71 states have (on average 1.1690140845070423) internal successors, (83), 79 states have internal predecessors, (83), 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)
[2023-11-12 02:31:29,572 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 87 transitions.
[2023-11-12 02:31:29,573 INFO  L78                 Accepts]: Start accepts. Automaton has 84 states and 87 transitions. Word has length 53
[2023-11-12 02:31:29,573 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-12 02:31:29,573 INFO  L495      AbstractCegarLoop]: Abstraction has 84 states and 87 transitions.
[2023-11-12 02:31:29,573 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 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)
[2023-11-12 02:31:29,573 INFO  L276                IsEmpty]: Start isEmpty. Operand 84 states and 87 transitions.
[2023-11-12 02:31:29,574 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 56
[2023-11-12 02:31:29,574 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-12 02:31:29,574 INFO  L195           NwaCegarLoop]: trace histogram [16, 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]
[2023-11-12 02:31:29,587 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0
[2023-11-12 02:31:29,784 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:29,784 INFO  L420      AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2023-11-12 02:31:29,785 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-12 02:31:29,785 INFO  L85        PathProgramCache]: Analyzing trace with hash 1579416181, now seen corresponding path program 1 times
[2023-11-12 02:31:29,785 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-12 02:31:29,785 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [362853470]
[2023-11-12 02:31:29,785 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:31:29,786 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:29,786 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat
[2023-11-12 02:31:29,786 INFO  L229       MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-12 02:31:29,788 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process
[2023-11-12 02:31:30,054 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-12 02:31:30,066 INFO  L262         TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-11-12 02:31:30,068 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-12 02:31:30,179 INFO  L134       CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked.
[2023-11-12 02:31:30,179 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-12 02:31:30,179 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-11-12 02:31:30,180 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [362853470]
[2023-11-12 02:31:30,180 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [362853470] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-12 02:31:30,180 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-12 02:31:30,180 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-11-12 02:31:30,180 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107424820]
[2023-11-12 02:31:30,181 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-12 02:31:30,181 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-12 02:31:30,181 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-11-12 02:31:30,182 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-12 02:31:30,182 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2023-11-12 02:31:30,182 INFO  L87              Difference]: Start difference. First operand 84 states and 87 transitions. Second operand  has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 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)
[2023-11-12 02:31:30,263 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-12 02:31:30,263 INFO  L93              Difference]: Finished difference Result 84 states and 86 transitions.
[2023-11-12 02:31:30,263 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-12 02:31:30,264 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 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 55
[2023-11-12 02:31:30,264 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-12 02:31:30,264 INFO  L225             Difference]: With dead ends: 84
[2023-11-12 02:31:30,265 INFO  L226             Difference]: Without dead ends: 84
[2023-11-12 02:31:30,265 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110
[2023-11-12 02:31:30,266 INFO  L413           NwaCegarLoop]: 63 mSDtfsCounter, 109 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-12 02:31:30,266 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 312 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-12 02:31:30,266 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 84 states.
[2023-11-12 02:31:30,268 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84.
[2023-11-12 02:31:30,269 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 84 states, 71 states have (on average 1.1549295774647887) internal successors, (82), 79 states have internal predecessors, (82), 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)
[2023-11-12 02:31:30,269 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 86 transitions.
[2023-11-12 02:31:30,269 INFO  L78                 Accepts]: Start accepts. Automaton has 84 states and 86 transitions. Word has length 55
[2023-11-12 02:31:30,270 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-12 02:31:30,270 INFO  L495      AbstractCegarLoop]: Abstraction has 84 states and 86 transitions.
[2023-11-12 02:31:30,270 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 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)
[2023-11-12 02:31:30,270 INFO  L276                IsEmpty]: Start isEmpty. Operand 84 states and 86 transitions.
[2023-11-12 02:31:30,270 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 60
[2023-11-12 02:31:30,270 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-12 02:31:30,271 INFO  L195           NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-12 02:31:30,292 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0
[2023-11-12 02:31:30,471 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:30,471 INFO  L420      AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2023-11-12 02:31:30,471 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-12 02:31:30,472 INFO  L85        PathProgramCache]: Analyzing trace with hash 1867081175, now seen corresponding path program 1 times
[2023-11-12 02:31:30,472 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-12 02:31:30,472 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1427786124]
[2023-11-12 02:31:30,472 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:31:30,472 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:30,472 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat
[2023-11-12 02:31:30,473 INFO  L229       MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-12 02:31:30,474 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process
[2023-11-12 02:31:30,833 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-12 02:31:30,849 INFO  L262         TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-12 02:31:30,852 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-12 02:31:30,855 INFO  L351             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
[2023-11-12 02:31:31,073 INFO  L134       CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked.
[2023-11-12 02:31:31,074 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-12 02:31:31,074 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-11-12 02:31:31,074 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1427786124]
[2023-11-12 02:31:31,074 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1427786124] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-12 02:31:31,074 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-12 02:31:31,074 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2023-11-12 02:31:31,074 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620106183]
[2023-11-12 02:31:31,074 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-12 02:31:31,075 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2023-11-12 02:31:31,075 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-11-12 02:31:31,075 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2023-11-12 02:31:31,076 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110
[2023-11-12 02:31:31,076 INFO  L87              Difference]: Start difference. First operand 84 states and 86 transitions. Second operand  has 11 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 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)
[2023-11-12 02:31:31,575 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-12 02:31:31,575 INFO  L93              Difference]: Finished difference Result 88 states and 89 transitions.
[2023-11-12 02:31:31,576 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2023-11-12 02:31:31,576 INFO  L78                 Accepts]: Start accepts. Automaton has  has 11 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 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 59
[2023-11-12 02:31:31,576 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-12 02:31:31,577 INFO  L225             Difference]: With dead ends: 88
[2023-11-12 02:31:31,577 INFO  L226             Difference]: Without dead ends: 88
[2023-11-12 02:31:31,577 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240
[2023-11-12 02:31:31,578 INFO  L413           NwaCegarLoop]: 42 mSDtfsCounter, 86 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2023-11-12 02:31:31,578 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 259 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2023-11-12 02:31:31,579 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 88 states.
[2023-11-12 02:31:31,581 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 82.
[2023-11-12 02:31:31,581 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 82 states, 71 states have (on average 1.1267605633802817) internal successors, (80), 77 states have internal predecessors, (80), 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)
[2023-11-12 02:31:31,582 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 84 transitions.
[2023-11-12 02:31:31,582 INFO  L78                 Accepts]: Start accepts. Automaton has 82 states and 84 transitions. Word has length 59
[2023-11-12 02:31:31,582 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-12 02:31:31,582 INFO  L495      AbstractCegarLoop]: Abstraction has 82 states and 84 transitions.
[2023-11-12 02:31:31,583 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 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)
[2023-11-12 02:31:31,583 INFO  L276                IsEmpty]: Start isEmpty. Operand 82 states and 84 transitions.
[2023-11-12 02:31:31,583 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 60
[2023-11-12 02:31:31,583 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-12 02:31:31,584 INFO  L195           NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-12 02:31:31,602 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0
[2023-11-12 02:31:31,798 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:31,798 INFO  L420      AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2023-11-12 02:31:31,798 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-12 02:31:31,798 INFO  L85        PathProgramCache]: Analyzing trace with hash 1867081176, now seen corresponding path program 1 times
[2023-11-12 02:31:31,798 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-12 02:31:31,799 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1952869210]
[2023-11-12 02:31:31,799 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:31:31,799 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:31,799 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat
[2023-11-12 02:31:31,800 INFO  L229       MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-12 02:31:31,801 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process
[2023-11-12 02:31:32,181 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-12 02:31:32,197 INFO  L262         TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 41 conjunts are in the unsatisfiable core
[2023-11-12 02:31:32,200 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-12 02:31:32,212 INFO  L351             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
[2023-11-12 02:31:32,667 INFO  L134       CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked.
[2023-11-12 02:31:32,668 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-12 02:31:32,668 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-11-12 02:31:32,668 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1952869210]
[2023-11-12 02:31:32,668 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1952869210] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-12 02:31:32,668 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-12 02:31:32,668 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2023-11-12 02:31:32,668 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939375837]
[2023-11-12 02:31:32,668 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-12 02:31:32,669 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2023-11-12 02:31:32,669 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-11-12 02:31:32,669 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2023-11-12 02:31:32,669 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132
[2023-11-12 02:31:32,670 INFO  L87              Difference]: Start difference. First operand 82 states and 84 transitions. Second operand  has 12 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 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)
[2023-11-12 02:31:33,370 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-12 02:31:33,370 INFO  L93              Difference]: Finished difference Result 80 states and 82 transitions.
[2023-11-12 02:31:33,371 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2023-11-12 02:31:33,371 INFO  L78                 Accepts]: Start accepts. Automaton has  has 12 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 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 59
[2023-11-12 02:31:33,371 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-12 02:31:33,372 INFO  L225             Difference]: With dead ends: 80
[2023-11-12 02:31:33,372 INFO  L226             Difference]: Without dead ends: 80
[2023-11-12 02:31:33,372 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306
[2023-11-12 02:31:33,373 INFO  L413           NwaCegarLoop]: 42 mSDtfsCounter, 132 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2023-11-12 02:31:33,373 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 284 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2023-11-12 02:31:33,374 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 80 states.
[2023-11-12 02:31:33,376 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80.
[2023-11-12 02:31:33,376 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 80 states, 71 states have (on average 1.0985915492957747) internal successors, (78), 75 states have internal predecessors, (78), 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)
[2023-11-12 02:31:33,377 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 82 transitions.
[2023-11-12 02:31:33,377 INFO  L78                 Accepts]: Start accepts. Automaton has 80 states and 82 transitions. Word has length 59
[2023-11-12 02:31:33,377 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-12 02:31:33,377 INFO  L495      AbstractCegarLoop]: Abstraction has 80 states and 82 transitions.
[2023-11-12 02:31:33,378 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 12 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 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)
[2023-11-12 02:31:33,378 INFO  L276                IsEmpty]: Start isEmpty. Operand 80 states and 82 transitions.
[2023-11-12 02:31:33,378 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 63
[2023-11-12 02:31:33,378 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-12 02:31:33,379 INFO  L195           NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-12 02:31:33,392 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0
[2023-11-12 02:31:33,588 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:33,588 INFO  L420      AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2023-11-12 02:31:33,589 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-12 02:31:33,589 INFO  L85        PathProgramCache]: Analyzing trace with hash -1906105434, now seen corresponding path program 1 times
[2023-11-12 02:31:33,589 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-12 02:31:33,589 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [192703980]
[2023-11-12 02:31:33,590 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:31:33,590 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:33,590 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat
[2023-11-12 02:31:33,593 INFO  L229       MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-12 02:31:33,620 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process
[2023-11-12 02:31:34,062 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-12 02:31:34,082 INFO  L262         TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-12 02:31:34,085 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-12 02:31:34,624 INFO  L134       CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked.
[2023-11-12 02:31:34,624 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-12 02:31:34,624 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-11-12 02:31:34,624 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [192703980]
[2023-11-12 02:31:34,625 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [192703980] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-12 02:31:34,625 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-12 02:31:34,625 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2023-11-12 02:31:34,625 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186058364]
[2023-11-12 02:31:34,625 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-12 02:31:34,625 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2023-11-12 02:31:34,625 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-11-12 02:31:34,626 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2023-11-12 02:31:34,626 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132
[2023-11-12 02:31:34,626 INFO  L87              Difference]: Start difference. First operand 80 states and 82 transitions. Second operand  has 12 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 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)
[2023-11-12 02:31:35,082 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-12 02:31:35,083 INFO  L93              Difference]: Finished difference Result 79 states and 81 transitions.
[2023-11-12 02:31:35,083 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2023-11-12 02:31:35,084 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), 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 62
[2023-11-12 02:31:35,084 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-12 02:31:35,085 INFO  L225             Difference]: With dead ends: 79
[2023-11-12 02:31:35,085 INFO  L226             Difference]: Without dead ends: 79
[2023-11-12 02:31:35,086 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272
[2023-11-12 02:31:35,086 INFO  L413           NwaCegarLoop]: 50 mSDtfsCounter, 122 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-11-12 02:31:35,087 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 292 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-11-12 02:31:35,087 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 79 states.
[2023-11-12 02:31:35,089 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79.
[2023-11-12 02:31:35,090 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 79 states, 71 states have (on average 1.0845070422535212) internal successors, (77), 74 states have internal predecessors, (77), 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)
[2023-11-12 02:31:35,092 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 81 transitions.
[2023-11-12 02:31:35,093 INFO  L78                 Accepts]: Start accepts. Automaton has 79 states and 81 transitions. Word has length 62
[2023-11-12 02:31:35,093 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-12 02:31:35,096 INFO  L495      AbstractCegarLoop]: Abstraction has 79 states and 81 transitions.
[2023-11-12 02:31:35,097 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 12 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 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)
[2023-11-12 02:31:35,097 INFO  L276                IsEmpty]: Start isEmpty. Operand 79 states and 81 transitions.
[2023-11-12 02:31:35,098 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 64
[2023-11-12 02:31:35,098 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-12 02:31:35,098 INFO  L195           NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-12 02:31:35,113 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0
[2023-11-12 02:31:35,312 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:35,312 INFO  L420      AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2023-11-12 02:31:35,313 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-12 02:31:35,313 INFO  L85        PathProgramCache]: Analyzing trace with hash 1899119549, now seen corresponding path program 1 times
[2023-11-12 02:31:35,313 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-12 02:31:35,313 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1687236584]
[2023-11-12 02:31:35,313 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:31:35,314 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:35,314 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat
[2023-11-12 02:31:35,315 INFO  L229       MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-12 02:31:35,318 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process
[2023-11-12 02:31:35,832 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-11-12 02:31:35,832 INFO  L356             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2023-11-12 02:31:36,121 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-11-12 02:31:36,236 INFO  L130   FreeRefinementEngine]: Strategy WOLF found a feasible trace
[2023-11-12 02:31:36,237 INFO  L360         BasicCegarLoop]: Counterexample is feasible
[2023-11-12 02:31:36,238 INFO  L805   garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK (24 of 25 remaining)
[2023-11-12 02:31:36,240 INFO  L805   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE (23 of 25 remaining)
[2023-11-12 02:31:36,240 INFO  L805   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE (22 of 25 remaining)
[2023-11-12 02:31:36,240 INFO  L805   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 25 remaining)
[2023-11-12 02:31:36,240 INFO  L805   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 25 remaining)
[2023-11-12 02:31:36,241 INFO  L805   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 25 remaining)
[2023-11-12 02:31:36,241 INFO  L805   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 25 remaining)
[2023-11-12 02:31:36,241 INFO  L805   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 25 remaining)
[2023-11-12 02:31:36,241 INFO  L805   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 25 remaining)
[2023-11-12 02:31:36,241 INFO  L805   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 25 remaining)
[2023-11-12 02:31:36,242 INFO  L805   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 25 remaining)
[2023-11-12 02:31:36,242 INFO  L805   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 25 remaining)
[2023-11-12 02:31:36,242 INFO  L805   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 25 remaining)
[2023-11-12 02:31:36,242 INFO  L805   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 25 remaining)
[2023-11-12 02:31:36,242 INFO  L805   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 25 remaining)
[2023-11-12 02:31:36,243 INFO  L805   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE (9 of 25 remaining)
[2023-11-12 02:31:36,243 INFO  L805   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE (8 of 25 remaining)
[2023-11-12 02:31:36,243 INFO  L805   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE (7 of 25 remaining)
[2023-11-12 02:31:36,243 INFO  L805   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE (6 of 25 remaining)
[2023-11-12 02:31:36,243 INFO  L805   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE (5 of 25 remaining)
[2023-11-12 02:31:36,244 INFO  L805   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE (4 of 25 remaining)
[2023-11-12 02:31:36,244 INFO  L805   garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 25 remaining)
[2023-11-12 02:31:36,244 INFO  L805   garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 25 remaining)
[2023-11-12 02:31:36,244 INFO  L805   garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 25 remaining)
[2023-11-12 02:31:36,244 INFO  L805   garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 25 remaining)
[2023-11-12 02:31:36,263 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0
[2023-11-12 02:31:36,453 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-12 02:31:36,456 INFO  L445         BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-12 02:31:36,459 INFO  L179   ceAbstractionStarter]: Computing trace abstraction results
[2023-11-12 02:31:36,521 WARN  L1567  BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~ret38
[2023-11-12 02:31:36,523 WARN  L1567  BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #Ultimate.C_memset_#res#1
[2023-11-12 02:31:36,524 WARN  L1567  BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #Ultimate.C_memset_#res#1
[2023-11-12 02:31:36,525 WARN  L1567  BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #Ultimate.C_memset_#res#1
[2023-11-12 02:31:36,525 WARN  L1567  BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #Ultimate.C_memset_#res#1
[2023-11-12 02:31:36,526 WARN  L1567  BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem30 could not be translated
[2023-11-12 02:31:36,526 WARN  L1567  BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #Ultimate.C_memset_#res#1
[2023-11-12 02:31:36,527 WARN  L1567  BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #Ultimate.C_memset_#res#1
[2023-11-12 02:31:36,528 WARN  L1567  BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #Ultimate.C_memset_#res#1
[2023-11-12 02:31:36,528 WARN  L1567  BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #Ultimate.C_memset_#res#1
[2023-11-12 02:31:36,528 WARN  L1567  BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #Ultimate.C_memset_#res#1
[2023-11-12 02:31:36,529 WARN  L1567  BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #Ultimate.C_memset_#res#1
[2023-11-12 02:31:36,530 WARN  L1567  BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem31 could not be translated
[2023-11-12 02:31:36,530 WARN  L1567  BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #Ultimate.C_memset_#res#1
[2023-11-12 02:31:36,538 WARN  L1567  BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #Ultimate.C_memset_#res#1
[2023-11-12 02:31:36,539 WARN  L1567  BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #Ultimate.C_memset_#res#1
[2023-11-12 02:31:36,539 WARN  L1567  BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #Ultimate.C_memset_#res#1
[2023-11-12 02:31:36,540 WARN  L1567  BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #Ultimate.C_memset_#res#1
[2023-11-12 02:31:36,548 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 02:31:36 BoogieIcfgContainer
[2023-11-12 02:31:36,552 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-11-12 02:31:36,552 INFO  L112        PluginConnector]: ------------------------Witness Printer----------------------------
[2023-11-12 02:31:36,552 INFO  L270        PluginConnector]: Initializing Witness Printer...
[2023-11-12 02:31:36,553 INFO  L274        PluginConnector]: Witness Printer initialized
[2023-11-12 02:31:36,553 INFO  L184        PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:31:10" (3/4) ...
[2023-11-12 02:31:36,555 INFO  L140         WitnessPrinter]: No result that supports witness generation found
[2023-11-12 02:31:36,556 INFO  L131        PluginConnector]: ------------------------ END Witness Printer----------------------------
[2023-11-12 02:31:36,557 INFO  L158              Benchmark]: Toolchain (without parser) took 28166.41ms. Allocated memory was 81.8MB in the beginning and 123.7MB in the end (delta: 41.9MB). Free memory was 56.2MB in the beginning and 50.8MB in the end (delta: 5.4MB). Peak memory consumption was 48.6MB. Max. memory is 16.1GB.
[2023-11-12 02:31:36,558 INFO  L158              Benchmark]: CDTParser took 0.34ms. Allocated memory is still 81.8MB. Free memory was 57.2MB in the beginning and 57.1MB in the end (delta: 152.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2023-11-12 02:31:36,561 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 749.22ms. Allocated memory is still 81.8MB. Free memory was 55.9MB in the beginning and 50.8MB in the end (delta: 5.1MB). Peak memory consumption was 23.2MB. Max. memory is 16.1GB.
[2023-11-12 02:31:36,561 INFO  L158              Benchmark]: Boogie Procedure Inliner took 70.04ms. Allocated memory is still 81.8MB. Free memory was 50.8MB in the beginning and 48.2MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2023-11-12 02:31:36,562 INFO  L158              Benchmark]: Boogie Preprocessor took 90.72ms. Allocated memory is still 81.8MB. Free memory was 48.2MB in the beginning and 45.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2023-11-12 02:31:36,562 INFO  L158              Benchmark]: RCFGBuilder took 774.99ms. Allocated memory was 81.8MB in the beginning and 102.8MB in the end (delta: 21.0MB). Free memory was 45.8MB in the beginning and 64.5MB in the end (delta: -18.7MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB.
[2023-11-12 02:31:36,562 INFO  L158              Benchmark]: TraceAbstraction took 26462.75ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 63.5MB in the beginning and 50.8MB in the end (delta: 12.7MB). Peak memory consumption was 34.2MB. Max. memory is 16.1GB.
[2023-11-12 02:31:36,563 INFO  L158              Benchmark]: Witness Printer took 4.17ms. Allocated memory is still 123.7MB. Free memory is still 50.8MB. There was no memory consumed. Max. memory is 16.1GB.
[2023-11-12 02:31:36,570 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.34ms. Allocated memory is still 81.8MB. Free memory was 57.2MB in the beginning and 57.1MB in the end (delta: 152.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
 * CACSL2BoogieTranslator took 749.22ms. Allocated memory is still 81.8MB. Free memory was 55.9MB in the beginning and 50.8MB in the end (delta: 5.1MB). Peak memory consumption was 23.2MB. Max. memory is 16.1GB.
 * Boogie Procedure Inliner took 70.04ms. Allocated memory is still 81.8MB. Free memory was 50.8MB in the beginning and 48.2MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
 * Boogie Preprocessor took 90.72ms. Allocated memory is still 81.8MB. Free memory was 48.2MB in the beginning and 45.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
 * RCFGBuilder took 774.99ms. Allocated memory was 81.8MB in the beginning and 102.8MB in the end (delta: 21.0MB). Free memory was 45.8MB in the beginning and 64.5MB in the end (delta: -18.7MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB.
 * TraceAbstraction took 26462.75ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 63.5MB in the beginning and 50.8MB in the end (delta: 12.7MB). Peak memory consumption was 34.2MB. Max. memory is 16.1GB.
 * Witness Printer took 4.17ms. Allocated memory is still 123.7MB. Free memory is still 50.8MB. There was no memory consumed. Max. memory is 16.1GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator:
  - GenericResult: Unfinished Backtranslation
    Unfinished Backtranslation: unknown boogie variable #t~ret38
  - GenericResult: Unfinished Backtranslation
    Unfinished Backtranslation: unknown boogie variable #Ultimate.C_memset_#res#1
  - GenericResult: Unfinished Backtranslation
    Unfinished Backtranslation: unknown boogie variable #Ultimate.C_memset_#res#1
  - GenericResult: Unfinished Backtranslation
    Unfinished Backtranslation: unknown boogie variable #Ultimate.C_memset_#res#1
  - GenericResult: Unfinished Backtranslation
    Unfinished Backtranslation: unknown boogie variable #Ultimate.C_memset_#res#1
  - GenericResult: Unfinished Backtranslation
    Unfinished Backtranslation: IdentifierExpression #t~mem30 could not be translated
  - GenericResult: Unfinished Backtranslation
    Unfinished Backtranslation: unknown boogie variable #Ultimate.C_memset_#res#1
  - GenericResult: Unfinished Backtranslation
    Unfinished Backtranslation: unknown boogie variable #Ultimate.C_memset_#res#1
  - GenericResult: Unfinished Backtranslation
    Unfinished Backtranslation: unknown boogie variable #Ultimate.C_memset_#res#1
  - GenericResult: Unfinished Backtranslation
    Unfinished Backtranslation: unknown boogie variable #Ultimate.C_memset_#res#1
  - GenericResult: Unfinished Backtranslation
    Unfinished Backtranslation: unknown boogie variable #Ultimate.C_memset_#res#1
  - GenericResult: Unfinished Backtranslation
    Unfinished Backtranslation: unknown boogie variable #Ultimate.C_memset_#res#1
  - GenericResult: Unfinished Backtranslation
    Unfinished Backtranslation: IdentifierExpression #t~mem31 could not be translated
  - GenericResult: Unfinished Backtranslation
    Unfinished Backtranslation: unknown boogie variable #Ultimate.C_memset_#res#1
  - GenericResult: Unfinished Backtranslation
    Unfinished Backtranslation: unknown boogie variable #Ultimate.C_memset_#res#1
  - GenericResult: Unfinished Backtranslation
    Unfinished Backtranslation: unknown boogie variable #Ultimate.C_memset_#res#1
  - GenericResult: Unfinished Backtranslation
    Unfinished Backtranslation: unknown boogie variable #Ultimate.C_memset_#res#1
  - GenericResult: Unfinished Backtranslation
    Unfinished Backtranslation: unknown boogie variable #Ultimate.C_memset_#res#1
  - GenericResult: Unfinished Backtranslation
    The program execution was not completely translated back.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - StatisticsResult: ErrorAutomatonStatistics
    NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
  - UnprovableResult [Line: 763]: Unable to prove that all allocated memory was freed
    Unable to prove that all allocated memory was freed
 Reason: overapproximation of memtrack at line 763. 
Possible FailurePath: 
[L569]              struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) };
        VAL         [ldv_global_msg_list={1:0}]
[L764]  CALL        entry_point()
[L758]              struct ldv_kobject *kobj;
[L759]  CALL, EXPR  ldv_kobject_create()
[L740]              struct ldv_kobject *kobj;
        VAL         [ldv_global_msg_list={1:0}]
[L741]  CALL, EXPR  ldv_malloc(sizeof(*kobj))
        VAL         [\old(size)=16, ldv_global_msg_list={1:0}]
[L526]  COND TRUE   __VERIFIER_nondet_int()
[L527]              return malloc(size);
[L741]  RET, EXPR   ldv_malloc(sizeof(*kobj))
        VAL         [ldv_global_msg_list={1:0}]
[L741]              kobj = ldv_malloc(sizeof(*kobj))
[L742]  COND FALSE  !(!kobj)
[L744]  FCALL       memset(kobj, 0, sizeof(*kobj))
[L745]  CALL        ldv_kobject_init(kobj)
[L730]  COND FALSE  !(!kobj)
[L733]  CALL        ldv_kobject_init_internal(kobj)
[L723]  COND FALSE  !(!kobj)
[L725]  CALL        ldv_kref_init(&kobj->kref)
[L682]              ((&kref->refcount)->counter) = (1)
        VAL         [kref={2:12}, kref={2:12}, ldv_global_msg_list={1:0}]
[L725]  RET         ldv_kref_init(&kobj->kref)
[L726]  CALL        LDV_INIT_LIST_HEAD(&kobj->entry)
        VAL         [ldv_global_msg_list={1:0}, list={2:4}]
[L540]              list->next = list
        VAL         [ldv_global_msg_list={1:0}, list={2:4}, list={2:4}]
[L541]              list->prev = list
        VAL         [ldv_global_msg_list={1:0}, list={2:4}, list={2:4}]
[L726]  RET         LDV_INIT_LIST_HEAD(&kobj->entry)
        VAL         [kobj={2:0}, kobj={2:0}, ldv_global_msg_list={1:0}]
[L733]  RET         ldv_kobject_init_internal(kobj)
[L745]  RET         ldv_kobject_init(kobj)
[L746]              return kobj;
        VAL         [\result={2:0}, kobj={2:0}, ldv_global_msg_list={1:0}]
[L759]  RET, EXPR   ldv_kobject_create()
[L759]              kobj = ldv_kobject_create()
[L760]  CALL        ldv_kobject_get(kobj)
[L717]  COND TRUE   \read(*kobj)
[L718]  CALL        ldv_kref_get(&kobj->kref)
[L686]  CALL        ldv_atomic_add_return(1, (&kref->refcount))
[L657]              int temp;
        VAL         [\old(i)=1, i=1, ldv_global_msg_list={1:0}, v={2:12}, v={2:12}]
[L658]  EXPR        v->counter
        VAL         [\old(i)=1, i=1, ldv_global_msg_list={1:0}, v={2:12}, v={2:12}]
[L658]              temp = v->counter
[L659]              temp += i
        VAL         [\old(i)=1, i=1, ldv_global_msg_list={1:0}, temp=2, v={2:12}, v={2:12}]
[L660]              v->counter = temp
        VAL         [\old(i)=1, i=1, ldv_global_msg_list={1:0}, temp=2, v={2:12}, v={2:12}]
[L661]              return temp;
        VAL         [\old(i)=1, \result=2, i=1, ldv_global_msg_list={1:0}, temp=2, v={2:12}, v={2:12}]
[L686]  RET         ldv_atomic_add_return(1, (&kref->refcount))
[L718]  RET         ldv_kref_get(&kobj->kref)
[L719]              return kobj;
        VAL         [\result={2:0}, kobj={2:0}, kobj={2:0}, ldv_global_msg_list={1:0}]
[L760]  RET         ldv_kobject_get(kobj)
[L761]  CALL        ldv_kobject_put(kobj)
[L711]  COND TRUE   \read(*kobj)
[L712]  CALL        ldv_kref_put(&kobj->kref, ldv_kobject_release)
[L690]  CALL, EXPR  ldv_kref_sub(kref, 1, release)
[L674]  CALL, EXPR  ldv_atomic_sub_return(((int) count), (&kref->refcount))
[L665]              int temp;
        VAL         [\old(i)=1, i=1, ldv_global_msg_list={1:0}, v={2:12}, v={2:12}]
[L666]  EXPR        v->counter
        VAL         [\old(i)=1, i=1, ldv_global_msg_list={1:0}, v={2:12}, v={2:12}]
[L666]              temp = v->counter
[L667]              temp -= i
        VAL         [\old(i)=1, i=1, ldv_global_msg_list={1:0}, temp=1, v={2:12}, v={2:12}]
[L668]              v->counter = temp
        VAL         [\old(i)=1, i=1, ldv_global_msg_list={1:0}, temp=1, v={2:12}, v={2:12}]
[L669]              return temp;
        VAL         [\old(i)=1, \result=1, i=1, ldv_global_msg_list={1:0}, temp=1, v={2:12}, v={2:12}]
[L674]  RET, EXPR   ldv_atomic_sub_return(((int) count), (&kref->refcount))
[L674]  COND FALSE  !((ldv_atomic_sub_return(((int) count), (&kref->refcount)) == 0))
[L678]              return 0;
        VAL         [\old(count)=1, \result=0, count=1, kref={2:12}, kref={2:12}, ldv_global_msg_list={1:0}, release={-1:0}, release={-1:0}]
[L690]  RET, EXPR   ldv_kref_sub(kref, 1, release)
[L690]              return ldv_kref_sub(kref, 1, release);
[L712]  RET         ldv_kref_put(&kobj->kref, ldv_kobject_release)
[L761]  RET         ldv_kobject_put(kobj)
[L764]  RET         entry_point()

  - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
    Unable to prove that pointer dereference always succeeds
 Reason: Not analyzed. 
  - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
    Unable to prove that pointer dereference always succeeds
 Reason: Not analyzed. 
  - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
    Unable to prove that pointer dereference always succeeds
 Reason: Not analyzed. 
  - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
    Unable to prove that pointer dereference always succeeds
 Reason: Not analyzed. 
  - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
    Unable to prove that pointer dereference always succeeds
 Reason: Not analyzed. 
  - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
    Unable to prove that pointer dereference always succeeds
 Reason: Not analyzed. 
  - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
    Unable to prove that pointer dereference always succeeds
 Reason: Not analyzed. 
  - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
    Unable to prove that pointer dereference always succeeds
 Reason: Not analyzed. 
  - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
    Unable to prove that pointer dereference always succeeds
 Reason: Not analyzed. 
  - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
    Unable to prove that pointer dereference always succeeds
 Reason: Not analyzed. 
  - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
    Unable to prove that pointer dereference always succeeds
 Reason: Not analyzed. 
  - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
    Unable to prove that pointer dereference always succeeds
 Reason: Not analyzed. 
  - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
    Unable to prove that pointer dereference always succeeds
 Reason: Not analyzed. 
  - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
    Unable to prove that pointer dereference always succeeds
 Reason: Not analyzed. 
  - UnprovableResult [Line: 700]: Unable to prove that free always succeeds
    Unable to prove that free always succeeds
 Reason: Not analyzed. 
  - UnprovableResult [Line: 700]: Unable to prove that free always succeeds
    Unable to prove that free always succeeds
 Reason: Not analyzed. 
  - UnprovableResult [Line: 700]: Unable to prove that free always succeeds
    Unable to prove that free always succeeds
 Reason: Not analyzed. 
  - UnprovableResult [Line: 702]: Unable to prove that free always succeeds
    Unable to prove that free always succeeds
 Reason: Not analyzed. 
  - UnprovableResult [Line: 702]: Unable to prove that free always succeeds
    Unable to prove that free always succeeds
 Reason: Not analyzed. 
  - UnprovableResult [Line: 702]: Unable to prove that free always succeeds
    Unable to prove that free always succeeds
 Reason: Not analyzed. 
  - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
    Unable to prove that pointer dereference always succeeds
 Reason: Not analyzed. 
  - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
    Unable to prove that pointer dereference always succeeds
 Reason: Not analyzed. 
  - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
    Unable to prove that pointer dereference always succeeds
 Reason: Not analyzed. 
  - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
    Unable to prove that pointer dereference always succeeds
 Reason: Not analyzed. 
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 3 procedures, 86 locations, 25 error locations. Started 1 CEGAR loops. OverallTime: 26.3s, OverallIterations: 27, TraceHistogramMax: 16, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 8.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1241 SdHoareTripleChecker+Valid, 6.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1238 mSDsluCounter, 9641 SdHoareTripleChecker+Invalid, 5.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7804 mSDsCounter, 35 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2909 IncrementalHoareTripleChecker+Invalid, 2944 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 35 mSolverCounterUnsat, 1837 mSDtfsCounter, 2909 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 940 GetRequests, 686 SyntacticMatches, 7 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=96occurred in iteration=13, InterpolantAutomatonStates: 230, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 26 MinimizatonAttempts, 81 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 6.1s InterpolantComputationTime, 895 NumberOfCodeBlocks, 865 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 868 ConstructedInterpolants, 35 QuantifiedInterpolants, 4706 SizeOfPredicates, 192 NumberOfNonLiveVariables, 5175 ConjunctsInSsa, 350 ConjunctsInUnsatCore, 29 InterpolantComputations, 23 PerfectInterpolantSequences, 1833/1965 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces
[2023-11-12 02:31:36,601 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9160a32e-79e3-4d95-9399-53e2d54df292/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...
--- End real Ultimate output ---

Execution finished normally
Writing output log to file Ultimate.log
Result:
UNKNOWN: Overapproximated counterexample