./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-3.i --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for memory safety (deref-memtrack)
Using default analysis
Version 53f42b1a
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF --witnessprinter.witness.filename witness.graphml --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 c9492eb5ff634b400a7a5ea3f7f2cefeb5465f9e5361bb81d240cec0c0c035af
--- Real Ultimate output ---
This is Ultimate 0.2.1-dev-53f42b1
[2021-11-20 07:15:39,005 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-11-20 07:15:39,007 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-11-20 07:15:39,039 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-11-20 07:15:39,039 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-11-20 07:15:39,041 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-11-20 07:15:39,043 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-11-20 07:15:39,045 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-11-20 07:15:39,047 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-11-20 07:15:39,048 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-11-20 07:15:39,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-11-20 07:15:39,051 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-11-20 07:15:39,052 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-11-20 07:15:39,054 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-11-20 07:15:39,056 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-11-20 07:15:39,058 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-11-20 07:15:39,059 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-11-20 07:15:39,060 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-11-20 07:15:39,063 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-11-20 07:15:39,065 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-11-20 07:15:39,068 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-11-20 07:15:39,069 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-11-20 07:15:39,071 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-11-20 07:15:39,072 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-11-20 07:15:39,075 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-11-20 07:15:39,076 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-11-20 07:15:39,076 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-11-20 07:15:39,078 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-11-20 07:15:39,078 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-11-20 07:15:39,080 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-11-20 07:15:39,080 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-11-20 07:15:39,081 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-11-20 07:15:39,082 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-11-20 07:15:39,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2021-11-20 07:15:39,085 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-11-20 07:15:39,085 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2021-11-20 07:15:39,086 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-11-20 07:15:39,087 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-11-20 07:15:39,087 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2021-11-20 07:15:39,088 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2021-11-20 07:15:39,089 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-11-20 07:15:39,090 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf
[2021-11-20 07:15:39,116 INFO L113 SettingsManager]: Loading preferences was successful
[2021-11-20 07:15:39,116 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-11-20 07:15:39,116 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-11-20 07:15:39,117 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-11-20 07:15:39,117 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-11-20 07:15:39,118 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-11-20 07:15:39,118 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-11-20 07:15:39,119 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-11-20 07:15:39,119 INFO L138 SettingsManager]: * Use SBE=true
[2021-11-20 07:15:39,119 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-11-20 07:15:39,119 INFO L138 SettingsManager]: * sizeof long=4
[2021-11-20 07:15:39,120 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false
[2021-11-20 07:15:39,120 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-11-20 07:15:39,120 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-11-20 07:15:39,120 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-11-20 07:15:39,120 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true
[2021-11-20 07:15:39,121 INFO L138 SettingsManager]: * Bitprecise bitfields=true
[2021-11-20 07:15:39,121 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true
[2021-11-20 07:15:39,121 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-11-20 07:15:39,121 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2021-11-20 07:15:39,122 INFO L138 SettingsManager]: * sizeof long double=12
[2021-11-20 07:15:39,122 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-11-20 07:15:39,122 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-11-20 07:15:39,122 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-11-20 07:15:39,123 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-11-20 07:15:39,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-20 07:15:39,123 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-11-20 07:15:39,123 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-11-20 07:15:39,124 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2021-11-20 07:15:39,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-11-20 07:15:39,124 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2021-11-20 07:15:39,124 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
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_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9492eb5ff634b400a7a5ea3f7f2cefeb5465f9e5361bb81d240cec0c0c035af
[2021-11-20 07:15:39,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-11-20 07:15:39,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-11-20 07:15:39,388 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-11-20 07:15:39,390 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-11-20 07:15:39,393 INFO L275 PluginConnector]: CDTParser initialized
[2021-11-20 07:15:39,396 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-3.i
[2021-11-20 07:15:39,472 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/data/c9d5f1832/415806daf6b84026b87b86f0a13bd1a5/FLAG167533565
[2021-11-20 07:15:40,167 INFO L306 CDTParser]: Found 1 translation units.
[2021-11-20 07:15:40,169 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-3.i
[2021-11-20 07:15:40,192 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/data/c9d5f1832/415806daf6b84026b87b86f0a13bd1a5/FLAG167533565
[2021-11-20 07:15:40,344 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/data/c9d5f1832/415806daf6b84026b87b86f0a13bd1a5
[2021-11-20 07:15:40,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-11-20 07:15:40,348 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2021-11-20 07:15:40,349 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-11-20 07:15:40,349 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-11-20 07:15:40,353 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-11-20 07:15:40,353 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:15:40" (1/1) ...
[2021-11-20 07:15:40,355 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13ee8690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:15:40, skipping insertion in model container
[2021-11-20 07:15:40,355 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:15:40" (1/1) ...
[2021-11-20 07:15:40,362 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-11-20 07:15:40,423 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-11-20 07:15:40,909 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-3.i[33022,33035]
[2021-11-20 07:15:41,218 INFO L209 PostProcessor]: Analyzing one entry point: main
[2021-11-20 07:15:41,228 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation)
[2021-11-20 07:15:41,240 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7c3eea97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:15:41, skipping insertion in model container
[2021-11-20 07:15:41,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-11-20 07:15:41,241 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner
[2021-11-20 07:15:41,243 INFO L158 Benchmark]: Toolchain (without parser) took 894.39ms. Allocated memory is still 98.6MB. Free memory was 60.9MB in the beginning and 52.8MB in the end (delta: 8.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
[2021-11-20 07:15:41,244 INFO L158 Benchmark]: CDTParser took 0.90ms. Allocated memory is still 98.6MB. Free memory was 71.8MB in the beginning and 71.8MB in the end (delta: 30.2kB). There was no memory consumed. Max. memory is 16.1GB.
[2021-11-20 07:15:41,245 INFO L158 Benchmark]: CACSL2BoogieTranslator took 891.94ms. Allocated memory is still 98.6MB. Free memory was 60.7MB in the beginning and 52.8MB in the end (delta: 8.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
[2021-11-20 07:15:41,246 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.90ms. Allocated memory is still 98.6MB. Free memory was 71.8MB in the beginning and 71.8MB in the end (delta: 30.2kB). There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 891.94ms. Allocated memory is still 98.6MB. Free memory was 60.7MB in the beginning and 52.8MB in the end (delta: 8.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator:
- UnsupportedSyntaxResult [Line: 734]: Unsupported Syntax
Found a cast between two array/pointer types where the value type is smaller than the cast-to type 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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF --witnessprinter.witness.filename witness.graphml --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 c9492eb5ff634b400a7a5ea3f7f2cefeb5465f9e5361bb81d240cec0c0c035af
--- Real Ultimate output ---
This is Ultimate 0.2.1-dev-53f42b1
[2021-11-20 07:15:43,472 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-11-20 07:15:43,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-11-20 07:15:43,505 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-11-20 07:15:43,505 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-11-20 07:15:43,506 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-11-20 07:15:43,508 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-11-20 07:15:43,510 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-11-20 07:15:43,512 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-11-20 07:15:43,513 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-11-20 07:15:43,515 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-11-20 07:15:43,516 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-11-20 07:15:43,516 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-11-20 07:15:43,518 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-11-20 07:15:43,519 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-11-20 07:15:43,520 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-11-20 07:15:43,521 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-11-20 07:15:43,522 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-11-20 07:15:43,524 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-11-20 07:15:43,526 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-11-20 07:15:43,528 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-11-20 07:15:43,529 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-11-20 07:15:43,531 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-11-20 07:15:43,531 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-11-20 07:15:43,535 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-11-20 07:15:43,535 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-11-20 07:15:43,536 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-11-20 07:15:43,537 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-11-20 07:15:43,537 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-11-20 07:15:43,538 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-11-20 07:15:43,539 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-11-20 07:15:43,540 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-11-20 07:15:43,541 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-11-20 07:15:43,541 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2021-11-20 07:15:43,543 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-11-20 07:15:43,543 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2021-11-20 07:15:43,544 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-11-20 07:15:43,544 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-11-20 07:15:43,544 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2021-11-20 07:15:43,545 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2021-11-20 07:15:43,546 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-11-20 07:15:43,547 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf
[2021-11-20 07:15:43,575 INFO L113 SettingsManager]: Loading preferences was successful
[2021-11-20 07:15:43,575 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-11-20 07:15:43,575 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-11-20 07:15:43,576 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-11-20 07:15:43,577 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-11-20 07:15:43,577 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-11-20 07:15:43,578 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-11-20 07:15:43,578 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-11-20 07:15:43,578 INFO L138 SettingsManager]: * Use SBE=true
[2021-11-20 07:15:43,579 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-11-20 07:15:43,579 INFO L138 SettingsManager]: * sizeof long=4
[2021-11-20 07:15:43,579 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false
[2021-11-20 07:15:43,580 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-11-20 07:15:43,580 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-11-20 07:15:43,580 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-11-20 07:15:43,580 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true
[2021-11-20 07:15:43,581 INFO L138 SettingsManager]: * Bitprecise bitfields=true
[2021-11-20 07:15:43,581 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true
[2021-11-20 07:15:43,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-11-20 07:15:43,581 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2021-11-20 07:15:43,582 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true
[2021-11-20 07:15:43,582 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution
[2021-11-20 07:15:43,582 INFO L138 SettingsManager]: * sizeof long double=12
[2021-11-20 07:15:43,582 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-11-20 07:15:43,584 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-11-20 07:15:43,584 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-11-20 07:15:43,585 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-11-20 07:15:43,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-20 07:15:43,585 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-11-20 07:15:43,585 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-11-20 07:15:43,585 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF
[2021-11-20 07:15:43,586 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt
[2021-11-20 07:15:43,586 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2021-11-20 07:15:43,586 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2021-11-20 07:15:43,586 INFO L138 SettingsManager]: * Logic for external solver=AUFBV
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_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9492eb5ff634b400a7a5ea3f7f2cefeb5465f9e5361bb81d240cec0c0c035af
[2021-11-20 07:15:44,024 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-11-20 07:15:44,049 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-11-20 07:15:44,052 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-11-20 07:15:44,053 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-11-20 07:15:44,055 INFO L275 PluginConnector]: CDTParser initialized
[2021-11-20 07:15:44,056 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-3.i
[2021-11-20 07:15:44,133 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/data/ac73ccfc9/7c7a76c8e2b845c28199538f034abca1/FLAG8f5960a36
[2021-11-20 07:15:44,926 INFO L306 CDTParser]: Found 1 translation units.
[2021-11-20 07:15:44,927 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-3.i
[2021-11-20 07:15:44,946 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/data/ac73ccfc9/7c7a76c8e2b845c28199538f034abca1/FLAG8f5960a36
[2021-11-20 07:15:45,136 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/data/ac73ccfc9/7c7a76c8e2b845c28199538f034abca1
[2021-11-20 07:15:45,138 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-11-20 07:15:45,139 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2021-11-20 07:15:45,152 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-11-20 07:15:45,152 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-11-20 07:15:45,156 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-11-20 07:15:45,156 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:15:45" (1/1) ...
[2021-11-20 07:15:45,157 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21bb9dc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:15:45, skipping insertion in model container
[2021-11-20 07:15:45,158 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:15:45" (1/1) ...
[2021-11-20 07:15:45,163 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-11-20 07:15:45,238 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-11-20 07:15:45,722 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-3.i[33022,33035]
[2021-11-20 07:15:46,029 INFO L209 PostProcessor]: Analyzing one entry point: main
[2021-11-20 07:15:46,045 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution]
[2021-11-20 07:15:46,069 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-11-20 07:15:46,100 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-3.i[33022,33035]
[2021-11-20 07:15:46,269 INFO L209 PostProcessor]: Analyzing one entry point: main
[2021-11-20 07:15:46,277 INFO L203 MainTranslator]: Completed pre-run
[2021-11-20 07:15:46,311 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-3.i[33022,33035]
[2021-11-20 07:15:46,481 INFO L209 PostProcessor]: Analyzing one entry point: main
[2021-11-20 07:15:46,531 INFO L208 MainTranslator]: Completed translation
[2021-11-20 07:15:46,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:15:46 WrapperNode
[2021-11-20 07:15:46,535 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-11-20 07:15:46,537 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-11-20 07:15:46,537 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-11-20 07:15:46,537 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2021-11-20 07:15:46,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:15:46" (1/1) ...
[2021-11-20 07:15:46,633 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:15:46" (1/1) ...
[2021-11-20 07:15:46,758 INFO L137 Inliner]: procedures = 180, calls = 623, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2491
[2021-11-20 07:15:46,759 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-11-20 07:15:46,760 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-11-20 07:15:46,760 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-11-20 07:15:46,760 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-11-20 07:15:46,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:15:46" (1/1) ...
[2021-11-20 07:15:46,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:15:46" (1/1) ...
[2021-11-20 07:15:46,782 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:15:46" (1/1) ...
[2021-11-20 07:15:46,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:15:46" (1/1) ...
[2021-11-20 07:15:46,900 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:15:46" (1/1) ...
[2021-11-20 07:15:46,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:15:46" (1/1) ...
[2021-11-20 07:15:46,945 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:15:46" (1/1) ...
[2021-11-20 07:15:46,965 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-11-20 07:15:46,966 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-11-20 07:15:46,966 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-11-20 07:15:46,966 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-11-20 07:15:46,967 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:15:46" (1/1) ...
[2021-11-20 07:15:46,973 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-20 07:15:46,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/z3
[2021-11-20 07:15:46,994 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-11-20 07:15:47,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-11-20 07:15:47,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1
[2021-11-20 07:15:47,041 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int
[2021-11-20 07:15:47,041 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int
[2021-11-20 07:15:47,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4
[2021-11-20 07:15:47,041 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2021-11-20 07:15:47,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2021-11-20 07:15:47,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset
[2021-11-20 07:15:47,042 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset
[2021-11-20 07:15:47,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2021-11-20 07:15:47,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2021-11-20 07:15:47,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2021-11-20 07:15:47,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-11-20 07:15:47,042 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp
[2021-11-20 07:15:47,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2021-11-20 07:15:47,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-11-20 07:15:47,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4
[2021-11-20 07:15:47,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2021-11-20 07:15:47,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-11-20 07:15:47,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-11-20 07:15:47,417 INFO L236 CfgBuilder]: Building ICFG
[2021-11-20 07:15:47,419 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation
[2021-11-20 07:15:47,423 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock.
[2021-11-20 07:15:57,391 INFO L277 CfgBuilder]: Performing block encoding
[2021-11-20 07:15:57,411 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-11-20 07:15:57,411 INFO L301 CfgBuilder]: Removed 168 assume(true) statements.
[2021-11-20 07:15:57,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:15:57 BoogieIcfgContainer
[2021-11-20 07:15:57,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-11-20 07:15:57,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-11-20 07:15:57,420 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-11-20 07:15:57,426 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-11-20 07:15:57,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:15:45" (1/3) ...
[2021-11-20 07:15:57,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bd4e3fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:15:57, skipping insertion in model container
[2021-11-20 07:15:57,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:15:46" (2/3) ...
[2021-11-20 07:15:57,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bd4e3fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:15:57, skipping insertion in model container
[2021-11-20 07:15:57,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:15:57" (3/3) ...
[2021-11-20 07:15:57,429 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test10-3.i
[2021-11-20 07:15:57,435 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-11-20 07:15:57,436 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1193 error locations.
[2021-11-20 07:15:57,491 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-11-20 07:15:57,502 INFO L339 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=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR
[2021-11-20 07:15:57,502 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1193 error locations.
[2021-11-20 07:15:57,555 INFO L276 IsEmpty]: Start isEmpty. Operand has 2437 states, 1232 states have (on average 2.2280844155844157) internal successors, (2745), 2423 states have internal predecessors, (2745), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14)
[2021-11-20 07:15:57,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4
[2021-11-20 07:15:57,561 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:15:57,562 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1]
[2021-11-20 07:15:57,562 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] ===
[2021-11-20 07:15:57,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:15:57,568 INFO L85 PathProgramCache]: Analyzing trace with hash 66598, now seen corresponding path program 1 times
[2021-11-20 07:15:57,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-20 07:15:57,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1750584141]
[2021-11-20 07:15:57,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:15:57,581 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-20 07:15:57,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat
[2021-11-20 07:15:57,584 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-20 07:15:57,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process
[2021-11-20 07:15:57,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 07:15:57,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core
[2021-11-20 07:15:57,854 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:15:57,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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
[2021-11-20 07:15:57,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:15:57,933 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:15:57,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:15:57,954 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-20 07:15:57,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1750584141]
[2021-11-20 07:15:57,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1750584141] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-20 07:15:57,955 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-20 07:15:57,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2
[2021-11-20 07:15:57,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850725281]
[2021-11-20 07:15:57,958 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-20 07:15:57,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-20 07:15:57,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-20 07:15:57,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-20 07:15:57,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-20 07:15:57,995 INFO L87 Difference]: Start difference. First operand has 2437 states, 1232 states have (on average 2.2280844155844157) internal successors, (2745), 2423 states have internal predecessors, (2745), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:16:03,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:16:03,083 INFO L93 Difference]: Finished difference Result 3281 states and 3483 transitions.
[2021-11-20 07:16:03,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-11-20 07:16:03,085 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3
[2021-11-20 07:16:03,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:16:03,118 INFO L225 Difference]: With dead ends: 3281
[2021-11-20 07:16:03,118 INFO L226 Difference]: Without dead ends: 3279
[2021-11-20 07:16:03,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-20 07:16:03,124 INFO L933 BasicCegarLoop]: 1665 mSDtfsCounter, 2318 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 1661 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2328 SdHoareTripleChecker+Valid, 2230 SdHoareTripleChecker+Invalid, 1684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2021-11-20 07:16:03,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2328 Valid, 2230 Invalid, 1684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1661 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2021-11-20 07:16:03,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3279 states.
[2021-11-20 07:16:03,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3279 to 2579.
[2021-11-20 07:16:03,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2579 states, 1398 states have (on average 2.067238912732475) internal successors, (2890), 2563 states have internal predecessors, (2890), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16)
[2021-11-20 07:16:03,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2579 states to 2579 states and 2922 transitions.
[2021-11-20 07:16:03,308 INFO L78 Accepts]: Start accepts. Automaton has 2579 states and 2922 transitions. Word has length 3
[2021-11-20 07:16:03,309 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:16:03,309 INFO L470 AbstractCegarLoop]: Abstraction has 2579 states and 2922 transitions.
[2021-11-20 07:16:03,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:16:03,310 INFO L276 IsEmpty]: Start isEmpty. Operand 2579 states and 2922 transitions.
[2021-11-20 07:16:03,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4
[2021-11-20 07:16:03,310 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:16:03,310 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1]
[2021-11-20 07:16:03,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0
[2021-11-20 07:16:03,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3
[2021-11-20 07:16:03,525 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] ===
[2021-11-20 07:16:03,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:16:03,528 INFO L85 PathProgramCache]: Analyzing trace with hash 66599, now seen corresponding path program 1 times
[2021-11-20 07:16:03,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-20 07:16:03,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1405980714]
[2021-11-20 07:16:03,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:16:03,530 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-20 07:16:03,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat
[2021-11-20 07:16:03,531 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-20 07:16:03,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process
[2021-11-20 07:16:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 07:16:03,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core
[2021-11-20 07:16:03,787 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:16:03,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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
[2021-11-20 07:16:03,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:16:03,832 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:16:03,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:16:03,892 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-20 07:16:03,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1405980714]
[2021-11-20 07:16:03,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1405980714] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-20 07:16:03,894 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-20 07:16:03,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3
[2021-11-20 07:16:03,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069548365]
[2021-11-20 07:16:03,895 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-20 07:16:03,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-20 07:16:03,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-20 07:16:03,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-20 07:16:03,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-11-20 07:16:03,899 INFO L87 Difference]: Start difference. First operand 2579 states and 2922 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:16:15,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:16:15,101 INFO L93 Difference]: Finished difference Result 4057 states and 4519 transitions.
[2021-11-20 07:16:15,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-11-20 07:16:15,103 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3
[2021-11-20 07:16:15,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:16:15,127 INFO L225 Difference]: With dead ends: 4057
[2021-11-20 07:16:15,127 INFO L226 Difference]: Without dead ends: 4057
[2021-11-20 07:16:15,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-11-20 07:16:15,129 INFO L933 BasicCegarLoop]: 1776 mSDtfsCounter, 3042 mSDsluCounter, 1932 mSDsCounter, 0 mSdLazyCounter, 2497 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3050 SdHoareTripleChecker+Valid, 3708 SdHoareTripleChecker+Invalid, 2520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time
[2021-11-20 07:16:15,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3050 Valid, 3708 Invalid, 2520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2497 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time]
[2021-11-20 07:16:15,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4057 states.
[2021-11-20 07:16:15,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4057 to 2743.
[2021-11-20 07:16:15,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2743 states, 1574 states have (on average 2.053367217280813) internal successors, (3232), 2727 states have internal predecessors, (3232), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16)
[2021-11-20 07:16:15,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2743 states to 2743 states and 3264 transitions.
[2021-11-20 07:16:15,240 INFO L78 Accepts]: Start accepts. Automaton has 2743 states and 3264 transitions. Word has length 3
[2021-11-20 07:16:15,240 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:16:15,240 INFO L470 AbstractCegarLoop]: Abstraction has 2743 states and 3264 transitions.
[2021-11-20 07:16:15,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:16:15,241 INFO L276 IsEmpty]: Start isEmpty. Operand 2743 states and 3264 transitions.
[2021-11-20 07:16:15,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2021-11-20 07:16:15,241 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:16:15,241 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:16:15,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0
[2021-11-20 07:16:15,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3
[2021-11-20 07:16:15,454 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] ===
[2021-11-20 07:16:15,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:16:15,456 INFO L85 PathProgramCache]: Analyzing trace with hash -305791726, now seen corresponding path program 1 times
[2021-11-20 07:16:15,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-20 07:16:15,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [26705721]
[2021-11-20 07:16:15,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:16:15,461 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-20 07:16:15,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat
[2021-11-20 07:16:15,462 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-20 07:16:15,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process
[2021-11-20 07:16:15,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 07:16:15,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core
[2021-11-20 07:16:15,677 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:16:15,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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
[2021-11-20 07:16:15,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:16:15,718 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:16:15,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:16:15,744 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-20 07:16:15,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [26705721]
[2021-11-20 07:16:15,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [26705721] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-20 07:16:15,745 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-20 07:16:15,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2
[2021-11-20 07:16:15,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627499453]
[2021-11-20 07:16:15,746 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-20 07:16:15,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-20 07:16:15,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-20 07:16:15,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-20 07:16:15,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-20 07:16:15,749 INFO L87 Difference]: Start difference. First operand 2743 states and 3264 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:16:19,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:16:19,971 INFO L93 Difference]: Finished difference Result 3481 states and 4002 transitions.
[2021-11-20 07:16:19,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-11-20 07:16:19,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8
[2021-11-20 07:16:19,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:16:19,993 INFO L225 Difference]: With dead ends: 3481
[2021-11-20 07:16:19,993 INFO L226 Difference]: Without dead ends: 3481
[2021-11-20 07:16:19,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-20 07:16:19,998 INFO L933 BasicCegarLoop]: 2347 mSDtfsCounter, 1987 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 1577 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1997 SdHoareTripleChecker+Valid, 3185 SdHoareTripleChecker+Invalid, 1679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time
[2021-11-20 07:16:20,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1997 Valid, 3185 Invalid, 1679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1577 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time]
[2021-11-20 07:16:20,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3481 states.
[2021-11-20 07:16:20,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3481 to 2652.
[2021-11-20 07:16:20,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2652 states, 1574 states have (on average 1.9739517153748412) internal successors, (3107), 2636 states have internal predecessors, (3107), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16)
[2021-11-20 07:16:20,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2652 states to 2652 states and 3139 transitions.
[2021-11-20 07:16:20,092 INFO L78 Accepts]: Start accepts. Automaton has 2652 states and 3139 transitions. Word has length 8
[2021-11-20 07:16:20,093 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:16:20,093 INFO L470 AbstractCegarLoop]: Abstraction has 2652 states and 3139 transitions.
[2021-11-20 07:16:20,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:16:20,094 INFO L276 IsEmpty]: Start isEmpty. Operand 2652 states and 3139 transitions.
[2021-11-20 07:16:20,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2021-11-20 07:16:20,095 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:16:20,095 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:16:20,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0
[2021-11-20 07:16:20,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3
[2021-11-20 07:16:20,311 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] ===
[2021-11-20 07:16:20,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:16:20,312 INFO L85 PathProgramCache]: Analyzing trace with hash -305791725, now seen corresponding path program 1 times
[2021-11-20 07:16:20,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-20 07:16:20,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1640760204]
[2021-11-20 07:16:20,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:16:20,314 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-20 07:16:20,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat
[2021-11-20 07:16:20,315 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-20 07:16:20,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process
[2021-11-20 07:16:20,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 07:16:20,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core
[2021-11-20 07:16:20,510 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:16:20,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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
[2021-11-20 07:16:20,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:16:20,575 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:16:20,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:16:20,654 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-20 07:16:20,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1640760204]
[2021-11-20 07:16:20,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1640760204] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-20 07:16:20,655 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-20 07:16:20,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3
[2021-11-20 07:16:20,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547976511]
[2021-11-20 07:16:20,655 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-20 07:16:20,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-20 07:16:20,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-20 07:16:20,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-20 07:16:20,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-11-20 07:16:20,656 INFO L87 Difference]: Start difference. First operand 2652 states and 3139 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:16:31,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:16:31,492 INFO L93 Difference]: Finished difference Result 3607 states and 4030 transitions.
[2021-11-20 07:16:31,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-11-20 07:16:31,493 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8
[2021-11-20 07:16:31,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:16:31,509 INFO L225 Difference]: With dead ends: 3607
[2021-11-20 07:16:31,509 INFO L226 Difference]: Without dead ends: 3607
[2021-11-20 07:16:31,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-11-20 07:16:31,511 INFO L933 BasicCegarLoop]: 2677 mSDtfsCounter, 1441 mSDsluCounter, 2352 mSDsCounter, 0 mSdLazyCounter, 2776 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1447 SdHoareTripleChecker+Valid, 5029 SdHoareTripleChecker+Invalid, 2803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time
[2021-11-20 07:16:31,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1447 Valid, 5029 Invalid, 2803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2776 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time]
[2021-11-20 07:16:31,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3607 states.
[2021-11-20 07:16:31,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3607 to 2644.
[2021-11-20 07:16:31,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2644 states, 1576 states have (on average 1.958756345177665) internal successors, (3087), 2628 states have internal predecessors, (3087), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16)
[2021-11-20 07:16:31,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2644 states to 2644 states and 3119 transitions.
[2021-11-20 07:16:31,583 INFO L78 Accepts]: Start accepts. Automaton has 2644 states and 3119 transitions. Word has length 8
[2021-11-20 07:16:31,583 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:16:31,583 INFO L470 AbstractCegarLoop]: Abstraction has 2644 states and 3119 transitions.
[2021-11-20 07:16:31,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:16:31,584 INFO L276 IsEmpty]: Start isEmpty. Operand 2644 states and 3119 transitions.
[2021-11-20 07:16:31,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2021-11-20 07:16:31,585 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:16:31,585 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:16:31,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0
[2021-11-20 07:16:31,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3
[2021-11-20 07:16:31,805 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr658REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] ===
[2021-11-20 07:16:31,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:16:31,806 INFO L85 PathProgramCache]: Analyzing trace with hash -690352907, now seen corresponding path program 1 times
[2021-11-20 07:16:31,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-20 07:16:31,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1537723153]
[2021-11-20 07:16:31,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:16:31,807 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-20 07:16:31,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat
[2021-11-20 07:16:31,809 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-20 07:16:31,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process
[2021-11-20 07:16:32,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 07:16:32,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 2 conjunts are in the unsatisfiable core
[2021-11-20 07:16:32,020 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:16:32,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:16:32,051 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:16:32,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:16:32,076 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-20 07:16:32,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1537723153]
[2021-11-20 07:16:32,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1537723153] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-20 07:16:32,077 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-20 07:16:32,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4
[2021-11-20 07:16:32,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928360031]
[2021-11-20 07:16:32,077 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-20 07:16:32,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-20 07:16:32,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-20 07:16:32,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-20 07:16:32,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-11-20 07:16:32,079 INFO L87 Difference]: Start difference. First operand 2644 states and 3119 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:16:32,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:16:32,164 INFO L93 Difference]: Finished difference Result 2602 states and 3076 transitions.
[2021-11-20 07:16:32,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-11-20 07:16:32,165 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11
[2021-11-20 07:16:32,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:16:32,180 INFO L225 Difference]: With dead ends: 2602
[2021-11-20 07:16:32,181 INFO L226 Difference]: Without dead ends: 2602
[2021-11-20 07:16:32,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-11-20 07:16:32,182 INFO L933 BasicCegarLoop]: 2396 mSDtfsCounter, 2384 mSDsluCounter, 1210 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2388 SdHoareTripleChecker+Valid, 3606 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2021-11-20 07:16:32,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2388 Valid, 3606 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2021-11-20 07:16:32,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2602 states.
[2021-11-20 07:16:32,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2602 to 2602.
[2021-11-20 07:16:32,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2602 states, 1558 states have (on average 1.9537869062901156) internal successors, (3044), 2586 states have internal predecessors, (3044), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16)
[2021-11-20 07:16:32,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2602 states to 2602 states and 3076 transitions.
[2021-11-20 07:16:32,260 INFO L78 Accepts]: Start accepts. Automaton has 2602 states and 3076 transitions. Word has length 11
[2021-11-20 07:16:32,260 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:16:32,260 INFO L470 AbstractCegarLoop]: Abstraction has 2602 states and 3076 transitions.
[2021-11-20 07:16:32,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:16:32,260 INFO L276 IsEmpty]: Start isEmpty. Operand 2602 states and 3076 transitions.
[2021-11-20 07:16:32,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2021-11-20 07:16:32,261 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:16:32,261 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:16:32,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0
[2021-11-20 07:16:32,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3
[2021-11-20 07:16:32,473 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr682REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] ===
[2021-11-20 07:16:32,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:16:32,474 INFO L85 PathProgramCache]: Analyzing trace with hash -2004126129, now seen corresponding path program 1 times
[2021-11-20 07:16:32,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-20 07:16:32,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1725549521]
[2021-11-20 07:16:32,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:16:32,475 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-20 07:16:32,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat
[2021-11-20 07:16:32,477 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-20 07:16:32,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process
[2021-11-20 07:16:32,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 07:16:32,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core
[2021-11-20 07:16:32,658 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:16:32,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:16:32,692 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:16:32,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:16:32,721 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-20 07:16:32,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1725549521]
[2021-11-20 07:16:32,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1725549521] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-20 07:16:32,721 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-20 07:16:32,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5
[2021-11-20 07:16:32,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711518419]
[2021-11-20 07:16:32,722 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-20 07:16:32,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-11-20 07:16:32,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-20 07:16:32,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-11-20 07:16:32,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2021-11-20 07:16:32,724 INFO L87 Difference]: Start difference. First operand 2602 states and 3076 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:16:32,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:16:32,845 INFO L93 Difference]: Finished difference Result 2581 states and 3048 transitions.
[2021-11-20 07:16:32,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-11-20 07:16:32,846 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13
[2021-11-20 07:16:32,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:16:32,859 INFO L225 Difference]: With dead ends: 2581
[2021-11-20 07:16:32,859 INFO L226 Difference]: Without dead ends: 2581
[2021-11-20 07:16:32,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2021-11-20 07:16:32,860 INFO L933 BasicCegarLoop]: 2351 mSDtfsCounter, 2316 mSDsluCounter, 3554 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2320 SdHoareTripleChecker+Valid, 5905 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2021-11-20 07:16:32,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2320 Valid, 5905 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2021-11-20 07:16:32,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2581 states.
[2021-11-20 07:16:32,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2581 to 2580.
[2021-11-20 07:16:32,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2580 states, 1550 states have (on average 1.9451612903225806) internal successors, (3015), 2564 states have internal predecessors, (3015), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16)
[2021-11-20 07:16:32,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2580 states to 2580 states and 3047 transitions.
[2021-11-20 07:16:32,915 INFO L78 Accepts]: Start accepts. Automaton has 2580 states and 3047 transitions. Word has length 13
[2021-11-20 07:16:32,916 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:16:32,916 INFO L470 AbstractCegarLoop]: Abstraction has 2580 states and 3047 transitions.
[2021-11-20 07:16:32,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:16:32,916 INFO L276 IsEmpty]: Start isEmpty. Operand 2580 states and 3047 transitions.
[2021-11-20 07:16:32,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2021-11-20 07:16:32,917 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:16:32,918 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:16:32,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0
[2021-11-20 07:16:33,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3
[2021-11-20 07:16:33,129 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] ===
[2021-11-20 07:16:33,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:16:33,130 INFO L85 PathProgramCache]: Analyzing trace with hash 445820063, now seen corresponding path program 1 times
[2021-11-20 07:16:33,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-20 07:16:33,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1522972815]
[2021-11-20 07:16:33,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:16:33,132 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-20 07:16:33,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat
[2021-11-20 07:16:33,134 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-20 07:16:33,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process
[2021-11-20 07:16:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 07:16:33,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core
[2021-11-20 07:16:33,343 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:16:33,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:16:33,391 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:16:33,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:16:33,437 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-20 07:16:33,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1522972815]
[2021-11-20 07:16:33,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1522972815] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-20 07:16:33,437 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-20 07:16:33,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4
[2021-11-20 07:16:33,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895264262]
[2021-11-20 07:16:33,439 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-20 07:16:33,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-20 07:16:33,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-20 07:16:33,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-20 07:16:33,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-11-20 07:16:33,441 INFO L87 Difference]: Start difference. First operand 2580 states and 3047 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:16:33,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:16:33,537 INFO L93 Difference]: Finished difference Result 4234 states and 4857 transitions.
[2021-11-20 07:16:33,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-11-20 07:16:33,537 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20
[2021-11-20 07:16:33,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:16:33,568 INFO L225 Difference]: With dead ends: 4234
[2021-11-20 07:16:33,568 INFO L226 Difference]: Without dead ends: 4234
[2021-11-20 07:16:33,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-11-20 07:16:33,570 INFO L933 BasicCegarLoop]: 4082 mSDtfsCounter, 2277 mSDsluCounter, 3608 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2287 SdHoareTripleChecker+Valid, 7690 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2021-11-20 07:16:33,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2287 Valid, 7690 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2021-11-20 07:16:33,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4234 states.
[2021-11-20 07:16:33,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4234 to 2538.
[2021-11-20 07:16:33,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2538 states, 1532 states have (on average 1.9399477806788512) internal successors, (2972), 2522 states have internal predecessors, (2972), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16)
[2021-11-20 07:16:33,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2538 states to 2538 states and 3004 transitions.
[2021-11-20 07:16:33,652 INFO L78 Accepts]: Start accepts. Automaton has 2538 states and 3004 transitions. Word has length 20
[2021-11-20 07:16:33,653 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:16:33,653 INFO L470 AbstractCegarLoop]: Abstraction has 2538 states and 3004 transitions.
[2021-11-20 07:16:33,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:16:33,653 INFO L276 IsEmpty]: Start isEmpty. Operand 2538 states and 3004 transitions.
[2021-11-20 07:16:33,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2021-11-20 07:16:33,655 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:16:33,655 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:16:33,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0
[2021-11-20 07:16:33,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3
[2021-11-20 07:16:33,869 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr334REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] ===
[2021-11-20 07:16:33,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:16:33,870 INFO L85 PathProgramCache]: Analyzing trace with hash 591123743, now seen corresponding path program 1 times
[2021-11-20 07:16:33,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-20 07:16:33,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1831480657]
[2021-11-20 07:16:33,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:16:33,870 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-20 07:16:33,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat
[2021-11-20 07:16:33,871 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-20 07:16:33,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process
[2021-11-20 07:16:34,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 07:16:34,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core
[2021-11-20 07:16:34,059 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:16:34,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:16:34,125 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:16:34,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:16:34,163 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-20 07:16:34,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1831480657]
[2021-11-20 07:16:34,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1831480657] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-20 07:16:34,164 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-20 07:16:34,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4
[2021-11-20 07:16:34,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451963483]
[2021-11-20 07:16:34,165 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-20 07:16:34,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-20 07:16:34,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-20 07:16:34,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-20 07:16:34,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-11-20 07:16:34,166 INFO L87 Difference]: Start difference. First operand 2538 states and 3004 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:16:34,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:16:34,270 INFO L93 Difference]: Finished difference Result 4107 states and 4676 transitions.
[2021-11-20 07:16:34,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-11-20 07:16:34,271 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20
[2021-11-20 07:16:34,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:16:34,286 INFO L225 Difference]: With dead ends: 4107
[2021-11-20 07:16:34,286 INFO L226 Difference]: Without dead ends: 4107
[2021-11-20 07:16:34,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-11-20 07:16:34,288 INFO L933 BasicCegarLoop]: 3767 mSDtfsCounter, 4468 mSDsluCounter, 1754 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4478 SdHoareTripleChecker+Valid, 5521 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2021-11-20 07:16:34,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4478 Valid, 5521 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2021-11-20 07:16:34,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4107 states.
[2021-11-20 07:16:34,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4107 to 2460.
[2021-11-20 07:16:34,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2460 states, 1478 states have (on average 1.9235453315290933) internal successors, (2843), 2444 states have internal predecessors, (2843), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16)
[2021-11-20 07:16:34,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2460 states to 2460 states and 2875 transitions.
[2021-11-20 07:16:34,351 INFO L78 Accepts]: Start accepts. Automaton has 2460 states and 2875 transitions. Word has length 20
[2021-11-20 07:16:34,351 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:16:34,351 INFO L470 AbstractCegarLoop]: Abstraction has 2460 states and 2875 transitions.
[2021-11-20 07:16:34,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:16:34,352 INFO L276 IsEmpty]: Start isEmpty. Operand 2460 states and 2875 transitions.
[2021-11-20 07:16:34,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2021-11-20 07:16:34,354 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:16:34,354 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:16:34,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0
[2021-11-20 07:16:34,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3
[2021-11-20 07:16:34,572 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] ===
[2021-11-20 07:16:34,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:16:34,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1063651591, now seen corresponding path program 1 times
[2021-11-20 07:16:34,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-20 07:16:34,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [671796646]
[2021-11-20 07:16:34,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:16:34,574 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-20 07:16:34,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat
[2021-11-20 07:16:34,576 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-20 07:16:34,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process
[2021-11-20 07:16:34,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 07:16:34,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core
[2021-11-20 07:16:34,843 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:16:34,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:16:34,896 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:16:34,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:16:34,939 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-20 07:16:34,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [671796646]
[2021-11-20 07:16:34,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [671796646] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-20 07:16:34,940 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-20 07:16:34,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5
[2021-11-20 07:16:34,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899289982]
[2021-11-20 07:16:34,940 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-20 07:16:34,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-11-20 07:16:34,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-20 07:16:34,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-11-20 07:16:34,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2021-11-20 07:16:34,942 INFO L87 Difference]: Start difference. First operand 2460 states and 2875 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:16:35,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:16:35,099 INFO L93 Difference]: Finished difference Result 4093 states and 4657 transitions.
[2021-11-20 07:16:35,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-11-20 07:16:35,100 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22
[2021-11-20 07:16:35,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:16:35,114 INFO L225 Difference]: With dead ends: 4093
[2021-11-20 07:16:35,114 INFO L226 Difference]: Without dead ends: 4093
[2021-11-20 07:16:35,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2021-11-20 07:16:35,115 INFO L933 BasicCegarLoop]: 3728 mSDtfsCounter, 4400 mSDsluCounter, 5482 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4410 SdHoareTripleChecker+Valid, 9210 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2021-11-20 07:16:35,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4410 Valid, 9210 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2021-11-20 07:16:35,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4093 states.
[2021-11-20 07:16:35,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4093 to 2438.
[2021-11-20 07:16:35,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2438 states, 1470 states have (on average 1.9142857142857144) internal successors, (2814), 2422 states have internal predecessors, (2814), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16)
[2021-11-20 07:16:35,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2438 states to 2438 states and 2846 transitions.
[2021-11-20 07:16:35,174 INFO L78 Accepts]: Start accepts. Automaton has 2438 states and 2846 transitions. Word has length 22
[2021-11-20 07:16:35,174 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:16:35,174 INFO L470 AbstractCegarLoop]: Abstraction has 2438 states and 2846 transitions.
[2021-11-20 07:16:35,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:16:35,175 INFO L276 IsEmpty]: Start isEmpty. Operand 2438 states and 2846 transitions.
[2021-11-20 07:16:35,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2021-11-20 07:16:35,176 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:16:35,176 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:16:35,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0
[2021-11-20 07:16:35,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3
[2021-11-20 07:16:35,388 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr359REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] ===
[2021-11-20 07:16:35,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:16:35,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1134259450, now seen corresponding path program 1 times
[2021-11-20 07:16:35,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-20 07:16:35,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1730952915]
[2021-11-20 07:16:35,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:16:35,390 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-20 07:16:35,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat
[2021-11-20 07:16:35,391 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-20 07:16:35,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process
[2021-11-20 07:16:35,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 07:16:35,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core
[2021-11-20 07:16:35,639 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:16:35,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:16:35,701 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:16:35,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:16:35,765 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-20 07:16:35,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1730952915]
[2021-11-20 07:16:35,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1730952915] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-20 07:16:35,765 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-20 07:16:35,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5
[2021-11-20 07:16:35,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436686283]
[2021-11-20 07:16:35,766 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-20 07:16:35,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-11-20 07:16:35,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-20 07:16:35,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-11-20 07:16:35,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2021-11-20 07:16:35,770 INFO L87 Difference]: Start difference. First operand 2438 states and 2846 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:16:35,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:16:35,910 INFO L93 Difference]: Finished difference Result 4028 states and 4534 transitions.
[2021-11-20 07:16:35,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-11-20 07:16:35,911 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22
[2021-11-20 07:16:35,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:16:35,929 INFO L225 Difference]: With dead ends: 4028
[2021-11-20 07:16:35,929 INFO L226 Difference]: Without dead ends: 4028
[2021-11-20 07:16:35,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2021-11-20 07:16:35,961 INFO L933 BasicCegarLoop]: 3874 mSDtfsCounter, 2170 mSDsluCounter, 7305 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2180 SdHoareTripleChecker+Valid, 11179 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2021-11-20 07:16:35,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2180 Valid, 11179 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2021-11-20 07:16:35,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4028 states.
[2021-11-20 07:16:36,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4028 to 2400.
[2021-11-20 07:16:36,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2400 states, 1446 states have (on average 1.8858921161825726) internal successors, (2727), 2384 states have internal predecessors, (2727), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16)
[2021-11-20 07:16:36,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2400 states to 2400 states and 2759 transitions.
[2021-11-20 07:16:36,044 INFO L78 Accepts]: Start accepts. Automaton has 2400 states and 2759 transitions. Word has length 22
[2021-11-20 07:16:36,045 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:16:36,045 INFO L470 AbstractCegarLoop]: Abstraction has 2400 states and 2759 transitions.
[2021-11-20 07:16:36,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:16:36,046 INFO L276 IsEmpty]: Start isEmpty. Operand 2400 states and 2759 transitions.
[2021-11-20 07:16:36,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2021-11-20 07:16:36,048 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:16:36,049 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:16:36,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0
[2021-11-20 07:16:36,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3
[2021-11-20 07:16:36,249 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr696REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] ===
[2021-11-20 07:16:36,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:16:36,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1056519613, now seen corresponding path program 1 times
[2021-11-20 07:16:36,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-20 07:16:36,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1243228155]
[2021-11-20 07:16:36,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:16:36,251 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-20 07:16:36,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat
[2021-11-20 07:16:36,252 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-20 07:16:36,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process
[2021-11-20 07:16:36,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 07:16:36,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core
[2021-11-20 07:16:36,432 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:16:36,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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
[2021-11-20 07:16:36,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:16:36,550 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:16:36,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:16:36,654 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-20 07:16:36,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1243228155]
[2021-11-20 07:16:36,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1243228155] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-20 07:16:36,654 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-20 07:16:36,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3
[2021-11-20 07:16:36,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926292310]
[2021-11-20 07:16:36,654 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-20 07:16:36,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-20 07:16:36,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-20 07:16:36,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-20 07:16:36,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-11-20 07:16:36,655 INFO L87 Difference]: Start difference. First operand 2400 states and 2759 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:16:41,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:16:41,149 INFO L93 Difference]: Finished difference Result 3021 states and 3299 transitions.
[2021-11-20 07:16:41,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-11-20 07:16:41,150 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27
[2021-11-20 07:16:41,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:16:41,157 INFO L225 Difference]: With dead ends: 3021
[2021-11-20 07:16:41,158 INFO L226 Difference]: Without dead ends: 3021
[2021-11-20 07:16:41,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-11-20 07:16:41,159 INFO L933 BasicCegarLoop]: 1514 mSDtfsCounter, 3081 mSDsluCounter, 1277 mSDsCounter, 0 mSdLazyCounter, 2065 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3087 SdHoareTripleChecker+Valid, 2791 SdHoareTripleChecker+Invalid, 2086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time
[2021-11-20 07:16:41,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3087 Valid, 2791 Invalid, 2086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2065 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time]
[2021-11-20 07:16:41,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3021 states.
[2021-11-20 07:16:41,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3021 to 2396.
[2021-11-20 07:16:41,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2396 states, 1446 states have (on average 1.8831258644536653) internal successors, (2723), 2380 states have internal predecessors, (2723), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16)
[2021-11-20 07:16:41,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2396 states to 2396 states and 2755 transitions.
[2021-11-20 07:16:41,202 INFO L78 Accepts]: Start accepts. Automaton has 2396 states and 2755 transitions. Word has length 27
[2021-11-20 07:16:41,202 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:16:41,202 INFO L470 AbstractCegarLoop]: Abstraction has 2396 states and 2755 transitions.
[2021-11-20 07:16:41,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:16:41,203 INFO L276 IsEmpty]: Start isEmpty. Operand 2396 states and 2755 transitions.
[2021-11-20 07:16:41,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2021-11-20 07:16:41,203 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:16:41,204 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:16:41,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0
[2021-11-20 07:16:41,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3
[2021-11-20 07:16:41,415 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr697REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] ===
[2021-11-20 07:16:41,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:16:41,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1056519614, now seen corresponding path program 1 times
[2021-11-20 07:16:41,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-20 07:16:41,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [217891944]
[2021-11-20 07:16:41,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:16:41,416 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-20 07:16:41,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat
[2021-11-20 07:16:41,417 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-20 07:16:41,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process
[2021-11-20 07:16:41,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 07:16:41,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core
[2021-11-20 07:16:41,613 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:16:41,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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
[2021-11-20 07:16:41,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:16:41,852 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:16:42,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:16:42,302 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-20 07:16:42,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [217891944]
[2021-11-20 07:16:42,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [217891944] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-20 07:16:42,303 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-20 07:16:42,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5
[2021-11-20 07:16:42,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116388362]
[2021-11-20 07:16:42,303 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-20 07:16:42,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2021-11-20 07:16:42,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-20 07:16:42,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-11-20 07:16:42,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2021-11-20 07:16:42,305 INFO L87 Difference]: Start difference. First operand 2396 states and 2755 transitions. Second operand has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:16:54,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:16:54,459 INFO L93 Difference]: Finished difference Result 3571 states and 3924 transitions.
[2021-11-20 07:16:54,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2021-11-20 07:16:54,460 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27
[2021-11-20 07:16:54,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:16:54,468 INFO L225 Difference]: With dead ends: 3571
[2021-11-20 07:16:54,468 INFO L226 Difference]: Without dead ends: 3571
[2021-11-20 07:16:54,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2021-11-20 07:16:54,469 INFO L933 BasicCegarLoop]: 1575 mSDtfsCounter, 6054 mSDsluCounter, 2766 mSDsCounter, 0 mSdLazyCounter, 3237 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6054 SdHoareTripleChecker+Valid, 4341 SdHoareTripleChecker+Invalid, 3266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 3237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time
[2021-11-20 07:16:54,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6054 Valid, 4341 Invalid, 3266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 3237 Invalid, 0 Unknown, 0 Unchecked, 12.0s Time]
[2021-11-20 07:16:54,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3571 states.
[2021-11-20 07:16:54,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3571 to 2429.
[2021-11-20 07:16:54,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2429 states, 1480 states have (on average 1.864864864864865) internal successors, (2760), 2413 states have internal predecessors, (2760), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16)
[2021-11-20 07:16:54,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2429 states to 2429 states and 2792 transitions.
[2021-11-20 07:16:54,509 INFO L78 Accepts]: Start accepts. Automaton has 2429 states and 2792 transitions. Word has length 27
[2021-11-20 07:16:54,509 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:16:54,509 INFO L470 AbstractCegarLoop]: Abstraction has 2429 states and 2792 transitions.
[2021-11-20 07:16:54,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:16:54,509 INFO L276 IsEmpty]: Start isEmpty. Operand 2429 states and 2792 transitions.
[2021-11-20 07:16:54,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-11-20 07:16:54,510 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:16:54,511 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:16:54,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0
[2021-11-20 07:16:54,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3
[2021-11-20 07:16:54,722 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] ===
[2021-11-20 07:16:54,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:16:54,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1781128551, now seen corresponding path program 1 times
[2021-11-20 07:16:54,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-20 07:16:54,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2056969769]
[2021-11-20 07:16:54,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:16:54,723 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-20 07:16:54,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat
[2021-11-20 07:16:54,724 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-20 07:16:54,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process
[2021-11-20 07:16:54,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 07:16:54,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core
[2021-11-20 07:16:54,965 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:16:54,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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
[2021-11-20 07:16:55,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:16:55,111 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:16:55,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:16:55,220 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-20 07:16:55,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2056969769]
[2021-11-20 07:16:55,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2056969769] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-20 07:16:55,221 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-20 07:16:55,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3
[2021-11-20 07:16:55,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110791059]
[2021-11-20 07:16:55,221 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-20 07:16:55,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-20 07:16:55,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-20 07:16:55,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-20 07:16:55,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-11-20 07:16:55,222 INFO L87 Difference]: Start difference. First operand 2429 states and 2792 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:17:01,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:17:01,372 INFO L93 Difference]: Finished difference Result 4682 states and 5248 transitions.
[2021-11-20 07:17:01,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-11-20 07:17:01,372 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-11-20 07:17:01,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:17:01,381 INFO L225 Difference]: With dead ends: 4682
[2021-11-20 07:17:01,381 INFO L226 Difference]: Without dead ends: 4682
[2021-11-20 07:17:01,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-11-20 07:17:01,382 INFO L933 BasicCegarLoop]: 2684 mSDtfsCounter, 4263 mSDsluCounter, 2372 mSDsCounter, 0 mSdLazyCounter, 3162 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4270 SdHoareTripleChecker+Valid, 5056 SdHoareTripleChecker+Invalid, 3205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 3162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time
[2021-11-20 07:17:01,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4270 Valid, 5056 Invalid, 3205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 3162 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time]
[2021-11-20 07:17:01,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4682 states.
[2021-11-20 07:17:01,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4682 to 2425.
[2021-11-20 07:17:01,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2425 states, 1480 states have (on average 1.8621621621621622) internal successors, (2756), 2409 states have internal predecessors, (2756), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16)
[2021-11-20 07:17:01,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2425 states to 2425 states and 2788 transitions.
[2021-11-20 07:17:01,426 INFO L78 Accepts]: Start accepts. Automaton has 2425 states and 2788 transitions. Word has length 36
[2021-11-20 07:17:01,426 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:17:01,426 INFO L470 AbstractCegarLoop]: Abstraction has 2425 states and 2788 transitions.
[2021-11-20 07:17:01,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:17:01,427 INFO L276 IsEmpty]: Start isEmpty. Operand 2425 states and 2788 transitions.
[2021-11-20 07:17:01,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-11-20 07:17:01,427 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:17:01,428 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:17:01,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0
[2021-11-20 07:17:01,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3
[2021-11-20 07:17:01,639 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] ===
[2021-11-20 07:17:01,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:17:01,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1781128552, now seen corresponding path program 1 times
[2021-11-20 07:17:01,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-20 07:17:01,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [435255314]
[2021-11-20 07:17:01,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:17:01,641 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-20 07:17:01,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat
[2021-11-20 07:17:01,642 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-20 07:17:01,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process
[2021-11-20 07:17:01,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 07:17:01,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core
[2021-11-20 07:17:01,895 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:17:01,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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
[2021-11-20 07:17:02,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:17:02,177 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:17:02,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:17:02,646 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-20 07:17:02,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [435255314]
[2021-11-20 07:17:02,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [435255314] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-20 07:17:02,646 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-20 07:17:02,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5
[2021-11-20 07:17:02,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163135733]
[2021-11-20 07:17:02,647 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-20 07:17:02,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2021-11-20 07:17:02,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-20 07:17:02,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-11-20 07:17:02,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2021-11-20 07:17:02,648 INFO L87 Difference]: Start difference. First operand 2425 states and 2788 transitions. Second operand has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:17:21,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:17:21,168 INFO L93 Difference]: Finished difference Result 4594 states and 5036 transitions.
[2021-11-20 07:17:21,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2021-11-20 07:17:21,169 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-11-20 07:17:21,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:17:21,178 INFO L225 Difference]: With dead ends: 4594
[2021-11-20 07:17:21,178 INFO L226 Difference]: Without dead ends: 4594
[2021-11-20 07:17:21,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2021-11-20 07:17:21,179 INFO L933 BasicCegarLoop]: 3274 mSDtfsCounter, 4252 mSDsluCounter, 4202 mSDsCounter, 0 mSdLazyCounter, 4879 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4257 SdHoareTripleChecker+Valid, 7476 SdHoareTripleChecker+Invalid, 4908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 4879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.3s IncrementalHoareTripleChecker+Time
[2021-11-20 07:17:21,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4257 Valid, 7476 Invalid, 4908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 4879 Invalid, 0 Unknown, 0 Unchecked, 18.3s Time]
[2021-11-20 07:17:21,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4594 states.
[2021-11-20 07:17:21,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4594 to 2421.
[2021-11-20 07:17:21,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2421 states, 1480 states have (on average 1.8594594594594596) internal successors, (2752), 2405 states have internal predecessors, (2752), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16)
[2021-11-20 07:17:21,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2421 states to 2421 states and 2784 transitions.
[2021-11-20 07:17:21,246 INFO L78 Accepts]: Start accepts. Automaton has 2421 states and 2784 transitions. Word has length 36
[2021-11-20 07:17:21,247 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:17:21,247 INFO L470 AbstractCegarLoop]: Abstraction has 2421 states and 2784 transitions.
[2021-11-20 07:17:21,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:17:21,247 INFO L276 IsEmpty]: Start isEmpty. Operand 2421 states and 2784 transitions.
[2021-11-20 07:17:21,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-11-20 07:17:21,248 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:17:21,248 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:17:21,262 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0
[2021-11-20 07:17:21,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3
[2021-11-20 07:17:21,462 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr372REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] ===
[2021-11-20 07:17:21,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:17:21,462 INFO L85 PathProgramCache]: Analyzing trace with hash -526454297, now seen corresponding path program 1 times
[2021-11-20 07:17:21,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-20 07:17:21,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [570860130]
[2021-11-20 07:17:21,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:17:21,463 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-20 07:17:21,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat
[2021-11-20 07:17:21,464 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-20 07:17:21,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process
[2021-11-20 07:17:21,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 07:17:21,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core
[2021-11-20 07:17:21,667 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:17:21,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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
[2021-11-20 07:17:21,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:17:21,788 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:17:21,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:17:21,903 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-20 07:17:21,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [570860130]
[2021-11-20 07:17:21,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [570860130] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-20 07:17:21,903 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-20 07:17:21,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3
[2021-11-20 07:17:21,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140669559]
[2021-11-20 07:17:21,903 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-20 07:17:21,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-20 07:17:21,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-20 07:17:21,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-20 07:17:21,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-11-20 07:17:21,905 INFO L87 Difference]: Start difference. First operand 2421 states and 2784 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:17:28,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:17:28,748 INFO L93 Difference]: Finished difference Result 5038 states and 5620 transitions.
[2021-11-20 07:17:28,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-11-20 07:17:28,749 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-11-20 07:17:28,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:17:28,755 INFO L225 Difference]: With dead ends: 5038
[2021-11-20 07:17:28,755 INFO L226 Difference]: Without dead ends: 5038
[2021-11-20 07:17:28,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-11-20 07:17:28,756 INFO L933 BasicCegarLoop]: 2521 mSDtfsCounter, 4829 mSDsluCounter, 2561 mSDsCounter, 0 mSdLazyCounter, 3342 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4839 SdHoareTripleChecker+Valid, 5082 SdHoareTripleChecker+Invalid, 3393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 3342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time
[2021-11-20 07:17:28,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4839 Valid, 5082 Invalid, 3393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 3342 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time]
[2021-11-20 07:17:28,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5038 states.
[2021-11-20 07:17:28,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5038 to 2418.
[2021-11-20 07:17:28,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2418 states, 1480 states have (on average 1.852027027027027) internal successors, (2741), 2402 states have internal predecessors, (2741), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16)
[2021-11-20 07:17:28,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2418 states to 2418 states and 2773 transitions.
[2021-11-20 07:17:28,803 INFO L78 Accepts]: Start accepts. Automaton has 2418 states and 2773 transitions. Word has length 36
[2021-11-20 07:17:28,803 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:17:28,803 INFO L470 AbstractCegarLoop]: Abstraction has 2418 states and 2773 transitions.
[2021-11-20 07:17:28,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:17:28,804 INFO L276 IsEmpty]: Start isEmpty. Operand 2418 states and 2773 transitions.
[2021-11-20 07:17:28,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-11-20 07:17:28,804 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:17:28,804 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:17:28,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0
[2021-11-20 07:17:29,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3
[2021-11-20 07:17:29,018 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr373REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] ===
[2021-11-20 07:17:29,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:17:29,019 INFO L85 PathProgramCache]: Analyzing trace with hash -526454296, now seen corresponding path program 1 times
[2021-11-20 07:17:29,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-20 07:17:29,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1582566600]
[2021-11-20 07:17:29,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:17:29,020 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-20 07:17:29,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat
[2021-11-20 07:17:29,021 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-20 07:17:29,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process
[2021-11-20 07:17:29,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 07:17:29,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core
[2021-11-20 07:17:29,224 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:17:29,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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
[2021-11-20 07:17:29,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:17:29,477 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:17:29,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:17:29,897 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-20 07:17:29,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1582566600]
[2021-11-20 07:17:29,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1582566600] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-20 07:17:29,897 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-20 07:17:29,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5
[2021-11-20 07:17:29,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954426101]
[2021-11-20 07:17:29,898 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-20 07:17:29,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2021-11-20 07:17:29,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-20 07:17:29,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-11-20 07:17:29,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2021-11-20 07:17:29,898 INFO L87 Difference]: Start difference. First operand 2418 states and 2773 transitions. Second operand has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:17:52,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:17:52,877 INFO L93 Difference]: Finished difference Result 5170 states and 5700 transitions.
[2021-11-20 07:17:52,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2021-11-20 07:17:52,878 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-11-20 07:17:52,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:17:52,884 INFO L225 Difference]: With dead ends: 5170
[2021-11-20 07:17:52,912 INFO L226 Difference]: Without dead ends: 5170
[2021-11-20 07:17:52,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2021-11-20 07:17:52,915 INFO L933 BasicCegarLoop]: 2791 mSDtfsCounter, 5159 mSDsluCounter, 4960 mSDsCounter, 0 mSdLazyCounter, 5140 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5164 SdHoareTripleChecker+Valid, 7751 SdHoareTripleChecker+Invalid, 5169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 5140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.8s IncrementalHoareTripleChecker+Time
[2021-11-20 07:17:52,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5164 Valid, 7751 Invalid, 5169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 5140 Invalid, 0 Unknown, 0 Unchecked, 22.8s Time]
[2021-11-20 07:17:52,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5170 states.
[2021-11-20 07:17:52,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5170 to 2418.
[2021-11-20 07:17:52,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2418 states, 1480 states have (on average 1.8493243243243243) internal successors, (2737), 2402 states have internal predecessors, (2737), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16)
[2021-11-20 07:17:52,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2418 states to 2418 states and 2769 transitions.
[2021-11-20 07:17:52,980 INFO L78 Accepts]: Start accepts. Automaton has 2418 states and 2769 transitions. Word has length 36
[2021-11-20 07:17:52,980 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:17:52,981 INFO L470 AbstractCegarLoop]: Abstraction has 2418 states and 2769 transitions.
[2021-11-20 07:17:52,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:17:52,981 INFO L276 IsEmpty]: Start isEmpty. Operand 2418 states and 2769 transitions.
[2021-11-20 07:17:52,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41
[2021-11-20 07:17:52,982 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:17:52,982 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:17:52,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0
[2021-11-20 07:17:53,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3
[2021-11-20 07:17:53,197 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr704REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] ===
[2021-11-20 07:17:53,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:17:53,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1782356879, now seen corresponding path program 1 times
[2021-11-20 07:17:53,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-20 07:17:53,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [412572502]
[2021-11-20 07:17:53,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:17:53,199 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-20 07:17:53,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat
[2021-11-20 07:17:53,200 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-20 07:17:53,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process
[2021-11-20 07:17:53,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 07:17:53,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core
[2021-11-20 07:17:53,373 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:17:53,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:17:53,468 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:17:53,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:17:53,563 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-20 07:17:53,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [412572502]
[2021-11-20 07:17:53,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [412572502] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-20 07:17:53,563 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-20 07:17:53,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4
[2021-11-20 07:17:53,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517467581]
[2021-11-20 07:17:53,564 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-20 07:17:53,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-20 07:17:53,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-20 07:17:53,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-20 07:17:53,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-11-20 07:17:53,565 INFO L87 Difference]: Start difference. First operand 2418 states and 2769 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:17:53,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:17:53,617 INFO L93 Difference]: Finished difference Result 2412 states and 2755 transitions.
[2021-11-20 07:17:53,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-11-20 07:17:53,617 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40
[2021-11-20 07:17:53,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:17:53,620 INFO L225 Difference]: With dead ends: 2412
[2021-11-20 07:17:53,620 INFO L226 Difference]: Without dead ends: 2412
[2021-11-20 07:17:53,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-11-20 07:17:53,622 INFO L933 BasicCegarLoop]: 2181 mSDtfsCounter, 1145 mSDsluCounter, 3204 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 5385 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2021-11-20 07:17:53,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1149 Valid, 5385 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2021-11-20 07:17:53,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2412 states.
[2021-11-20 07:17:53,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2412 to 2412.
[2021-11-20 07:17:53,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2412 states, 1474 states have (on average 1.8473541383989145) internal successors, (2723), 2396 states have internal predecessors, (2723), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16)
[2021-11-20 07:17:53,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 2755 transitions.
[2021-11-20 07:17:53,661 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 2755 transitions. Word has length 40
[2021-11-20 07:17:53,661 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:17:53,662 INFO L470 AbstractCegarLoop]: Abstraction has 2412 states and 2755 transitions.
[2021-11-20 07:17:53,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:17:53,662 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 2755 transitions.
[2021-11-20 07:17:53,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49
[2021-11-20 07:17:53,663 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:17:53,663 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:17:53,675 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0
[2021-11-20 07:17:53,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3
[2021-11-20 07:17:53,876 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr704REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] ===
[2021-11-20 07:17:53,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:17:53,876 INFO L85 PathProgramCache]: Analyzing trace with hash -263031357, now seen corresponding path program 1 times
[2021-11-20 07:17:53,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-20 07:17:53,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [39720922]
[2021-11-20 07:17:53,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:17:53,877 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-20 07:17:53,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat
[2021-11-20 07:17:53,878 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-20 07:17:53,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process
[2021-11-20 07:17:54,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 07:17:54,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjunts are in the unsatisfiable core
[2021-11-20 07:17:54,089 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:17:54,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:17:54,393 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:17:54,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:17:54,719 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-20 07:17:54,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [39720922]
[2021-11-20 07:17:54,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [39720922] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-20 07:17:54,720 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-20 07:17:54,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3
[2021-11-20 07:17:54,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051752125]
[2021-11-20 07:17:54,720 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-20 07:17:54,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-20 07:17:54,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-20 07:17:54,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-20 07:17:54,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-20 07:17:54,722 INFO L87 Difference]: Start difference. First operand 2412 states and 2755 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:17:55,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:17:55,048 INFO L93 Difference]: Finished difference Result 3930 states and 4407 transitions.
[2021-11-20 07:17:55,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-11-20 07:17:55,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48
[2021-11-20 07:17:55,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:17:55,055 INFO L225 Difference]: With dead ends: 3930
[2021-11-20 07:17:55,055 INFO L226 Difference]: Without dead ends: 3930
[2021-11-20 07:17:55,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-20 07:17:55,056 INFO L933 BasicCegarLoop]: 2269 mSDtfsCounter, 1564 mSDsluCounter, 2027 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1573 SdHoareTripleChecker+Valid, 4296 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2021-11-20 07:17:55,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1573 Valid, 4296 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2021-11-20 07:17:55,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3930 states.
[2021-11-20 07:17:55,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3930 to 3131.
[2021-11-20 07:17:55,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3131 states, 2189 states have (on average 1.814070351758794) internal successors, (3971), 3108 states have internal predecessors, (3971), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23)
[2021-11-20 07:17:55,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3131 states to 3131 states and 4017 transitions.
[2021-11-20 07:17:55,112 INFO L78 Accepts]: Start accepts. Automaton has 3131 states and 4017 transitions. Word has length 48
[2021-11-20 07:17:55,112 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:17:55,113 INFO L470 AbstractCegarLoop]: Abstraction has 3131 states and 4017 transitions.
[2021-11-20 07:17:55,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:17:55,113 INFO L276 IsEmpty]: Start isEmpty. Operand 3131 states and 4017 transitions.
[2021-11-20 07:17:55,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2021-11-20 07:17:55,114 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:17:55,114 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:17:55,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0
[2021-11-20 07:17:55,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3
[2021-11-20 07:17:55,326 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr437REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] ===
[2021-11-20 07:17:55,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:17:55,327 INFO L85 PathProgramCache]: Analyzing trace with hash -435335443, now seen corresponding path program 1 times
[2021-11-20 07:17:55,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-20 07:17:55,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1858741650]
[2021-11-20 07:17:55,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:17:55,327 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-20 07:17:55,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat
[2021-11-20 07:17:55,329 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-20 07:17:55,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process
[2021-11-20 07:17:55,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 07:17:55,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjunts are in the unsatisfiable core
[2021-11-20 07:17:55,617 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:17:55,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:17:55,715 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:17:55,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:17:55,814 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-20 07:17:55,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1858741650]
[2021-11-20 07:17:55,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1858741650] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-20 07:17:55,814 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-20 07:17:55,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4
[2021-11-20 07:17:55,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314185779]
[2021-11-20 07:17:55,814 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-20 07:17:55,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-20 07:17:55,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-20 07:17:55,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-20 07:17:55,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-11-20 07:17:55,816 INFO L87 Difference]: Start difference. First operand 3131 states and 4017 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:17:55,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:17:55,887 INFO L93 Difference]: Finished difference Result 4459 states and 5419 transitions.
[2021-11-20 07:17:55,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-11-20 07:17:55,888 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51
[2021-11-20 07:17:55,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:17:55,892 INFO L225 Difference]: With dead ends: 4459
[2021-11-20 07:17:55,893 INFO L226 Difference]: Without dead ends: 4459
[2021-11-20 07:17:55,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-11-20 07:17:55,894 INFO L933 BasicCegarLoop]: 3642 mSDtfsCounter, 2139 mSDsluCounter, 5125 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2149 SdHoareTripleChecker+Valid, 8767 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2021-11-20 07:17:55,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2149 Valid, 8767 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2021-11-20 07:17:55,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4459 states.
[2021-11-20 07:17:55,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4459 to 3107.
[2021-11-20 07:17:55,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3107 states, 2165 states have (on average 1.8157043879907622) internal successors, (3931), 3084 states have internal predecessors, (3931), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23)
[2021-11-20 07:17:55,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3107 states to 3107 states and 3977 transitions.
[2021-11-20 07:17:55,952 INFO L78 Accepts]: Start accepts. Automaton has 3107 states and 3977 transitions. Word has length 51
[2021-11-20 07:17:55,952 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:17:55,952 INFO L470 AbstractCegarLoop]: Abstraction has 3107 states and 3977 transitions.
[2021-11-20 07:17:55,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:17:55,953 INFO L276 IsEmpty]: Start isEmpty. Operand 3107 states and 3977 transitions.
[2021-11-20 07:17:55,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2021-11-20 07:17:55,954 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:17:55,954 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:17:55,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0
[2021-11-20 07:17:56,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3
[2021-11-20 07:17:56,168 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] ===
[2021-11-20 07:17:56,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:17:56,168 INFO L85 PathProgramCache]: Analyzing trace with hash -273786554, now seen corresponding path program 1 times
[2021-11-20 07:17:56,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-20 07:17:56,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1963728433]
[2021-11-20 07:17:56,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:17:56,169 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-20 07:17:56,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat
[2021-11-20 07:17:56,170 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-20 07:17:56,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process
[2021-11-20 07:17:56,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 07:17:56,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 3 conjunts are in the unsatisfiable core
[2021-11-20 07:17:56,408 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:17:56,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:17:56,536 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:17:56,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:17:56,666 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-20 07:17:56,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1963728433]
[2021-11-20 07:17:56,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1963728433] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-20 07:17:56,667 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-20 07:17:56,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4
[2021-11-20 07:17:56,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276826761]
[2021-11-20 07:17:56,667 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-20 07:17:56,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-20 07:17:56,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-20 07:17:56,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-20 07:17:56,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-11-20 07:17:56,669 INFO L87 Difference]: Start difference. First operand 3107 states and 3977 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:17:56,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:17:56,759 INFO L93 Difference]: Finished difference Result 4204 states and 4917 transitions.
[2021-11-20 07:17:56,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-11-20 07:17:56,760 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54
[2021-11-20 07:17:56,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:17:56,764 INFO L225 Difference]: With dead ends: 4204
[2021-11-20 07:17:56,764 INFO L226 Difference]: Without dead ends: 4204
[2021-11-20 07:17:56,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-11-20 07:17:56,765 INFO L933 BasicCegarLoop]: 3683 mSDtfsCounter, 2130 mSDsluCounter, 5216 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2140 SdHoareTripleChecker+Valid, 8899 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2021-11-20 07:17:56,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2140 Valid, 8899 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2021-11-20 07:17:56,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4204 states.
[2021-11-20 07:17:56,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4204 to 3095.
[2021-11-20 07:17:56,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3095 states, 2153 states have (on average 1.8165350673478866) internal successors, (3911), 3072 states have internal predecessors, (3911), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23)
[2021-11-20 07:17:56,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3095 states to 3095 states and 3957 transitions.
[2021-11-20 07:17:56,808 INFO L78 Accepts]: Start accepts. Automaton has 3095 states and 3957 transitions. Word has length 54
[2021-11-20 07:17:56,809 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:17:56,809 INFO L470 AbstractCegarLoop]: Abstraction has 3095 states and 3957 transitions.
[2021-11-20 07:17:56,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:17:56,809 INFO L276 IsEmpty]: Start isEmpty. Operand 3095 states and 3957 transitions.
[2021-11-20 07:17:56,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58
[2021-11-20 07:17:56,810 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:17:56,810 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:17:56,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0
[2021-11-20 07:17:57,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3
[2021-11-20 07:17:57,023 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] ===
[2021-11-20 07:17:57,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:17:57,024 INFO L85 PathProgramCache]: Analyzing trace with hash -345082942, now seen corresponding path program 1 times
[2021-11-20 07:17:57,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-20 07:17:57,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [263864391]
[2021-11-20 07:17:57,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:17:57,024 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-20 07:17:57,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat
[2021-11-20 07:17:57,026 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-20 07:17:57,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process
[2021-11-20 07:17:57,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 07:17:57,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core
[2021-11-20 07:17:57,256 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:17:57,266 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-11-20 07:17:57,266 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-11-20 07:17:57,267 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-11-20 07:17:57,328 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size
[2021-11-20 07:17:57,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36
[2021-11-20 07:17:57,390 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size
[2021-11-20 07:17:57,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23
[2021-11-20 07:17:57,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:17:57,491 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:17:57,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:17:57,628 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-20 07:17:57,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [263864391]
[2021-11-20 07:17:57,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [263864391] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-20 07:17:57,628 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-20 07:17:57,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6
[2021-11-20 07:17:57,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724240825]
[2021-11-20 07:17:57,629 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-20 07:17:57,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2021-11-20 07:17:57,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-20 07:17:57,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-11-20 07:17:57,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2021-11-20 07:17:57,631 INFO L87 Difference]: Start difference. First operand 3095 states and 3957 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:18:01,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:18:01,078 INFO L93 Difference]: Finished difference Result 3323 states and 4196 transitions.
[2021-11-20 07:18:01,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-11-20 07:18:01,080 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57
[2021-11-20 07:18:01,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:18:01,083 INFO L225 Difference]: With dead ends: 3323
[2021-11-20 07:18:01,083 INFO L226 Difference]: Without dead ends: 3323
[2021-11-20 07:18:01,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2021-11-20 07:18:01,084 INFO L933 BasicCegarLoop]: 2062 mSDtfsCounter, 1027 mSDsluCounter, 5179 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1031 SdHoareTripleChecker+Valid, 7241 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time
[2021-11-20 07:18:01,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1031 Valid, 7241 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time]
[2021-11-20 07:18:01,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3323 states.
[2021-11-20 07:18:01,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3323 to 3061.
[2021-11-20 07:18:01,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3061 states, 2119 states have (on average 1.8291647003303444) internal successors, (3876), 3038 states have internal predecessors, (3876), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23)
[2021-11-20 07:18:01,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3061 states to 3061 states and 3922 transitions.
[2021-11-20 07:18:01,127 INFO L78 Accepts]: Start accepts. Automaton has 3061 states and 3922 transitions. Word has length 57
[2021-11-20 07:18:01,127 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:18:01,128 INFO L470 AbstractCegarLoop]: Abstraction has 3061 states and 3922 transitions.
[2021-11-20 07:18:01,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:18:01,128 INFO L276 IsEmpty]: Start isEmpty. Operand 3061 states and 3922 transitions.
[2021-11-20 07:18:01,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60
[2021-11-20 07:18:01,129 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:18:01,129 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:18:01,160 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0
[2021-11-20 07:18:01,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3
[2021-11-20 07:18:01,362 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr437REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] ===
[2021-11-20 07:18:01,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:18:01,363 INFO L85 PathProgramCache]: Analyzing trace with hash 122106401, now seen corresponding path program 1 times
[2021-11-20 07:18:01,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-20 07:18:01,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [187200462]
[2021-11-20 07:18:01,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:18:01,364 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-20 07:18:01,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat
[2021-11-20 07:18:01,365 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-20 07:18:01,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process
[2021-11-20 07:18:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 07:18:01,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 3 conjunts are in the unsatisfiable core
[2021-11-20 07:18:01,677 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:18:02,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:18:02,139 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:18:02,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:18:02,591 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-20 07:18:02,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [187200462]
[2021-11-20 07:18:02,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [187200462] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-20 07:18:02,592 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-20 07:18:02,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3
[2021-11-20 07:18:02,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341340553]
[2021-11-20 07:18:02,592 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-20 07:18:02,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-20 07:18:02,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-20 07:18:02,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-20 07:18:02,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-20 07:18:02,594 INFO L87 Difference]: Start difference. First operand 3061 states and 3922 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:18:02,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:18:02,790 INFO L93 Difference]: Finished difference Result 4503 states and 5557 transitions.
[2021-11-20 07:18:02,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-11-20 07:18:02,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59
[2021-11-20 07:18:02,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:18:02,800 INFO L225 Difference]: With dead ends: 4503
[2021-11-20 07:18:02,800 INFO L226 Difference]: Without dead ends: 4503
[2021-11-20 07:18:02,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-20 07:18:02,801 INFO L933 BasicCegarLoop]: 2803 mSDtfsCounter, 1262 mSDsluCounter, 2057 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1270 SdHoareTripleChecker+Valid, 4860 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2021-11-20 07:18:02,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1270 Valid, 4860 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2021-11-20 07:18:02,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4503 states.
[2021-11-20 07:18:02,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4503 to 3784.
[2021-11-20 07:18:02,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3784 states, 2838 states have (on average 1.7924594785059902) internal successors, (5087), 3754 states have internal predecessors, (5087), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30)
[2021-11-20 07:18:02,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3784 states to 3784 states and 5147 transitions.
[2021-11-20 07:18:02,884 INFO L78 Accepts]: Start accepts. Automaton has 3784 states and 5147 transitions. Word has length 59
[2021-11-20 07:18:02,884 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:18:02,885 INFO L470 AbstractCegarLoop]: Abstraction has 3784 states and 5147 transitions.
[2021-11-20 07:18:02,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:18:02,885 INFO L276 IsEmpty]: Start isEmpty. Operand 3784 states and 5147 transitions.
[2021-11-20 07:18:02,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63
[2021-11-20 07:18:02,886 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:18:02,886 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:18:02,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0
[2021-11-20 07:18:03,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3
[2021-11-20 07:18:03,107 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] ===
[2021-11-20 07:18:03,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:18:03,107 INFO L85 PathProgramCache]: Analyzing trace with hash -45497454, now seen corresponding path program 1 times
[2021-11-20 07:18:03,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-20 07:18:03,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2072377056]
[2021-11-20 07:18:03,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:18:03,109 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-20 07:18:03,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat
[2021-11-20 07:18:03,110 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-20 07:18:03,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process
[2021-11-20 07:18:03,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 07:18:03,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 6 conjunts are in the unsatisfiable core
[2021-11-20 07:18:03,651 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:18:03,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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
[2021-11-20 07:18:03,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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
[2021-11-20 07:18:04,470 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size
[2021-11-20 07:18:04,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29
[2021-11-20 07:18:04,475 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-11-20 07:18:04,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22
[2021-11-20 07:18:04,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:18:04,511 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:18:09,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:18:09,635 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-20 07:18:09,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2072377056]
[2021-11-20 07:18:09,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2072377056] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-20 07:18:09,635 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-20 07:18:09,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5
[2021-11-20 07:18:09,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857648282]
[2021-11-20 07:18:09,636 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-20 07:18:09,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2021-11-20 07:18:09,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-20 07:18:09,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-11-20 07:18:09,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30
[2021-11-20 07:18:09,637 INFO L87 Difference]: Start difference. First operand 3784 states and 5147 transitions. Second operand has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:18:19,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:18:19,514 INFO L93 Difference]: Finished difference Result 5542 states and 7453 transitions.
[2021-11-20 07:18:19,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-11-20 07:18:19,515 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62
[2021-11-20 07:18:19,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:18:19,525 INFO L225 Difference]: With dead ends: 5542
[2021-11-20 07:18:19,525 INFO L226 Difference]: Without dead ends: 5542
[2021-11-20 07:18:19,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30
[2021-11-20 07:18:19,526 INFO L933 BasicCegarLoop]: 2391 mSDtfsCounter, 2433 mSDsluCounter, 2725 mSDsCounter, 0 mSdLazyCounter, 1638 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2441 SdHoareTripleChecker+Valid, 5116 SdHoareTripleChecker+Invalid, 4471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2792 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time
[2021-11-20 07:18:19,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2441 Valid, 5116 Invalid, 4471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1638 Invalid, 0 Unknown, 2792 Unchecked, 9.8s Time]
[2021-11-20 07:18:19,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5542 states.
[2021-11-20 07:18:19,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5542 to 3754.
[2021-11-20 07:18:19,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3754 states, 2840 states have (on average 1.7693661971830985) internal successors, (5025), 3724 states have internal predecessors, (5025), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30)
[2021-11-20 07:18:19,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3754 states to 3754 states and 5085 transitions.
[2021-11-20 07:18:19,608 INFO L78 Accepts]: Start accepts. Automaton has 3754 states and 5085 transitions. Word has length 62
[2021-11-20 07:18:19,609 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:18:19,609 INFO L470 AbstractCegarLoop]: Abstraction has 3754 states and 5085 transitions.
[2021-11-20 07:18:19,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:18:19,609 INFO L276 IsEmpty]: Start isEmpty. Operand 3754 states and 5085 transitions.
[2021-11-20 07:18:19,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63
[2021-11-20 07:18:19,609 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:18:19,610 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:18:19,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0
[2021-11-20 07:18:19,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3
[2021-11-20 07:18:19,824 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr391REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] ===
[2021-11-20 07:18:19,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:18:19,825 INFO L85 PathProgramCache]: Analyzing trace with hash -272070766, now seen corresponding path program 1 times
[2021-11-20 07:18:19,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-20 07:18:19,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1346960321]
[2021-11-20 07:18:19,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:18:19,826 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-20 07:18:19,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat
[2021-11-20 07:18:19,827 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-20 07:18:19,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process
[2021-11-20 07:18:20,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 07:18:20,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 6 conjunts are in the unsatisfiable core
[2021-11-20 07:18:20,186 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:18:20,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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
[2021-11-20 07:18:20,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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
[2021-11-20 07:18:20,932 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size
[2021-11-20 07:18:20,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 26
[2021-11-20 07:18:20,946 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-11-20 07:18:20,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19
[2021-11-20 07:18:20,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:18:20,975 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:18:25,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:18:25,673 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-20 07:18:25,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1346960321]
[2021-11-20 07:18:25,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1346960321] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-20 07:18:25,673 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-20 07:18:25,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5
[2021-11-20 07:18:25,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424200308]
[2021-11-20 07:18:25,673 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-20 07:18:25,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2021-11-20 07:18:25,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-20 07:18:25,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-11-20 07:18:25,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30
[2021-11-20 07:18:25,674 INFO L87 Difference]: Start difference. First operand 3754 states and 5085 transitions. Second operand has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:18:32,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:18:32,556 INFO L93 Difference]: Finished difference Result 3808 states and 5065 transitions.
[2021-11-20 07:18:32,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-11-20 07:18:32,557 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62
[2021-11-20 07:18:32,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:18:32,563 INFO L225 Difference]: With dead ends: 3808
[2021-11-20 07:18:32,563 INFO L226 Difference]: Without dead ends: 3808
[2021-11-20 07:18:32,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30
[2021-11-20 07:18:32,564 INFO L933 BasicCegarLoop]: 1614 mSDtfsCounter, 1407 mSDsluCounter, 1968 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1414 SdHoareTripleChecker+Valid, 3582 SdHoareTripleChecker+Invalid, 2620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1531 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time
[2021-11-20 07:18:32,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1414 Valid, 3582 Invalid, 2620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1052 Invalid, 0 Unknown, 1531 Unchecked, 6.8s Time]
[2021-11-20 07:18:32,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3808 states.
[2021-11-20 07:18:32,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3808 to 3770.
[2021-11-20 07:18:32,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3770 states, 2887 states have (on average 1.7322480083131278) internal successors, (5001), 3740 states have internal predecessors, (5001), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30)
[2021-11-20 07:18:32,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3770 states to 3770 states and 5061 transitions.
[2021-11-20 07:18:32,624 INFO L78 Accepts]: Start accepts. Automaton has 3770 states and 5061 transitions. Word has length 62
[2021-11-20 07:18:32,624 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:18:32,624 INFO L470 AbstractCegarLoop]: Abstraction has 3770 states and 5061 transitions.
[2021-11-20 07:18:32,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:18:32,625 INFO L276 IsEmpty]: Start isEmpty. Operand 3770 states and 5061 transitions.
[2021-11-20 07:18:32,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65
[2021-11-20 07:18:32,626 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:18:32,626 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:18:32,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0
[2021-11-20 07:18:32,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3
[2021-11-20 07:18:32,843 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr75REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] ===
[2021-11-20 07:18:32,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:18:32,843 INFO L85 PathProgramCache]: Analyzing trace with hash -773371597, now seen corresponding path program 1 times
[2021-11-20 07:18:32,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-20 07:18:32,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1747229961]
[2021-11-20 07:18:32,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:18:32,844 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-20 07:18:32,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat
[2021-11-20 07:18:32,846 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-20 07:18:32,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process
[2021-11-20 07:18:33,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 07:18:33,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 3 conjunts are in the unsatisfiable core
[2021-11-20 07:18:33,187 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:18:33,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:18:33,477 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:18:33,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6
[2021-11-20 07:18:33,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:18:33,920 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-20 07:18:33,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1747229961]
[2021-11-20 07:18:33,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1747229961] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-20 07:18:33,920 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-20 07:18:33,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5
[2021-11-20 07:18:33,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781138916]
[2021-11-20 07:18:33,921 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-20 07:18:33,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2021-11-20 07:18:33,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-20 07:18:33,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-11-20 07:18:33,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30
[2021-11-20 07:18:33,923 INFO L87 Difference]: Start difference. First operand 3770 states and 5061 transitions. Second operand has 6 states, 5 states have (on average 24.8) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:18:37,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:18:37,345 INFO L93 Difference]: Finished difference Result 3768 states and 5057 transitions.
[2021-11-20 07:18:37,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-11-20 07:18:37,346 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.8) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64
[2021-11-20 07:18:37,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:18:37,354 INFO L225 Difference]: With dead ends: 3768
[2021-11-20 07:18:37,354 INFO L226 Difference]: Without dead ends: 3768
[2021-11-20 07:18:37,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30
[2021-11-20 07:18:37,355 INFO L933 BasicCegarLoop]: 1362 mSDtfsCounter, 6498 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6508 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time
[2021-11-20 07:18:37,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6508 Valid, 1801 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time]
[2021-11-20 07:18:37,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3768 states.
[2021-11-20 07:18:37,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3768 to 3768.
[2021-11-20 07:18:37,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3768 states, 2887 states have (on average 1.7308624870107379) internal successors, (4997), 3738 states have internal predecessors, (4997), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30)
[2021-11-20 07:18:37,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3768 states to 3768 states and 5057 transitions.
[2021-11-20 07:18:37,431 INFO L78 Accepts]: Start accepts. Automaton has 3768 states and 5057 transitions. Word has length 64
[2021-11-20 07:18:37,432 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:18:37,432 INFO L470 AbstractCegarLoop]: Abstraction has 3768 states and 5057 transitions.
[2021-11-20 07:18:37,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.8) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:18:37,432 INFO L276 IsEmpty]: Start isEmpty. Operand 3768 states and 5057 transitions.
[2021-11-20 07:18:37,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65
[2021-11-20 07:18:37,457 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:18:37,458 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:18:37,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0
[2021-11-20 07:18:37,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3
[2021-11-20 07:18:37,668 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr393REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] ===
[2021-11-20 07:18:37,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:18:37,669 INFO L85 PathProgramCache]: Analyzing trace with hash 533035699, now seen corresponding path program 1 times
[2021-11-20 07:18:37,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-20 07:18:37,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1300206616]
[2021-11-20 07:18:37,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:18:37,670 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-20 07:18:37,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat
[2021-11-20 07:18:37,670 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-20 07:18:37,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process
[2021-11-20 07:18:37,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 07:18:37,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 3 conjunts are in the unsatisfiable core
[2021-11-20 07:18:37,911 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:18:38,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:18:38,165 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:18:38,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6
[2021-11-20 07:18:38,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:18:38,614 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-20 07:18:38,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1300206616]
[2021-11-20 07:18:38,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1300206616] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-20 07:18:38,614 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-20 07:18:38,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5
[2021-11-20 07:18:38,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015308724]
[2021-11-20 07:18:38,615 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-20 07:18:38,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2021-11-20 07:18:38,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-20 07:18:38,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-11-20 07:18:38,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30
[2021-11-20 07:18:38,616 INFO L87 Difference]: Start difference. First operand 3768 states and 5057 transitions. Second operand has 6 states, 5 states have (on average 24.8) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:18:44,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:18:44,595 INFO L93 Difference]: Finished difference Result 3767 states and 5043 transitions.
[2021-11-20 07:18:44,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-11-20 07:18:44,596 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.8) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64
[2021-11-20 07:18:44,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:18:44,619 INFO L225 Difference]: With dead ends: 3767
[2021-11-20 07:18:44,619 INFO L226 Difference]: Without dead ends: 3767
[2021-11-20 07:18:44,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30
[2021-11-20 07:18:44,620 INFO L933 BasicCegarLoop]: 1456 mSDtfsCounter, 1673 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1683 SdHoareTripleChecker+Valid, 3052 SdHoareTripleChecker+Invalid, 1416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time
[2021-11-20 07:18:44,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1683 Valid, 3052 Invalid, 1416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1398 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time]
[2021-11-20 07:18:44,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3767 states.
[2021-11-20 07:18:44,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3767 to 3715.
[2021-11-20 07:18:44,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3715 states, 2840 states have (on average 1.7376760563380282) internal successors, (4935), 3685 states have internal predecessors, (4935), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30)
[2021-11-20 07:18:44,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3715 states to 3715 states and 4995 transitions.
[2021-11-20 07:18:44,664 INFO L78 Accepts]: Start accepts. Automaton has 3715 states and 4995 transitions. Word has length 64
[2021-11-20 07:18:44,665 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:18:44,665 INFO L470 AbstractCegarLoop]: Abstraction has 3715 states and 4995 transitions.
[2021-11-20 07:18:44,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.8) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:18:44,665 INFO L276 IsEmpty]: Start isEmpty. Operand 3715 states and 4995 transitions.
[2021-11-20 07:18:44,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2021-11-20 07:18:44,666 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:18:44,666 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:18:44,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0
[2021-11-20 07:18:44,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3
[2021-11-20 07:18:44,866 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] ===
[2021-11-20 07:18:44,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:18:44,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1308391416, now seen corresponding path program 1 times
[2021-11-20 07:18:44,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-20 07:18:44,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [943130848]
[2021-11-20 07:18:44,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:18:44,868 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-20 07:18:44,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat
[2021-11-20 07:18:44,869 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-20 07:18:44,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process
[2021-11-20 07:18:45,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 07:18:45,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 4 conjunts are in the unsatisfiable core
[2021-11-20 07:18:45,116 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:18:45,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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
[2021-11-20 07:18:45,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18
[2021-11-20 07:18:45,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13
[2021-11-20 07:18:45,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:18:45,302 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:18:45,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:18:45,450 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-20 07:18:45,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [943130848]
[2021-11-20 07:18:45,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [943130848] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-20 07:18:45,451 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-20 07:18:45,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4
[2021-11-20 07:18:45,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414998470]
[2021-11-20 07:18:45,451 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-20 07:18:45,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-11-20 07:18:45,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-20 07:18:45,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-11-20 07:18:45,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2021-11-20 07:18:45,452 INFO L87 Difference]: Start difference. First operand 3715 states and 4995 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:18:52,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:18:52,222 INFO L93 Difference]: Finished difference Result 3714 states and 4993 transitions.
[2021-11-20 07:18:52,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2021-11-20 07:18:52,223 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67
[2021-11-20 07:18:52,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:18:52,227 INFO L225 Difference]: With dead ends: 3714
[2021-11-20 07:18:52,227 INFO L226 Difference]: Without dead ends: 3714
[2021-11-20 07:18:52,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2021-11-20 07:18:52,228 INFO L933 BasicCegarLoop]: 2113 mSDtfsCounter, 4 mSDsluCounter, 3448 mSDsCounter, 0 mSdLazyCounter, 2896 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5561 SdHoareTripleChecker+Invalid, 2897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time
[2021-11-20 07:18:52,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 5561 Invalid, 2897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2896 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time]
[2021-11-20 07:18:52,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3714 states.
[2021-11-20 07:18:52,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3714 to 3714.
[2021-11-20 07:18:52,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3714 states, 2840 states have (on average 1.7369718309859155) internal successors, (4933), 3684 states have internal predecessors, (4933), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30)
[2021-11-20 07:18:52,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3714 states to 3714 states and 4993 transitions.
[2021-11-20 07:18:52,264 INFO L78 Accepts]: Start accepts. Automaton has 3714 states and 4993 transitions. Word has length 67
[2021-11-20 07:18:52,264 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:18:52,265 INFO L470 AbstractCegarLoop]: Abstraction has 3714 states and 4993 transitions.
[2021-11-20 07:18:52,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:18:52,265 INFO L276 IsEmpty]: Start isEmpty. Operand 3714 states and 4993 transitions.
[2021-11-20 07:18:52,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2021-11-20 07:18:52,265 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:18:52,266 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:18:52,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0
[2021-11-20 07:18:52,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3
[2021-11-20 07:18:52,466 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] ===
[2021-11-20 07:18:52,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:18:52,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1308391415, now seen corresponding path program 1 times
[2021-11-20 07:18:52,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-20 07:18:52,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [978939336]
[2021-11-20 07:18:52,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:18:52,467 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-20 07:18:52,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat
[2021-11-20 07:18:52,468 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-20 07:18:52,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process
[2021-11-20 07:18:52,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 07:18:52,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-11-20 07:18:52,814 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:18:52,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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
[2021-11-20 07:18:52,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9
[2021-11-20 07:18:52,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15
[2021-11-20 07:18:53,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27
[2021-11-20 07:18:53,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12
[2021-11-20 07:18:53,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:18:53,051 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:18:53,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:18:53,356 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-20 07:18:53,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [978939336]
[2021-11-20 07:18:53,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [978939336] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-20 07:18:53,356 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-20 07:18:53,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7
[2021-11-20 07:18:53,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266161191]
[2021-11-20 07:18:53,356 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-20 07:18:53,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2021-11-20 07:18:53,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-20 07:18:53,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2021-11-20 07:18:53,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2021-11-20 07:18:53,357 INFO L87 Difference]: Start difference. First operand 3714 states and 4993 transitions. Second operand has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:19:15,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:19:15,867 INFO L93 Difference]: Finished difference Result 3713 states and 4991 transitions.
[2021-11-20 07:19:15,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2021-11-20 07:19:15,868 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67
[2021-11-20 07:19:15,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:19:15,874 INFO L225 Difference]: With dead ends: 3713
[2021-11-20 07:19:15,874 INFO L226 Difference]: Without dead ends: 3713
[2021-11-20 07:19:15,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90
[2021-11-20 07:19:15,875 INFO L933 BasicCegarLoop]: 2113 mSDtfsCounter, 3 mSDsluCounter, 5779 mSDsCounter, 0 mSdLazyCounter, 4791 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 7892 SdHoareTripleChecker+Invalid, 4792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.3s IncrementalHoareTripleChecker+Time
[2021-11-20 07:19:15,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 7892 Invalid, 4792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4791 Invalid, 0 Unknown, 0 Unchecked, 22.3s Time]
[2021-11-20 07:19:15,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3713 states.
[2021-11-20 07:19:15,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3713 to 3713.
[2021-11-20 07:19:15,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3713 states, 2838 states have (on average 1.7374911909795632) internal successors, (4931), 3683 states have internal predecessors, (4931), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30)
[2021-11-20 07:19:15,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3713 states to 3713 states and 4991 transitions.
[2021-11-20 07:19:15,921 INFO L78 Accepts]: Start accepts. Automaton has 3713 states and 4991 transitions. Word has length 67
[2021-11-20 07:19:15,921 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:19:15,921 INFO L470 AbstractCegarLoop]: Abstraction has 3713 states and 4991 transitions.
[2021-11-20 07:19:15,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:19:15,922 INFO L276 IsEmpty]: Start isEmpty. Operand 3713 states and 4991 transitions.
[2021-11-20 07:19:15,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2021-11-20 07:19:15,923 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:19:15,923 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:19:15,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0
[2021-11-20 07:19:16,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3
[2021-11-20 07:19:16,139 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr396REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] ===
[2021-11-20 07:19:16,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:19:16,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1173564532, now seen corresponding path program 1 times
[2021-11-20 07:19:16,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-20 07:19:16,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1331077415]
[2021-11-20 07:19:16,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:19:16,140 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-20 07:19:16,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat
[2021-11-20 07:19:16,141 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-20 07:19:16,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process
[2021-11-20 07:19:16,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 07:19:16,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 4 conjunts are in the unsatisfiable core
[2021-11-20 07:19:16,401 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:19:16,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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
[2021-11-20 07:19:16,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18
[2021-11-20 07:19:16,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13
[2021-11-20 07:19:16,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:19:16,562 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:19:16,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:19:16,691 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-20 07:19:16,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1331077415]
[2021-11-20 07:19:16,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1331077415] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-20 07:19:16,691 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-20 07:19:16,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4
[2021-11-20 07:19:16,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632183850]
[2021-11-20 07:19:16,692 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-20 07:19:16,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-11-20 07:19:16,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-20 07:19:16,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-11-20 07:19:16,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2021-11-20 07:19:16,693 INFO L87 Difference]: Start difference. First operand 3713 states and 4991 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:19:23,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:19:23,461 INFO L93 Difference]: Finished difference Result 3712 states and 4988 transitions.
[2021-11-20 07:19:23,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2021-11-20 07:19:23,462 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67
[2021-11-20 07:19:23,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:19:23,468 INFO L225 Difference]: With dead ends: 3712
[2021-11-20 07:19:23,468 INFO L226 Difference]: Without dead ends: 3712
[2021-11-20 07:19:23,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 127 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2021-11-20 07:19:23,469 INFO L933 BasicCegarLoop]: 2111 mSDtfsCounter, 4 mSDsluCounter, 3445 mSDsCounter, 0 mSdLazyCounter, 2893 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5556 SdHoareTripleChecker+Invalid, 2894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time
[2021-11-20 07:19:23,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 5556 Invalid, 2894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2893 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time]
[2021-11-20 07:19:23,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3712 states.
[2021-11-20 07:19:23,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3712 to 3712.
[2021-11-20 07:19:23,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3712 states, 2838 states have (on average 1.7364341085271318) internal successors, (4928), 3682 states have internal predecessors, (4928), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30)
[2021-11-20 07:19:23,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3712 states to 3712 states and 4988 transitions.
[2021-11-20 07:19:23,533 INFO L78 Accepts]: Start accepts. Automaton has 3712 states and 4988 transitions. Word has length 67
[2021-11-20 07:19:23,533 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:19:23,534 INFO L470 AbstractCegarLoop]: Abstraction has 3712 states and 4988 transitions.
[2021-11-20 07:19:23,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:19:23,534 INFO L276 IsEmpty]: Start isEmpty. Operand 3712 states and 4988 transitions.
[2021-11-20 07:19:23,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2021-11-20 07:19:23,535 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:19:23,535 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:19:23,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0
[2021-11-20 07:19:23,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3
[2021-11-20 07:19:23,752 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr397REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] ===
[2021-11-20 07:19:23,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:19:23,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1173564533, now seen corresponding path program 1 times
[2021-11-20 07:19:23,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-20 07:19:23,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [226371101]
[2021-11-20 07:19:23,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:19:23,753 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-20 07:19:23,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat
[2021-11-20 07:19:23,755 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-20 07:19:23,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process
[2021-11-20 07:19:24,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 07:19:24,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-11-20 07:19:24,120 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:19:24,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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
[2021-11-20 07:19:24,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9
[2021-11-20 07:19:24,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15
[2021-11-20 07:19:24,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27
[2021-11-20 07:19:24,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12
[2021-11-20 07:19:24,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:19:24,345 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:19:24,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:19:24,660 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-20 07:19:24,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [226371101]
[2021-11-20 07:19:24,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [226371101] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-20 07:19:24,660 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-20 07:19:24,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7
[2021-11-20 07:19:24,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703378342]
[2021-11-20 07:19:24,660 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-20 07:19:24,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2021-11-20 07:19:24,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-20 07:19:24,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2021-11-20 07:19:24,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2021-11-20 07:19:24,661 INFO L87 Difference]: Start difference. First operand 3712 states and 4988 transitions. Second operand has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:19:42,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:19:42,787 INFO L93 Difference]: Finished difference Result 3711 states and 4985 transitions.
[2021-11-20 07:19:42,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2021-11-20 07:19:42,788 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67
[2021-11-20 07:19:42,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:19:42,795 INFO L225 Difference]: With dead ends: 3711
[2021-11-20 07:19:42,795 INFO L226 Difference]: Without dead ends: 3711
[2021-11-20 07:19:42,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90
[2021-11-20 07:19:42,797 INFO L933 BasicCegarLoop]: 2111 mSDtfsCounter, 4 mSDsluCounter, 3456 mSDsCounter, 0 mSdLazyCounter, 2880 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5567 SdHoareTripleChecker+Invalid, 2882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time
[2021-11-20 07:19:42,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 5567 Invalid, 2882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2880 Invalid, 0 Unknown, 0 Unchecked, 18.0s Time]
[2021-11-20 07:19:42,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3711 states.
[2021-11-20 07:19:42,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3711 to 3711.
[2021-11-20 07:19:42,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3711 states, 2835 states have (on average 1.7372134038800706) internal successors, (4925), 3681 states have internal predecessors, (4925), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30)
[2021-11-20 07:19:42,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3711 states to 3711 states and 4985 transitions.
[2021-11-20 07:19:42,857 INFO L78 Accepts]: Start accepts. Automaton has 3711 states and 4985 transitions. Word has length 67
[2021-11-20 07:19:42,857 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:19:42,857 INFO L470 AbstractCegarLoop]: Abstraction has 3711 states and 4985 transitions.
[2021-11-20 07:19:42,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 07:19:42,858 INFO L276 IsEmpty]: Start isEmpty. Operand 3711 states and 4985 transitions.
[2021-11-20 07:19:42,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76
[2021-11-20 07:19:42,859 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:19:42,860 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:19:42,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0
[2021-11-20 07:19:43,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3
[2021-11-20 07:19:43,074 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] ===
[2021-11-20 07:19:43,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:19:43,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1243544783, now seen corresponding path program 1 times
[2021-11-20 07:19:43,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-20 07:19:43,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1069786958]
[2021-11-20 07:19:43,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:19:43,077 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-20 07:19:43,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat
[2021-11-20 07:19:43,078 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-20 07:19:43,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process
[2021-11-20 07:19:43,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 07:19:43,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 3 conjunts are in the unsatisfiable core
[2021-11-20 07:19:43,360 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:19:43,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:19:43,476 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:19:43,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:19:43,628 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-20 07:19:43,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1069786958]
[2021-11-20 07:19:43,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1069786958] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-20 07:19:43,629 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-20 07:19:43,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6
[2021-11-20 07:19:43,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691431802]
[2021-11-20 07:19:43,629 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-20 07:19:43,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2021-11-20 07:19:43,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-20 07:19:43,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-11-20 07:19:43,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2021-11-20 07:19:43,630 INFO L87 Difference]: Start difference. First operand 3711 states and 4985 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2021-11-20 07:19:43,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:19:43,793 INFO L93 Difference]: Finished difference Result 3721 states and 5001 transitions.
[2021-11-20 07:19:43,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2021-11-20 07:19:43,794 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 75
[2021-11-20 07:19:43,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:19:43,803 INFO L225 Difference]: With dead ends: 3721
[2021-11-20 07:19:43,804 INFO L226 Difference]: Without dead ends: 3721
[2021-11-20 07:19:43,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56
[2021-11-20 07:19:43,805 INFO L933 BasicCegarLoop]: 2109 mSDtfsCounter, 9 mSDsluCounter, 4211 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 6320 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2021-11-20 07:19:43,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 6320 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2021-11-20 07:19:43,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3721 states.
[2021-11-20 07:19:43,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3721 to 3721.
[2021-11-20 07:19:43,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3721 states, 2843 states have (on average 1.736545902215969) internal successors, (4937), 3690 states have internal predecessors, (4937), 30 states have call successors, (30), 4 states have call predecessors, (30), 5 states have return successors, (34), 27 states have call predecessors, (34), 30 states have call successors, (34)
[2021-11-20 07:19:43,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3721 states to 3721 states and 5001 transitions.
[2021-11-20 07:19:43,890 INFO L78 Accepts]: Start accepts. Automaton has 3721 states and 5001 transitions. Word has length 75
[2021-11-20 07:19:43,890 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:19:43,890 INFO L470 AbstractCegarLoop]: Abstraction has 3721 states and 5001 transitions.
[2021-11-20 07:19:43,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2021-11-20 07:19:43,891 INFO L276 IsEmpty]: Start isEmpty. Operand 3721 states and 5001 transitions.
[2021-11-20 07:19:43,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78
[2021-11-20 07:19:43,892 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:19:43,892 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:19:43,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0
[2021-11-20 07:19:44,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3
[2021-11-20 07:19:44,107 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] ===
[2021-11-20 07:19:44,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:19:44,108 INFO L85 PathProgramCache]: Analyzing trace with hash 520759535, now seen corresponding path program 1 times
[2021-11-20 07:19:44,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-20 07:19:44,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [687892873]
[2021-11-20 07:19:44,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 07:19:44,109 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-20 07:19:44,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat
[2021-11-20 07:19:44,110 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-20 07:19:44,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process
[2021-11-20 07:19:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 07:19:44,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core
[2021-11-20 07:19:44,413 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:19:44,556 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:19:44,556 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:19:44,807 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:19:44,808 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-20 07:19:44,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [687892873]
[2021-11-20 07:19:44,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [687892873] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-20 07:19:44,808 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-20 07:19:44,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10
[2021-11-20 07:19:44,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018807151]
[2021-11-20 07:19:44,809 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-20 07:19:44,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2021-11-20 07:19:44,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-20 07:19:44,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2021-11-20 07:19:44,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90
[2021-11-20 07:19:44,810 INFO L87 Difference]: Start difference. First operand 3721 states and 5001 transitions. Second operand has 10 states, 10 states have (on average 8.0) internal successors, (80), 10 states have internal predecessors, (80), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2021-11-20 07:19:45,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:19:45,328 INFO L93 Difference]: Finished difference Result 3735 states and 5025 transitions.
[2021-11-20 07:19:45,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2021-11-20 07:19:45,330 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.0) internal successors, (80), 10 states have internal predecessors, (80), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 77
[2021-11-20 07:19:45,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:19:45,340 INFO L225 Difference]: With dead ends: 3735
[2021-11-20 07:19:45,340 INFO L226 Difference]: Without dead ends: 3731
[2021-11-20 07:19:45,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306
[2021-11-20 07:19:45,343 INFO L933 BasicCegarLoop]: 2111 mSDtfsCounter, 34 mSDsluCounter, 6321 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 8432 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2021-11-20 07:19:45,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 8432 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2021-11-20 07:19:45,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3731 states.
[2021-11-20 07:19:45,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3731 to 3727.
[2021-11-20 07:19:45,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3727 states, 2849 states have (on average 1.7356967356967357) internal successors, (4945), 3696 states have internal predecessors, (4945), 30 states have call successors, (30), 4 states have call predecessors, (30), 5 states have return successors, (34), 27 states have call predecessors, (34), 30 states have call successors, (34)
[2021-11-20 07:19:45,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3727 states to 3727 states and 5009 transitions.
[2021-11-20 07:19:45,427 INFO L78 Accepts]: Start accepts. Automaton has 3727 states and 5009 transitions. Word has length 77
[2021-11-20 07:19:45,427 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:19:45,427 INFO L470 AbstractCegarLoop]: Abstraction has 3727 states and 5009 transitions.
[2021-11-20 07:19:45,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.0) internal successors, (80), 10 states have internal predecessors, (80), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2021-11-20 07:19:45,428 INFO L276 IsEmpty]: Start isEmpty. Operand 3727 states and 5009 transitions.
[2021-11-20 07:19:45,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82
[2021-11-20 07:19:45,428 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:19:45,429 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:19:45,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0
[2021-11-20 07:19:45,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3
[2021-11-20 07:19:45,637 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] ===
[2021-11-20 07:19:45,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:19:45,637 INFO L85 PathProgramCache]: Analyzing trace with hash 991095087, now seen corresponding path program 2 times
[2021-11-20 07:19:45,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-20 07:19:45,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1754501005]
[2021-11-20 07:19:45,638 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-11-20 07:19:45,638 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-20 07:19:45,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat
[2021-11-20 07:19:45,638 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-20 07:19:45,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process
[2021-11-20 07:19:46,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-11-20 07:19:46,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-20 07:19:46,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 9 conjunts are in the unsatisfiable core
[2021-11-20 07:19:46,190 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:19:46,397 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:19:46,397 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:19:46,882 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:19:46,882 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-20 07:19:46,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1754501005]
[2021-11-20 07:19:46,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1754501005] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-20 07:19:46,882 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-20 07:19:46,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18
[2021-11-20 07:19:46,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115367629]
[2021-11-20 07:19:46,882 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-20 07:19:46,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2021-11-20 07:19:46,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-20 07:19:46,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2021-11-20 07:19:46,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306
[2021-11-20 07:19:46,883 INFO L87 Difference]: Start difference. First operand 3727 states and 5009 transitions. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2021-11-20 07:19:48,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:19:48,557 INFO L93 Difference]: Finished difference Result 3755 states and 5065 transitions.
[2021-11-20 07:19:48,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states.
[2021-11-20 07:19:48,558 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 81
[2021-11-20 07:19:48,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:19:48,566 INFO L225 Difference]: With dead ends: 3755
[2021-11-20 07:19:48,566 INFO L226 Difference]: Without dead ends: 3751
[2021-11-20 07:19:48,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406
[2021-11-20 07:19:48,568 INFO L933 BasicCegarLoop]: 2115 mSDtfsCounter, 92 mSDsluCounter, 14773 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 16888 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2021-11-20 07:19:48,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 16888 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2021-11-20 07:19:48,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3751 states.
[2021-11-20 07:19:48,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3751 to 3739.
[2021-11-20 07:19:48,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3739 states, 2861 states have (on average 1.7340090877315624) internal successors, (4961), 3708 states have internal predecessors, (4961), 30 states have call successors, (30), 4 states have call predecessors, (30), 5 states have return successors, (34), 27 states have call predecessors, (34), 30 states have call successors, (34)
[2021-11-20 07:19:48,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3739 states to 3739 states and 5025 transitions.
[2021-11-20 07:19:48,622 INFO L78 Accepts]: Start accepts. Automaton has 3739 states and 5025 transitions. Word has length 81
[2021-11-20 07:19:48,622 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:19:48,622 INFO L470 AbstractCegarLoop]: Abstraction has 3739 states and 5025 transitions.
[2021-11-20 07:19:48,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2021-11-20 07:19:48,623 INFO L276 IsEmpty]: Start isEmpty. Operand 3739 states and 5025 transitions.
[2021-11-20 07:19:48,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90
[2021-11-20 07:19:48,624 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:19:48,624 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:19:48,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0
[2021-11-20 07:19:48,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3
[2021-11-20 07:19:48,838 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] ===
[2021-11-20 07:19:48,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:19:48,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1599731281, now seen corresponding path program 3 times
[2021-11-20 07:19:48,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-20 07:19:48,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1281606525]
[2021-11-20 07:19:48,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2021-11-20 07:19:48,839 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-20 07:19:48,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat
[2021-11-20 07:19:48,840 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-20 07:19:48,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process
[2021-11-20 07:19:49,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s)
[2021-11-20 07:19:49,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-20 07:19:49,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 18 conjunts are in the unsatisfiable core
[2021-11-20 07:19:49,740 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:19:50,229 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:19:50,229 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:19:51,971 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:19:51,972 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-20 07:19:51,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1281606525]
[2021-11-20 07:19:51,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1281606525] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-20 07:19:51,972 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-20 07:19:51,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34
[2021-11-20 07:19:51,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99365964]
[2021-11-20 07:19:51,973 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-20 07:19:51,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states
[2021-11-20 07:19:51,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-20 07:19:51,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants.
[2021-11-20 07:19:51,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122
[2021-11-20 07:19:51,974 INFO L87 Difference]: Start difference. First operand 3739 states and 5025 transitions. Second operand has 34 states, 34 states have (on average 3.0588235294117645) internal successors, (104), 34 states have internal predecessors, (104), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2021-11-20 07:20:01,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:20:01,904 INFO L93 Difference]: Finished difference Result 3795 states and 5176 transitions.
[2021-11-20 07:20:01,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states.
[2021-11-20 07:20:01,905 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0588235294117645) internal successors, (104), 34 states have internal predecessors, (104), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 89
[2021-11-20 07:20:01,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:20:01,911 INFO L225 Difference]: With dead ends: 3795
[2021-11-20 07:20:01,911 INFO L226 Difference]: Without dead ends: 3789
[2021-11-20 07:20:01,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=1377, Invalid=2783, Unknown=0, NotChecked=0, Total=4160
[2021-11-20 07:20:01,914 INFO L933 BasicCegarLoop]: 2121 mSDtfsCounter, 233 mSDsluCounter, 31738 mSDsCounter, 0 mSdLazyCounter, 1586 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 33859 SdHoareTripleChecker+Invalid, 1803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 1586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time
[2021-11-20 07:20:01,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 33859 Invalid, 1803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 1586 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time]
[2021-11-20 07:20:01,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3789 states.
[2021-11-20 07:20:01,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3789 to 3763.
[2021-11-20 07:20:01,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3763 states, 2885 states have (on average 1.7303292894280762) internal successors, (4992), 3732 states have internal predecessors, (4992), 30 states have call successors, (30), 4 states have call predecessors, (30), 5 states have return successors, (34), 27 states have call predecessors, (34), 30 states have call successors, (34)
[2021-11-20 07:20:01,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3763 states to 3763 states and 5056 transitions.
[2021-11-20 07:20:01,980 INFO L78 Accepts]: Start accepts. Automaton has 3763 states and 5056 transitions. Word has length 89
[2021-11-20 07:20:01,980 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:20:01,980 INFO L470 AbstractCegarLoop]: Abstraction has 3763 states and 5056 transitions.
[2021-11-20 07:20:01,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0588235294117645) internal successors, (104), 34 states have internal predecessors, (104), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2021-11-20 07:20:01,981 INFO L276 IsEmpty]: Start isEmpty. Operand 3763 states and 5056 transitions.
[2021-11-20 07:20:01,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106
[2021-11-20 07:20:01,982 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:20:01,982 INFO L514 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:20:02,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0
[2021-11-20 07:20:02,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3
[2021-11-20 07:20:02,196 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] ===
[2021-11-20 07:20:02,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:20:02,197 INFO L85 PathProgramCache]: Analyzing trace with hash -476919121, now seen corresponding path program 4 times
[2021-11-20 07:20:02,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-20 07:20:02,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [671369122]
[2021-11-20 07:20:02,198 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2021-11-20 07:20:02,198 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-20 07:20:02,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat
[2021-11-20 07:20:02,199 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-20 07:20:02,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process
[2021-11-20 07:20:02,527 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-11-20 07:20:02,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-20 07:20:02,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 33 conjunts are in the unsatisfiable core
[2021-11-20 07:20:02,553 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:20:03,814 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:20:03,814 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-20 07:20:08,186 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 07:20:08,186 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-20 07:20:08,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [671369122]
[2021-11-20 07:20:08,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [671369122] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-20 07:20:08,187 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-20 07:20:08,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66
[2021-11-20 07:20:08,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624840965]
[2021-11-20 07:20:08,187 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-20 07:20:08,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states
[2021-11-20 07:20:08,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-20 07:20:08,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants.
[2021-11-20 07:20:08,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290
[2021-11-20 07:20:08,190 INFO L87 Difference]: Start difference. First operand 3763 states and 5056 transitions. Second operand has 66 states, 66 states have (on average 2.0606060606060606) internal successors, (136), 66 states have internal predecessors, (136), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2021-11-20 07:20:26,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 07:20:26,404 INFO L93 Difference]: Finished difference Result 3855 states and 5263 transitions.
[2021-11-20 07:20:26,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states.
[2021-11-20 07:20:26,405 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.0606060606060606) internal successors, (136), 66 states have internal predecessors, (136), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 105
[2021-11-20 07:20:26,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 07:20:26,413 INFO L225 Difference]: With dead ends: 3855
[2021-11-20 07:20:26,414 INFO L226 Difference]: Without dead ends: 3851
[2021-11-20 07:20:26,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2313 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=4503, Invalid=14679, Unknown=0, NotChecked=0, Total=19182
[2021-11-20 07:20:26,422 INFO L933 BasicCegarLoop]: 2138 mSDtfsCounter, 257 mSDsluCounter, 68229 mSDsCounter, 0 mSdLazyCounter, 5086 mSolverCounterSat, 508 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 70367 SdHoareTripleChecker+Invalid, 5594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 508 IncrementalHoareTripleChecker+Valid, 5086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time
[2021-11-20 07:20:26,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 70367 Invalid, 5594 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [508 Valid, 5086 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time]
[2021-11-20 07:20:26,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3851 states.
[2021-11-20 07:20:26,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3851 to 3793.
[2021-11-20 07:20:26,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3793 states, 2915 states have (on average 1.728301886792453) internal successors, (5038), 3762 states have internal predecessors, (5038), 30 states have call successors, (30), 4 states have call predecessors, (30), 5 states have return successors, (34), 27 states have call predecessors, (34), 30 states have call successors, (34)
[2021-11-20 07:20:26,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3793 states to 3793 states and 5102 transitions.
[2021-11-20 07:20:26,489 INFO L78 Accepts]: Start accepts. Automaton has 3793 states and 5102 transitions. Word has length 105
[2021-11-20 07:20:26,490 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-20 07:20:26,490 INFO L470 AbstractCegarLoop]: Abstraction has 3793 states and 5102 transitions.
[2021-11-20 07:20:26,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.0606060606060606) internal successors, (136), 66 states have internal predecessors, (136), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2021-11-20 07:20:26,491 INFO L276 IsEmpty]: Start isEmpty. Operand 3793 states and 5102 transitions.
[2021-11-20 07:20:26,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120
[2021-11-20 07:20:26,492 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-20 07:20:26,492 INFO L514 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 07:20:26,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0
[2021-11-20 07:20:26,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3
[2021-11-20 07:20:26,709 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] ===
[2021-11-20 07:20:26,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 07:20:26,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1997795441, now seen corresponding path program 5 times
[2021-11-20 07:20:26,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-20 07:20:26,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1318972821]
[2021-11-20 07:20:26,711 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2021-11-20 07:20:26,711 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-20 07:20:26,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat
[2021-11-20 07:20:26,712 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-20 07:20:26,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process
[2021-11-20 07:20:27,878 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s)
[2021-11-20 07:20:27,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-20 07:20:27,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 55 conjunts are in the unsatisfiable core
[2021-11-20 07:20:27,915 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:20:27,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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
[2021-11-20 07:20:28,226 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size
[2021-11-20 07:20:28,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 27
[2021-11-20 07:20:28,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22
[2021-11-20 07:20:28,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22
[2021-11-20 07:24:51,479 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory")
[2021-11-20 07:24:51,480 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-20 07:24:51,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1318972821]
[2021-11-20 07:24:51,481 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory")
[2021-11-20 07:24:51,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1468851176]
[2021-11-20 07:24:51,481 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2021-11-20 07:24:51,482 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2021-11-20 07:24:51,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/cvc4
[2021-11-20 07:24:51,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101
[2021-11-20 07:24:51,485 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2021-11-20 07:24:51,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process
[2021-11-20 07:26:00,216 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s)
[2021-11-20 07:26:00,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-20 07:26:00,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 57 conjunts are in the unsatisfiable core
[2021-11-20 07:26:00,484 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-20 07:26:00,484 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken
[2021-11-20 07:26:00,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768126462]
[2021-11-20 07:26:00,485 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2021-11-20 07:26:00,485 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-20 07:26:00,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/z3
[2021-11-20 07:26:00,487 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-20 07:26:00,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850e4324-102f-4387-ae13-0e36f20ca28e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process