./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--hfcsusb.ko-entry_point.cil.out.i --full-output --architecture 64bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version 63182f13
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1f2b12-dfc1-44ce-81b4-3e54e94b80b4/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1f2b12-dfc1-44ce-81b4-3e54e94b80b4/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1f2b12-dfc1-44ce-81b4-3e54e94b80b4/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1f2b12-dfc1-44ce-81b4-3e54e94b80b4/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--hfcsusb.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1f2b12-dfc1-44ce-81b4-3e54e94b80b4/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1f2b12-dfc1-44ce-81b4-3e54e94b80b4/bin/uautomizer-YU5uOKAj3y --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash dac564b3c3a3d92c70c6b64cab263655f73325d953da5e99709a7250df803cc8
--- Real Ultimate output ---
This is Ultimate 0.2.1-dev-63182f1
[2021-11-13 17:45:46,424 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-11-13 17:45:46,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-11-13 17:45:46,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-11-13 17:45:46,457 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-11-13 17:45:46,458 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-11-13 17:45:46,460 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-11-13 17:45:46,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-11-13 17:45:46,465 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-11-13 17:45:46,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-11-13 17:45:46,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-11-13 17:45:46,469 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-11-13 17:45:46,470 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-11-13 17:45:46,471 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-11-13 17:45:46,473 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-11-13 17:45:46,474 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-11-13 17:45:46,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-11-13 17:45:46,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-11-13 17:45:46,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-11-13 17:45:46,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-11-13 17:45:46,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-11-13 17:45:46,486 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-11-13 17:45:46,487 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-11-13 17:45:46,489 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-11-13 17:45:46,492 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-11-13 17:45:46,493 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-11-13 17:45:46,493 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-11-13 17:45:46,495 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-11-13 17:45:46,495 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-11-13 17:45:46,497 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-11-13 17:45:46,497 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-11-13 17:45:46,498 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-11-13 17:45:46,499 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-11-13 17:45:46,500 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2021-11-13 17:45:46,502 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-11-13 17:45:46,502 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2021-11-13 17:45:46,503 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-11-13 17:45:46,504 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-11-13 17:45:46,505 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2021-11-13 17:45:46,506 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2021-11-13 17:45:46,507 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-11-13 17:45:46,508 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1f2b12-dfc1-44ce-81b4-3e54e94b80b4/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf
[2021-11-13 17:45:46,531 INFO L113 SettingsManager]: Loading preferences was successful
[2021-11-13 17:45:46,531 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-11-13 17:45:46,531 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-11-13 17:45:46,532 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-11-13 17:45:46,532 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-11-13 17:45:46,533 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-11-13 17:45:46,534 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-11-13 17:45:46,534 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-11-13 17:45:46,534 INFO L138 SettingsManager]: * Use SBE=true
[2021-11-13 17:45:46,534 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-11-13 17:45:46,535 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-11-13 17:45:46,535 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-11-13 17:45:46,535 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-11-13 17:45:46,535 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-11-13 17:45:46,540 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-11-13 17:45:46,540 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-11-13 17:45:46,540 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-11-13 17:45:46,541 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-11-13 17:45:46,541 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-11-13 17:45:46,541 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-11-13 17:45:46,541 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-11-13 17:45:46,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 17:45:46,542 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-11-13 17:45:46,542 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-11-13 17:45:46,542 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-11-13 17:45:46,543 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2021-11-13 17:45:46,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-11-13 17:45:46,543 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF
[2021-11-13 17:45:46,543 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2021-11-13 17:45:46,543 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-11-13 17:45:46,544 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2021-11-13 17:45:46,544 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_7c1f2b12-dfc1-44ce-81b4-3e54e94b80b4/bin/uautomizer-YU5uOKAj3y/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1f2b12-dfc1-44ce-81b4-3e54e94b80b4/bin/uautomizer-YU5uOKAj3y
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dac564b3c3a3d92c70c6b64cab263655f73325d953da5e99709a7250df803cc8
[2021-11-13 17:45:46,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-11-13 17:45:46,894 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-11-13 17:45:46,897 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-11-13 17:45:46,898 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-11-13 17:45:46,899 INFO L275 PluginConnector]: CDTParser initialized
[2021-11-13 17:45:46,901 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1f2b12-dfc1-44ce-81b4-3e54e94b80b4/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--hfcsusb.ko-entry_point.cil.out.i
[2021-11-13 17:45:47,004 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1f2b12-dfc1-44ce-81b4-3e54e94b80b4/bin/uautomizer-YU5uOKAj3y/data/039cc13eb/58d60afbe4db47f8851cf5c59920cb01/FLAG9a9b968a9
[2021-11-13 17:45:47,950 INFO L306 CDTParser]: Found 1 translation units.
[2021-11-13 17:45:47,951 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1f2b12-dfc1-44ce-81b4-3e54e94b80b4/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--hfcsusb.ko-entry_point.cil.out.i
[2021-11-13 17:45:48,005 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1f2b12-dfc1-44ce-81b4-3e54e94b80b4/bin/uautomizer-YU5uOKAj3y/data/039cc13eb/58d60afbe4db47f8851cf5c59920cb01/FLAG9a9b968a9
[2021-11-13 17:45:48,338 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1f2b12-dfc1-44ce-81b4-3e54e94b80b4/bin/uautomizer-YU5uOKAj3y/data/039cc13eb/58d60afbe4db47f8851cf5c59920cb01
[2021-11-13 17:45:48,340 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-11-13 17:45:48,342 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2021-11-13 17:45:48,344 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-11-13 17:45:48,344 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-11-13 17:45:48,348 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-11-13 17:45:48,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:45:48" (1/1) ...
[2021-11-13 17:45:48,350 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43a9650e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:48, skipping insertion in model container
[2021-11-13 17:45:48,350 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:45:48" (1/1) ...
[2021-11-13 17:45:48,358 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-11-13 17:45:48,474 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-11-13 17:45:49,256 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6069]
[2021-11-13 17:45:49,257 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * ,
size_t ) [6070-6071]
[2021-11-13 17:45:49,563 WARN L228 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_7c1f2b12-dfc1-44ce-81b4-3e54e94b80b4/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--hfcsusb.ko-entry_point.cil.out.i[181805,181818]
[2021-11-13 17:45:50,648 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-11-13 17:45:50,702 INFO L203 MainTranslator]: Completed pre-run
[2021-11-13 17:45:50,966 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6069]
[2021-11-13 17:45:50,968 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * ,
size_t ) [6070-6071]
[2021-11-13 17:45:50,977 WARN L228 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_7c1f2b12-dfc1-44ce-81b4-3e54e94b80b4/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--hfcsusb.ko-entry_point.cil.out.i[181805,181818]
[2021-11-13 17:45:51,317 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-11-13 17:45:51,412 INFO L208 MainTranslator]: Completed translation
[2021-11-13 17:45:51,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:51 WrapperNode
[2021-11-13 17:45:51,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-11-13 17:45:51,414 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-11-13 17:45:51,415 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-11-13 17:45:51,415 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2021-11-13 17:45:51,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:51" (1/1) ...
[2021-11-13 17:45:51,566 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:51" (1/1) ...
[2021-11-13 17:45:51,727 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-11-13 17:45:51,728 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-11-13 17:45:51,729 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-11-13 17:45:51,729 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-11-13 17:45:51,739 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:51" (1/1) ...
[2021-11-13 17:45:51,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:51" (1/1) ...
[2021-11-13 17:45:51,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:51" (1/1) ...
[2021-11-13 17:45:51,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:51" (1/1) ...
[2021-11-13 17:45:51,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:51" (1/1) ...
[2021-11-13 17:45:51,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:51" (1/1) ...
[2021-11-13 17:45:51,924 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:51" (1/1) ...
[2021-11-13 17:45:51,948 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-11-13 17:45:51,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-11-13 17:45:51,949 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-11-13 17:45:51,950 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-11-13 17:45:51,951 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:51" (1/1) ...
[2021-11-13 17:45:51,963 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 17:45:51,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1f2b12-dfc1-44ce-81b4-3e54e94b80b4/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 17:45:51,996 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1f2b12-dfc1-44ce-81b4-3e54e94b80b4/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-11-13 17:45:52,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1f2b12-dfc1-44ce-81b4-3e54e94b80b4/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-11-13 17:45:52,050 INFO L130 BoogieDeclarations]: Found specification of procedure write_reg
[2021-11-13 17:45:52,050 INFO L138 BoogieDeclarations]: Found implementation of procedure write_reg
[2021-11-13 17:45:52,050 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb
[2021-11-13 17:45:52,051 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb
[2021-11-13 17:45:52,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$
[2021-11-13 17:45:52,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$
[2021-11-13 17:45:52,051 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop
[2021-11-13 17:45:52,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop
[2021-11-13 17:45:52,051 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock
[2021-11-13 17:45:52,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock
[2021-11-13 17:45:52,052 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc
[2021-11-13 17:45:52,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc
[2021-11-13 17:45:52,052 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error
[2021-11-13 17:45:52,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error
[2021-11-13 17:45:52,052 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2021-11-13 17:45:52,053 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2021-11-13 17:45:52,053 INFO L130 BoogieDeclarations]: Found specification of procedure hfcsusb_probe
[2021-11-13 17:45:52,053 INFO L138 BoogieDeclarations]: Found implementation of procedure hfcsusb_probe
[2021-11-13 17:45:52,053 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check
[2021-11-13 17:45:52,053 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check
[2021-11-13 17:45:52,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-11-13 17:45:52,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2021-11-13 17:45:52,054 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock
[2021-11-13 17:45:52,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock
[2021-11-13 17:45:52,054 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore
[2021-11-13 17:45:52,054 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore
[2021-11-13 17:45:52,054 INFO L130 BoogieDeclarations]: Found specification of procedure ctrl_start_transfer
[2021-11-13 17:45:52,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ctrl_start_transfer
[2021-11-13 17:45:52,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-11-13 17:45:52,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$
[2021-11-13 17:45:52,055 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc
[2021-11-13 17:45:52,055 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc
[2021-11-13 17:45:52,055 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata
[2021-11-13 17:45:52,055 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata
[2021-11-13 17:45:52,056 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock
[2021-11-13 17:45:52,056 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock
[2021-11-13 17:45:52,056 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb
[2021-11-13 17:45:52,056 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb
[2021-11-13 17:45:52,056 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int
[2021-11-13 17:45:52,056 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc
[2021-11-13 17:45:52,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc
[2021-11-13 17:45:52,057 INFO L130 BoogieDeclarations]: Found specification of procedure mISDN_freebchannel
[2021-11-13 17:45:52,057 INFO L138 BoogieDeclarations]: Found implementation of procedure mISDN_freebchannel
[2021-11-13 17:45:52,057 INFO L130 BoogieDeclarations]: Found specification of procedure mISDN_freedchannel
[2021-11-13 17:45:52,057 INFO L138 BoogieDeclarations]: Found implementation of procedure mISDN_freedchannel
[2021-11-13 17:45:52,057 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init
[2021-11-13 17:45:52,058 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init
[2021-11-13 17:45:52,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int
[2021-11-13 17:45:52,058 INFO L130 BoogieDeclarations]: Found specification of procedure handle_led
[2021-11-13 17:45:52,058 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_led
[2021-11-13 17:45:52,058 INFO L130 BoogieDeclarations]: Found specification of procedure mISDN_initdchannel
[2021-11-13 17:45:52,058 INFO L138 BoogieDeclarations]: Found implementation of procedure mISDN_initdchannel
[2021-11-13 17:45:52,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2021-11-13 17:45:52,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy
[2021-11-13 17:45:52,059 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy
[2021-11-13 17:45:52,059 INFO L130 BoogieDeclarations]: Found specification of procedure stop_iso_gracefull
[2021-11-13 17:45:52,059 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_iso_gracefull
[2021-11-13 17:45:52,059 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe
[2021-11-13 17:45:52,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe
[2021-11-13 17:45:52,060 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags
[2021-11-13 17:45:52,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags
[2021-11-13 17:45:52,060 INFO L130 BoogieDeclarations]: Found specification of procedure kfree
[2021-11-13 17:45:52,060 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree
[2021-11-13 17:45:52,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2021-11-13 17:45:52,060 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_interruptible
[2021-11-13 17:45:52,060 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_interruptible
[2021-11-13 17:45:52,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2021-11-13 17:45:52,061 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add
[2021-11-13 17:45:52,061 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add
[2021-11-13 17:45:52,061 INFO L130 BoogieDeclarations]: Found specification of procedure set_led_bit
[2021-11-13 17:45:52,061 INFO L138 BoogieDeclarations]: Found implementation of procedure set_led_bit
[2021-11-13 17:45:52,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2021-11-13 17:45:52,062 INFO L130 BoogieDeclarations]: Found specification of procedure l1_event
[2021-11-13 17:45:52,062 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_event
[2021-11-13 17:45:52,062 INFO L130 BoogieDeclarations]: Found specification of procedure hfcsusb_stop_endpoint
[2021-11-13 17:45:52,062 INFO L138 BoogieDeclarations]: Found implementation of procedure hfcsusb_stop_endpoint
[2021-11-13 17:45:52,062 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock
[2021-11-13 17:45:52,062 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock
[2021-11-13 17:45:52,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-11-13 17:45:52,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-11-13 17:45:52,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-11-13 17:45:53,076 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true;
[2021-11-13 17:46:09,102 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-11-13 17:46:09,109 INFO L299 CfgBuilder]: Removed 0 assume(true) statements.
[2021-11-13 17:46:09,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:46:09 BoogieIcfgContainer
[2021-11-13 17:46:09,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-11-13 17:46:09,120 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-11-13 17:46:09,120 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-11-13 17:46:09,125 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-11-13 17:46:09,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:45:48" (1/3) ...
[2021-11-13 17:46:09,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55645319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:46:09, skipping insertion in model container
[2021-11-13 17:46:09,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:51" (2/3) ...
[2021-11-13 17:46:09,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55645319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:46:09, skipping insertion in model container
[2021-11-13 17:46:09,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:46:09" (3/3) ...
[2021-11-13 17:46:09,131 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--hfcsusb.ko-entry_point.cil.out.i
[2021-11-13 17:46:09,138 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-11-13 17:46:09,139 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-11-13 17:46:09,228 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-11-13 17:46:09,240 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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
[2021-11-13 17:46:09,240 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-11-13 17:46:09,317 INFO L276 IsEmpty]: Start isEmpty. Operand has 502 states, 373 states have (on average 1.353887399463807) internal successors, (505), 382 states have internal predecessors, (505), 95 states have call successors, (95), 33 states have call predecessors, (95), 32 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92)
[2021-11-13 17:46:09,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2021-11-13 17:46:09,334 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:46:09,335 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]
[2021-11-13 17:46:09,336 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:46:09,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:46:09,343 INFO L85 PathProgramCache]: Analyzing trace with hash 2015975527, now seen corresponding path program 1 times
[2021-11-13 17:46:09,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:46:09,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501762014]
[2021-11-13 17:46:09,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:46:09,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:46:09,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:46:10,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-11-13 17:46:10,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:46:10,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:46:10,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:46:10,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501762014]
[2021-11-13 17:46:10,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501762014] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 17:46:10,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 17:46:10,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-11-13 17:46:10,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685746800]
[2021-11-13 17:46:10,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 17:46:10,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-13 17:46:10,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:46:10,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-13 17:46:10,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-11-13 17:46:10,421 INFO L87 Difference]: Start difference. First operand has 502 states, 373 states have (on average 1.353887399463807) internal successors, (505), 382 states have internal predecessors, (505), 95 states have call successors, (95), 33 states have call predecessors, (95), 32 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 17:46:12,575 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:46:17,096 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:46:17,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:46:17,296 INFO L93 Difference]: Finished difference Result 1083 states and 1544 transitions.
[2021-11-13 17:46:17,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-11-13 17:46:17,303 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30
[2021-11-13 17:46:17,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:46:17,326 INFO L225 Difference]: With dead ends: 1083
[2021-11-13 17:46:17,326 INFO L226 Difference]: Without dead ends: 563
[2021-11-13 17:46:17,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-11-13 17:46:17,342 INFO L933 BasicCegarLoop]: 641 mSDtfsCounter, 216 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 111 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6288.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 1343 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.54ms SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6561.77ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:46:17,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 1343 Invalid, 614 Unknown, 0 Unchecked, 28.54ms Time], IncrementalHoareTripleChecker [111 Valid, 501 Invalid, 2 Unknown, 0 Unchecked, 6561.77ms Time]
[2021-11-13 17:46:17,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states.
[2021-11-13 17:46:17,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 512.
[2021-11-13 17:46:17,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 385 states have (on average 1.3428571428571427) internal successors, (517), 389 states have internal predecessors, (517), 93 states have call successors, (93), 34 states have call predecessors, (93), 33 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92)
[2021-11-13 17:46:17,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 702 transitions.
[2021-11-13 17:46:17,454 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 702 transitions. Word has length 30
[2021-11-13 17:46:17,454 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:46:17,455 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 702 transitions.
[2021-11-13 17:46:17,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 17:46:17,455 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 702 transitions.
[2021-11-13 17:46:17,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50
[2021-11-13 17:46:17,459 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:46:17,459 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:46:17,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-11-13 17:46:17,460 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:46:17,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:46:17,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1592596621, now seen corresponding path program 1 times
[2021-11-13 17:46:17,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:46:17,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153181731]
[2021-11-13 17:46:17,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:46:17,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:46:17,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:46:17,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-11-13 17:46:17,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:46:17,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2021-11-13 17:46:17,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:46:17,830 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2021-11-13 17:46:17,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:46:17,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153181731]
[2021-11-13 17:46:17,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153181731] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 17:46:17,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 17:46:17,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-11-13 17:46:17,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469958915]
[2021-11-13 17:46:17,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 17:46:17,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-13 17:46:17,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:46:17,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-13 17:46:17,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-11-13 17:46:17,834 INFO L87 Difference]: Start difference. First operand 512 states and 702 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2021-11-13 17:46:19,910 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:46:24,418 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:46:24,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:46:24,604 INFO L93 Difference]: Finished difference Result 1067 states and 1492 transitions.
[2021-11-13 17:46:24,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-11-13 17:46:24,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 49
[2021-11-13 17:46:24,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:46:24,612 INFO L225 Difference]: With dead ends: 1067
[2021-11-13 17:46:24,613 INFO L226 Difference]: Without dead ends: 571
[2021-11-13 17:46:24,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-11-13 17:46:24,618 INFO L933 BasicCegarLoop]: 625 mSDtfsCounter, 173 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 100 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6248.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 1314 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.41ms SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6666.71ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:46:24,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 1314 Invalid, 596 Unknown, 0 Unchecked, 18.41ms Time], IncrementalHoareTripleChecker [100 Valid, 494 Invalid, 2 Unknown, 0 Unchecked, 6666.71ms Time]
[2021-11-13 17:46:24,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states.
[2021-11-13 17:46:24,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 519.
[2021-11-13 17:46:24,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 392 states have (on average 1.344387755102041) internal successors, (527), 396 states have internal predecessors, (527), 93 states have call successors, (93), 34 states have call predecessors, (93), 33 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92)
[2021-11-13 17:46:24,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 712 transitions.
[2021-11-13 17:46:24,667 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 712 transitions. Word has length 49
[2021-11-13 17:46:24,667 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:46:24,667 INFO L470 AbstractCegarLoop]: Abstraction has 519 states and 712 transitions.
[2021-11-13 17:46:24,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2021-11-13 17:46:24,668 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 712 transitions.
[2021-11-13 17:46:24,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56
[2021-11-13 17:46:24,672 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:46:24,672 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:46:24,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-11-13 17:46:24,673 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:46:24,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:46:24,673 INFO L85 PathProgramCache]: Analyzing trace with hash -725279773, now seen corresponding path program 1 times
[2021-11-13 17:46:24,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:46:24,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419819160]
[2021-11-13 17:46:24,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:46:24,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:46:24,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:46:25,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-11-13 17:46:25,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:46:25,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2021-11-13 17:46:25,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:46:25,064 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2021-11-13 17:46:25,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:46:25,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419819160]
[2021-11-13 17:46:25,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419819160] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 17:46:25,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 17:46:25,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-11-13 17:46:25,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911195478]
[2021-11-13 17:46:25,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 17:46:25,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-13 17:46:25,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:46:25,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-13 17:46:25,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-11-13 17:46:25,070 INFO L87 Difference]: Start difference. First operand 519 states and 712 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2021-11-13 17:46:27,157 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:46:31,254 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:46:31,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:46:31,443 INFO L93 Difference]: Finished difference Result 1115 states and 1567 transitions.
[2021-11-13 17:46:31,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-11-13 17:46:31,444 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 55
[2021-11-13 17:46:31,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:46:31,452 INFO L225 Difference]: With dead ends: 1115
[2021-11-13 17:46:31,452 INFO L226 Difference]: Without dead ends: 612
[2021-11-13 17:46:31,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-11-13 17:46:31,463 INFO L933 BasicCegarLoop]: 626 mSDtfsCounter, 222 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 102 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5945.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 1315 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.33ms SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6278.69ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:46:31,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 1315 Invalid, 604 Unknown, 0 Unchecked, 17.33ms Time], IncrementalHoareTripleChecker [102 Valid, 500 Invalid, 2 Unknown, 0 Unchecked, 6278.69ms Time]
[2021-11-13 17:46:31,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states.
[2021-11-13 17:46:31,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 560.
[2021-11-13 17:46:31,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 431 states have (on average 1.359628770301624) internal successors, (586), 435 states have internal predecessors, (586), 95 states have call successors, (95), 34 states have call predecessors, (95), 33 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94)
[2021-11-13 17:46:31,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 775 transitions.
[2021-11-13 17:46:31,545 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 775 transitions. Word has length 55
[2021-11-13 17:46:31,550 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:46:31,550 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 775 transitions.
[2021-11-13 17:46:31,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2021-11-13 17:46:31,559 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 775 transitions.
[2021-11-13 17:46:31,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79
[2021-11-13 17:46:31,573 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:46:31,573 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:46:31,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-11-13 17:46:31,574 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:46:31,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:46:31,575 INFO L85 PathProgramCache]: Analyzing trace with hash -232463337, now seen corresponding path program 1 times
[2021-11-13 17:46:31,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:46:31,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721456380]
[2021-11-13 17:46:31,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:46:31,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:46:31,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:46:31,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-11-13 17:46:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:46:31,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2021-11-13 17:46:31,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:46:31,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52
[2021-11-13 17:46:31,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:46:32,000 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2021-11-13 17:46:32,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:46:32,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721456380]
[2021-11-13 17:46:32,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721456380] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 17:46:32,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 17:46:32,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-11-13 17:46:32,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185691903]
[2021-11-13 17:46:32,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 17:46:32,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-11-13 17:46:32,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:46:32,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-11-13 17:46:32,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2021-11-13 17:46:32,005 INFO L87 Difference]: Start difference. First operand 560 states and 775 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2021-11-13 17:46:34,102 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:46:36,217 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:46:42,204 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:46:44,237 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:46:46,429 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:46:48,474 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:46:48,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:46:48,738 INFO L93 Difference]: Finished difference Result 1531 states and 2229 transitions.
[2021-11-13 17:46:48,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2021-11-13 17:46:48,739 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 78
[2021-11-13 17:46:48,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:46:48,748 INFO L225 Difference]: With dead ends: 1531
[2021-11-13 17:46:48,748 INFO L226 Difference]: Without dead ends: 987
[2021-11-13 17:46:48,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2021-11-13 17:46:48,752 INFO L933 BasicCegarLoop]: 635 mSDtfsCounter, 701 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 346 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15841.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 1543 SdHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.09ms SdHoareTripleChecker+Time, 346 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16561.77ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:46:48,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [760 Valid, 1543 Invalid, 1283 Unknown, 0 Unchecked, 24.09ms Time], IncrementalHoareTripleChecker [346 Valid, 931 Invalid, 6 Unknown, 0 Unchecked, 16561.77ms Time]
[2021-11-13 17:46:48,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states.
[2021-11-13 17:46:48,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 562.
[2021-11-13 17:46:48,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 433 states have (on average 1.3579676674364896) internal successors, (588), 437 states have internal predecessors, (588), 95 states have call successors, (95), 34 states have call predecessors, (95), 33 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94)
[2021-11-13 17:46:48,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 777 transitions.
[2021-11-13 17:46:48,791 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 777 transitions. Word has length 78
[2021-11-13 17:46:48,792 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:46:48,792 INFO L470 AbstractCegarLoop]: Abstraction has 562 states and 777 transitions.
[2021-11-13 17:46:48,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2021-11-13 17:46:48,792 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 777 transitions.
[2021-11-13 17:46:48,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82
[2021-11-13 17:46:48,795 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:46:48,795 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:46:48,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-11-13 17:46:48,796 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:46:48,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:46:48,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1595880674, now seen corresponding path program 1 times
[2021-11-13 17:46:48,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:46:48,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67572306]
[2021-11-13 17:46:48,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:46:48,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:46:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:46:49,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-11-13 17:46:49,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:46:49,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2021-11-13 17:46:49,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:46:49,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55
[2021-11-13 17:46:49,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:46:49,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2021-11-13 17:46:49,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:46:49,119 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2021-11-13 17:46:49,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:46:49,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67572306]
[2021-11-13 17:46:49,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67572306] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 17:46:49,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 17:46:49,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-11-13 17:46:49,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715524418]
[2021-11-13 17:46:49,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 17:46:49,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-11-13 17:46:49,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:46:49,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-11-13 17:46:49,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2021-11-13 17:46:49,122 INFO L87 Difference]: Start difference. First operand 562 states and 777 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4)
[2021-11-13 17:46:51,227 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:46:53,332 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:46:55,413 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:46:59,926 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:47:00,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:47:00,834 INFO L93 Difference]: Finished difference Result 1344 states and 1870 transitions.
[2021-11-13 17:47:00,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2021-11-13 17:47:00,834 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 81
[2021-11-13 17:47:00,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:47:00,841 INFO L225 Difference]: With dead ends: 1344
[2021-11-13 17:47:00,842 INFO L226 Difference]: Without dead ends: 798
[2021-11-13 17:47:00,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72
[2021-11-13 17:47:00,846 INFO L933 BasicCegarLoop]: 718 mSDtfsCounter, 944 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 424 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10942.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 1202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.44ms SdHoareTripleChecker+Time, 424 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11558.55ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:47:00,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [979 Valid, 1303 Invalid, 1202 Unknown, 0 Unchecked, 16.44ms Time], IncrementalHoareTripleChecker [424 Valid, 774 Invalid, 4 Unknown, 0 Unchecked, 11558.55ms Time]
[2021-11-13 17:47:00,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states.
[2021-11-13 17:47:00,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 703.
[2021-11-13 17:47:00,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 537 states have (on average 1.3463687150837989) internal successors, (723), 542 states have internal predecessors, (723), 118 states have call successors, (118), 48 states have call predecessors, (118), 47 states have return successors, (117), 117 states have call predecessors, (117), 117 states have call successors, (117)
[2021-11-13 17:47:00,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 958 transitions.
[2021-11-13 17:47:00,946 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 958 transitions. Word has length 81
[2021-11-13 17:47:00,947 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:47:00,947 INFO L470 AbstractCegarLoop]: Abstraction has 703 states and 958 transitions.
[2021-11-13 17:47:00,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4)
[2021-11-13 17:47:00,948 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 958 transitions.
[2021-11-13 17:47:00,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84
[2021-11-13 17:47:00,951 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:47:00,952 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:47:00,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2021-11-13 17:47:00,952 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:47:00,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:47:00,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1746632066, now seen corresponding path program 1 times
[2021-11-13 17:47:00,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:47:00,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796857848]
[2021-11-13 17:47:00,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:47:00,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:47:01,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:47:01,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-11-13 17:47:01,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:47:01,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2021-11-13 17:47:01,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:47:01,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52
[2021-11-13 17:47:01,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:47:01,397 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2021-11-13 17:47:01,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:47:01,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796857848]
[2021-11-13 17:47:01,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796857848] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 17:47:01,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 17:47:01,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-11-13 17:47:01,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842733367]
[2021-11-13 17:47:01,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 17:47:01,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-11-13 17:47:01,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:47:01,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-11-13 17:47:01,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2021-11-13 17:47:01,401 INFO L87 Difference]: Start difference. First operand 703 states and 958 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2021-11-13 17:47:03,517 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:47:05,617 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:47:12,497 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:47:14,532 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:47:16,989 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:47:19,029 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:47:19,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:47:19,280 INFO L93 Difference]: Finished difference Result 1869 states and 2665 transitions.
[2021-11-13 17:47:19,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2021-11-13 17:47:19,281 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 83
[2021-11-13 17:47:19,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:47:19,290 INFO L225 Difference]: With dead ends: 1869
[2021-11-13 17:47:19,290 INFO L226 Difference]: Without dead ends: 1182
[2021-11-13 17:47:19,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2021-11-13 17:47:19,295 INFO L933 BasicCegarLoop]: 877 mSDtfsCounter, 620 mSDsluCounter, 1202 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 258 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16951.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 2079 SdHoareTripleChecker+Invalid, 1351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.39ms SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17727.77ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:47:19,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [679 Valid, 2079 Invalid, 1351 Unknown, 0 Unchecked, 20.39ms Time], IncrementalHoareTripleChecker [258 Valid, 1087 Invalid, 6 Unknown, 0 Unchecked, 17727.77ms Time]
[2021-11-13 17:47:19,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states.
[2021-11-13 17:47:19,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 757.
[2021-11-13 17:47:19,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 757 states, 591 states have (on average 1.365482233502538) internal successors, (807), 596 states have internal predecessors, (807), 118 states have call successors, (118), 48 states have call predecessors, (118), 47 states have return successors, (117), 117 states have call predecessors, (117), 117 states have call successors, (117)
[2021-11-13 17:47:19,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 1042 transitions.
[2021-11-13 17:47:19,346 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 1042 transitions. Word has length 83
[2021-11-13 17:47:19,347 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:47:19,347 INFO L470 AbstractCegarLoop]: Abstraction has 757 states and 1042 transitions.
[2021-11-13 17:47:19,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2021-11-13 17:47:19,347 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 1042 transitions.
[2021-11-13 17:47:19,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84
[2021-11-13 17:47:19,350 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:47:19,350 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:47:19,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2021-11-13 17:47:19,350 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:47:19,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:47:19,351 INFO L85 PathProgramCache]: Analyzing trace with hash -247512640, now seen corresponding path program 1 times
[2021-11-13 17:47:19,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:47:19,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750354322]
[2021-11-13 17:47:19,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:47:19,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:47:19,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:47:19,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-11-13 17:47:19,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:47:19,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2021-11-13 17:47:19,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:47:19,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52
[2021-11-13 17:47:19,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:47:19,772 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2021-11-13 17:47:19,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:47:19,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750354322]
[2021-11-13 17:47:19,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750354322] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 17:47:19,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50837509]
[2021-11-13 17:47:19,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:47:19,774 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:47:19,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1f2b12-dfc1-44ce-81b4-3e54e94b80b4/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 17:47:19,776 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1f2b12-dfc1-44ce-81b4-3e54e94b80b4/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 17:47:19,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1f2b12-dfc1-44ce-81b4-3e54e94b80b4/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2021-11-13 17:47:21,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:47:21,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 3272 conjuncts, 3 conjunts are in the unsatisfiable core
[2021-11-13 17:47:21,133 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 17:47:21,385 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2021-11-13 17:47:21,386 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 17:47:21,602 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2021-11-13 17:47:21,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50837509] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 17:47:21,603 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2021-11-13 17:47:21,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9
[2021-11-13 17:47:21,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174263772]
[2021-11-13 17:47:21,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2021-11-13 17:47:21,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2021-11-13 17:47:21,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:47:21,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2021-11-13 17:47:21,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2021-11-13 17:47:21,605 INFO L87 Difference]: Start difference. First operand 757 states and 1042 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 7 states have internal predecessors, (83), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2021-11-13 17:47:23,736 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:47:25,856 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:47:33,514 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:47:35,555 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:47:37,859 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:47:39,907 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:47:40,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:47:40,699 INFO L93 Difference]: Finished difference Result 3177 states and 4755 transitions.
[2021-11-13 17:47:40,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2021-11-13 17:47:40,700 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 7 states have internal predecessors, (83), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 83
[2021-11-13 17:47:40,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:47:40,722 INFO L225 Difference]: With dead ends: 3177
[2021-11-13 17:47:40,722 INFO L226 Difference]: Without dead ends: 2436
[2021-11-13 17:47:40,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182
[2021-11-13 17:47:40,728 INFO L933 BasicCegarLoop]: 749 mSDtfsCounter, 2119 mSDsluCounter, 1762 mSDsCounter, 0 mSdLazyCounter, 1819 mSolverCounterSat, 836 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17796.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2334 SdHoareTripleChecker+Valid, 2511 SdHoareTripleChecker+Invalid, 2661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.34ms SdHoareTripleChecker+Time, 836 IncrementalHoareTripleChecker+Valid, 1819 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18783.00ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:47:40,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2334 Valid, 2511 Invalid, 2661 Unknown, 0 Unchecked, 33.34ms Time], IncrementalHoareTripleChecker [836 Valid, 1819 Invalid, 6 Unknown, 0 Unchecked, 18783.00ms Time]
[2021-11-13 17:47:40,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2436 states.
[2021-11-13 17:47:40,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2436 to 817.
[2021-11-13 17:47:40,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 651 states have (on average 1.368663594470046) internal successors, (891), 656 states have internal predecessors, (891), 118 states have call successors, (118), 48 states have call predecessors, (118), 47 states have return successors, (117), 117 states have call predecessors, (117), 117 states have call successors, (117)
[2021-11-13 17:47:40,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1126 transitions.
[2021-11-13 17:47:40,813 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1126 transitions. Word has length 83
[2021-11-13 17:47:40,814 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:47:40,815 INFO L470 AbstractCegarLoop]: Abstraction has 817 states and 1126 transitions.
[2021-11-13 17:47:40,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 7 states have internal predecessors, (83), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2021-11-13 17:47:40,815 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1126 transitions.
[2021-11-13 17:47:40,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97
[2021-11-13 17:47:40,818 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:47:40,819 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:47:40,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1f2b12-dfc1-44ce-81b4-3e54e94b80b4/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2021-11-13 17:47:41,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1f2b12-dfc1-44ce-81b4-3e54e94b80b4/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6
[2021-11-13 17:47:41,040 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:47:41,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:47:41,041 INFO L85 PathProgramCache]: Analyzing trace with hash -2050556224, now seen corresponding path program 1 times
[2021-11-13 17:47:41,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:47:41,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656572929]
[2021-11-13 17:47:41,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:47:41,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:47:41,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:47:41,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-11-13 17:47:41,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:47:41,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2021-11-13 17:47:41,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:47:41,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33
[2021-11-13 17:47:41,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:47:41,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70
[2021-11-13 17:47:41,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:47:41,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2021-11-13 17:47:41,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:47:41,514 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2021-11-13 17:47:41,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:47:41,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656572929]
[2021-11-13 17:47:41,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656572929] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 17:47:41,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 17:47:41,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2021-11-13 17:47:41,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4096434]
[2021-11-13 17:47:41,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 17:47:41,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2021-11-13 17:47:41,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:47:41,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2021-11-13 17:47:41,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2021-11-13 17:47:41,517 INFO L87 Difference]: Start difference. First operand 817 states and 1126 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2021-11-13 17:47:43,626 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:47:45,710 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:47:49,505 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:47:51,550 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:47:53,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:47:53,675 INFO L93 Difference]: Finished difference Result 1685 states and 2342 transitions.
[2021-11-13 17:47:53,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2021-11-13 17:47:53,675 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 96
[2021-11-13 17:47:53,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:47:53,681 INFO L225 Difference]: With dead ends: 1685
[2021-11-13 17:47:53,682 INFO L226 Difference]: Without dead ends: 884
[2021-11-13 17:47:53,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210
[2021-11-13 17:47:53,686 INFO L933 BasicCegarLoop]: 592 mSDtfsCounter, 772 mSDsluCounter, 1694 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 442 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11271.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 2286 SdHoareTripleChecker+Invalid, 1624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.63ms SdHoareTripleChecker+Time, 442 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11881.10ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:47:53,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [808 Valid, 2286 Invalid, 1624 Unknown, 0 Unchecked, 21.63ms Time], IncrementalHoareTripleChecker [442 Valid, 1178 Invalid, 4 Unknown, 0 Unchecked, 11881.10ms Time]
[2021-11-13 17:47:53,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states.
[2021-11-13 17:47:53,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 798.
[2021-11-13 17:47:53,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 638 states have (on average 1.365203761755486) internal successors, (871), 643 states have internal predecessors, (871), 112 states have call successors, (112), 48 states have call predecessors, (112), 47 states have return successors, (111), 111 states have call predecessors, (111), 111 states have call successors, (111)
[2021-11-13 17:47:53,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1094 transitions.
[2021-11-13 17:47:53,737 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1094 transitions. Word has length 96
[2021-11-13 17:47:53,738 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:47:53,738 INFO L470 AbstractCegarLoop]: Abstraction has 798 states and 1094 transitions.
[2021-11-13 17:47:53,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2021-11-13 17:47:53,738 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1094 transitions.
[2021-11-13 17:47:53,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99
[2021-11-13 17:47:53,741 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:47:53,742 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:47:53,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2021-11-13 17:47:53,742 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:47:53,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:47:53,743 INFO L85 PathProgramCache]: Analyzing trace with hash 2089394007, now seen corresponding path program 2 times
[2021-11-13 17:47:53,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:47:53,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970132312]
[2021-11-13 17:47:53,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:47:53,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:47:53,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:47:54,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-11-13 17:47:54,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:47:54,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2021-11-13 17:47:54,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:47:54,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52
[2021-11-13 17:47:54,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:47:54,175 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked.
[2021-11-13 17:47:54,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:47:54,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970132312]
[2021-11-13 17:47:54,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970132312] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 17:47:54,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 17:47:54,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-11-13 17:47:54,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919801874]
[2021-11-13 17:47:54,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 17:47:54,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-11-13 17:47:54,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:47:54,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-11-13 17:47:54,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2021-11-13 17:47:54,178 INFO L87 Difference]: Start difference. First operand 798 states and 1094 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2021-11-13 17:47:56,293 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:47:58,395 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:48:03,148 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:48:05,189 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:48:06,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:48:06,362 INFO L93 Difference]: Finished difference Result 1092 states and 1550 transitions.
[2021-11-13 17:48:06,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2021-11-13 17:48:06,363 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 98
[2021-11-13 17:48:06,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:48:06,369 INFO L225 Difference]: With dead ends: 1092
[2021-11-13 17:48:06,369 INFO L226 Difference]: Without dead ends: 1089
[2021-11-13 17:48:06,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2021-11-13 17:48:06,371 INFO L933 BasicCegarLoop]: 605 mSDtfsCounter, 1021 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 325 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11434.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1054 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.79ms SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12013.06ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:48:06,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1054 Valid, 1097 Invalid, 935 Unknown, 0 Unchecked, 12.79ms Time], IncrementalHoareTripleChecker [325 Valid, 606 Invalid, 4 Unknown, 0 Unchecked, 12013.06ms Time]
[2021-11-13 17:48:06,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states.
[2021-11-13 17:48:06,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 802.
[2021-11-13 17:48:06,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 641 states have (on average 1.3634945397815912) internal successors, (874), 646 states have internal predecessors, (874), 112 states have call successors, (112), 49 states have call predecessors, (112), 48 states have return successors, (111), 111 states have call predecessors, (111), 111 states have call successors, (111)
[2021-11-13 17:48:06,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 1097 transitions.
[2021-11-13 17:48:06,424 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 1097 transitions. Word has length 98
[2021-11-13 17:48:06,424 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:48:06,424 INFO L470 AbstractCegarLoop]: Abstraction has 802 states and 1097 transitions.
[2021-11-13 17:48:06,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2021-11-13 17:48:06,425 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 1097 transitions.
[2021-11-13 17:48:06,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117
[2021-11-13 17:48:06,428 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:48:06,428 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:48:06,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2021-11-13 17:48:06,429 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:48:06,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:48:06,429 INFO L85 PathProgramCache]: Analyzing trace with hash -853712003, now seen corresponding path program 1 times
[2021-11-13 17:48:06,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:48:06,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478189586]
[2021-11-13 17:48:06,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:48:06,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:48:06,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:06,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-11-13 17:48:06,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:06,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2021-11-13 17:48:06,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:06,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33
[2021-11-13 17:48:06,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:06,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55
[2021-11-13 17:48:06,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:06,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62
[2021-11-13 17:48:06,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:06,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69
[2021-11-13 17:48:06,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:06,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76
[2021-11-13 17:48:06,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:06,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90
[2021-11-13 17:48:06,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:06,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2021-11-13 17:48:06,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:06,881 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked.
[2021-11-13 17:48:06,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:48:06,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478189586]
[2021-11-13 17:48:06,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478189586] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 17:48:06,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418436584]
[2021-11-13 17:48:06,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:48:06,883 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:48:06,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1f2b12-dfc1-44ce-81b4-3e54e94b80b4/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 17:48:06,888 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1f2b12-dfc1-44ce-81b4-3e54e94b80b4/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 17:48:06,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1f2b12-dfc1-44ce-81b4-3e54e94b80b4/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2021-11-13 17:48:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:08,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 3520 conjuncts, 4 conjunts are in the unsatisfiable core
[2021-11-13 17:48:08,048 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 17:48:08,342 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked.
[2021-11-13 17:48:08,342 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2021-11-13 17:48:08,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418436584] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 17:48:08,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2021-11-13 17:48:08,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12
[2021-11-13 17:48:08,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208879040]
[2021-11-13 17:48:08,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 17:48:08,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-11-13 17:48:08,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:48:08,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-11-13 17:48:08,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132
[2021-11-13 17:48:08,345 INFO L87 Difference]: Start difference. First operand 802 states and 1097 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9)
[2021-11-13 17:48:10,436 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:48:10,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:48:10,660 INFO L93 Difference]: Finished difference Result 2141 states and 2940 transitions.
[2021-11-13 17:48:10,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2021-11-13 17:48:10,660 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 116
[2021-11-13 17:48:10,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:48:10,669 INFO L225 Difference]: With dead ends: 2141
[2021-11-13 17:48:10,669 INFO L226 Difference]: Without dead ends: 1355
[2021-11-13 17:48:10,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182
[2021-11-13 17:48:10,673 INFO L933 BasicCegarLoop]: 1178 mSDtfsCounter, 510 mSDsluCounter, 3011 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2110.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 4189 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.45ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2221.57ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:48:10,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [511 Valid, 4189 Invalid, 21 Unknown, 0 Unchecked, 6.45ms Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 1 Unknown, 0 Unchecked, 2221.57ms Time]
[2021-11-13 17:48:10,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1355 states.
[2021-11-13 17:48:10,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1355 to 806.
[2021-11-13 17:48:10,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 644 states have (on average 1.3618012422360248) internal successors, (877), 649 states have internal predecessors, (877), 112 states have call successors, (112), 49 states have call predecessors, (112), 49 states have return successors, (112), 112 states have call predecessors, (112), 111 states have call successors, (112)
[2021-11-13 17:48:10,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1101 transitions.
[2021-11-13 17:48:10,732 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1101 transitions. Word has length 116
[2021-11-13 17:48:10,733 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:48:10,733 INFO L470 AbstractCegarLoop]: Abstraction has 806 states and 1101 transitions.
[2021-11-13 17:48:10,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9)
[2021-11-13 17:48:10,733 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1101 transitions.
[2021-11-13 17:48:10,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198
[2021-11-13 17:48:10,737 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:48:10,737 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:48:10,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1f2b12-dfc1-44ce-81b4-3e54e94b80b4/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2021-11-13 17:48:10,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1f2b12-dfc1-44ce-81b4-3e54e94b80b4/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2021-11-13 17:48:10,952 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:48:10,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:48:10,952 INFO L85 PathProgramCache]: Analyzing trace with hash -2124736263, now seen corresponding path program 1 times
[2021-11-13 17:48:10,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:48:10,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562265306]
[2021-11-13 17:48:10,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:48:10,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:48:11,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:11,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-11-13 17:48:11,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:11,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2021-11-13 17:48:11,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:11,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52
[2021-11-13 17:48:11,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:11,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91
[2021-11-13 17:48:11,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:11,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2021-11-13 17:48:11,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:11,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105
[2021-11-13 17:48:11,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:11,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110
[2021-11-13 17:48:11,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:11,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115
[2021-11-13 17:48:11,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:11,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120
[2021-11-13 17:48:11,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:11,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2021-11-13 17:48:11,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:11,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134
[2021-11-13 17:48:11,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:11,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139
[2021-11-13 17:48:11,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:11,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143
[2021-11-13 17:48:11,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:11,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148
[2021-11-13 17:48:11,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:11,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152
[2021-11-13 17:48:11,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:11,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171
[2021-11-13 17:48:11,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:11,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2021-11-13 17:48:11,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:11,680 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked.
[2021-11-13 17:48:11,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:48:11,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562265306]
[2021-11-13 17:48:11,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562265306] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 17:48:11,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 17:48:11,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2021-11-13 17:48:11,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901016504]
[2021-11-13 17:48:11,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 17:48:11,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2021-11-13 17:48:11,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:48:11,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-11-13 17:48:11,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2021-11-13 17:48:11,683 INFO L87 Difference]: Start difference. First operand 806 states and 1101 transitions. Second operand has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 3 states have internal predecessors, (127), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17)
[2021-11-13 17:48:13,792 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:48:15,889 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:48:17,983 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:48:22,125 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:48:23,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:48:23,936 INFO L93 Difference]: Finished difference Result 1919 states and 2684 transitions.
[2021-11-13 17:48:23,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2021-11-13 17:48:23,937 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 3 states have internal predecessors, (127), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 197
[2021-11-13 17:48:23,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:48:23,944 INFO L225 Difference]: With dead ends: 1919
[2021-11-13 17:48:23,944 INFO L226 Difference]: Without dead ends: 1129
[2021-11-13 17:48:23,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132
[2021-11-13 17:48:23,948 INFO L933 BasicCegarLoop]: 591 mSDtfsCounter, 1070 mSDsluCounter, 974 mSDsCounter, 0 mSdLazyCounter, 1167 mSolverCounterSat, 551 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11411.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1112 SdHoareTripleChecker+Valid, 1565 SdHoareTripleChecker+Invalid, 1722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.59ms SdHoareTripleChecker+Time, 551 IncrementalHoareTripleChecker+Valid, 1167 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12078.59ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:48:23,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1112 Valid, 1565 Invalid, 1722 Unknown, 0 Unchecked, 14.59ms Time], IncrementalHoareTripleChecker [551 Valid, 1167 Invalid, 4 Unknown, 0 Unchecked, 12078.59ms Time]
[2021-11-13 17:48:23,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states.
[2021-11-13 17:48:24,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 807.
[2021-11-13 17:48:24,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 645 states have (on average 1.3612403100775194) internal successors, (878), 650 states have internal predecessors, (878), 112 states have call successors, (112), 49 states have call predecessors, (112), 49 states have return successors, (112), 112 states have call predecessors, (112), 111 states have call successors, (112)
[2021-11-13 17:48:24,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1102 transitions.
[2021-11-13 17:48:24,005 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1102 transitions. Word has length 197
[2021-11-13 17:48:24,006 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:48:24,006 INFO L470 AbstractCegarLoop]: Abstraction has 807 states and 1102 transitions.
[2021-11-13 17:48:24,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 3 states have internal predecessors, (127), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17)
[2021-11-13 17:48:24,007 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1102 transitions.
[2021-11-13 17:48:24,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208
[2021-11-13 17:48:24,010 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:48:24,011 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:48:24,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2021-11-13 17:48:24,011 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:48:24,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:48:24,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1201117839, now seen corresponding path program 1 times
[2021-11-13 17:48:24,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:48:24,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535488897]
[2021-11-13 17:48:24,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:48:24,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:48:24,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:24,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-11-13 17:48:24,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:24,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2021-11-13 17:48:24,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:24,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52
[2021-11-13 17:48:24,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:24,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91
[2021-11-13 17:48:24,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:24,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2021-11-13 17:48:24,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:24,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105
[2021-11-13 17:48:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:24,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110
[2021-11-13 17:48:24,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:24,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115
[2021-11-13 17:48:24,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:24,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120
[2021-11-13 17:48:24,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:24,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2021-11-13 17:48:24,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:24,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134
[2021-11-13 17:48:24,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:24,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139
[2021-11-13 17:48:24,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:24,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143
[2021-11-13 17:48:24,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:24,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148
[2021-11-13 17:48:24,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:24,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152
[2021-11-13 17:48:24,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:24,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163
[2021-11-13 17:48:24,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:24,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181
[2021-11-13 17:48:24,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:24,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2021-11-13 17:48:24,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:24,584 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked.
[2021-11-13 17:48:24,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:48:24,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535488897]
[2021-11-13 17:48:24,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535488897] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 17:48:24,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450324422]
[2021-11-13 17:48:24,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:48:24,585 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:48:24,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1f2b12-dfc1-44ce-81b4-3e54e94b80b4/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 17:48:24,588 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1f2b12-dfc1-44ce-81b4-3e54e94b80b4/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 17:48:24,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1f2b12-dfc1-44ce-81b4-3e54e94b80b4/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2021-11-13 17:48:25,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:25,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 4131 conjuncts, 6 conjunts are in the unsatisfiable core
[2021-11-13 17:48:25,959 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 17:48:26,467 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked.
[2021-11-13 17:48:26,467 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 17:48:27,037 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 34 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked.
[2021-11-13 17:48:27,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450324422] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 17:48:27,037 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2021-11-13 17:48:27,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 18
[2021-11-13 17:48:27,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244362287]
[2021-11-13 17:48:27,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2021-11-13 17:48:27,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2021-11-13 17:48:27,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:48:27,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2021-11-13 17:48:27,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306
[2021-11-13 17:48:27,041 INFO L87 Difference]: Start difference. First operand 807 states and 1102 transitions. Second operand has 18 states, 18 states have (on average 13.5) internal successors, (243), 14 states have internal predecessors, (243), 3 states have call successors, (55), 6 states have call predecessors, (55), 2 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44)
[2021-11-13 17:48:29,116 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:48:31,226 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:48:33,312 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:48:43,492 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:48:50,320 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:48:52,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:48:52,894 INFO L93 Difference]: Finished difference Result 5881 states and 8943 transitions.
[2021-11-13 17:48:52,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states.
[2021-11-13 17:48:52,894 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 13.5) internal successors, (243), 14 states have internal predecessors, (243), 3 states have call successors, (55), 6 states have call predecessors, (55), 2 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) Word has length 207
[2021-11-13 17:48:52,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:48:52,929 INFO L225 Difference]: With dead ends: 5881
[2021-11-13 17:48:52,930 INFO L226 Difference]: Without dead ends: 5090
[2021-11-13 17:48:52,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 460 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1108 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=932, Invalid=3100, Unknown=0, NotChecked=0, Total=4032
[2021-11-13 17:48:52,936 INFO L933 BasicCegarLoop]: 755 mSDtfsCounter, 7508 mSDsluCounter, 4236 mSDsCounter, 0 mSdLazyCounter, 6277 mSolverCounterSat, 3532 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22791.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7879 SdHoareTripleChecker+Valid, 4991 SdHoareTripleChecker+Invalid, 9814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 71.82ms SdHoareTripleChecker+Time, 3532 IncrementalHoareTripleChecker+Valid, 6277 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24502.47ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:48:52,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7879 Valid, 4991 Invalid, 9814 Unknown, 0 Unchecked, 71.82ms Time], IncrementalHoareTripleChecker [3532 Valid, 6277 Invalid, 5 Unknown, 0 Unchecked, 24502.47ms Time]
[2021-11-13 17:48:52,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5090 states.
[2021-11-13 17:48:53,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5090 to 934.
[2021-11-13 17:48:53,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 934 states, 771 states have (on average 1.364461738002594) internal successors, (1052), 776 states have internal predecessors, (1052), 113 states have call successors, (113), 49 states have call predecessors, (113), 49 states have return successors, (113), 113 states have call predecessors, (113), 112 states have call successors, (113)
[2021-11-13 17:48:53,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 1278 transitions.
[2021-11-13 17:48:53,081 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 1278 transitions. Word has length 207
[2021-11-13 17:48:53,081 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:48:53,081 INFO L470 AbstractCegarLoop]: Abstraction has 934 states and 1278 transitions.
[2021-11-13 17:48:53,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 13.5) internal successors, (243), 14 states have internal predecessors, (243), 3 states have call successors, (55), 6 states have call predecessors, (55), 2 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44)
[2021-11-13 17:48:53,082 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 1278 transitions.
[2021-11-13 17:48:53,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248
[2021-11-13 17:48:53,087 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:48:53,087 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:48:53,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1f2b12-dfc1-44ce-81b4-3e54e94b80b4/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2021-11-13 17:48:53,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1f2b12-dfc1-44ce-81b4-3e54e94b80b4/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11
[2021-11-13 17:48:53,304 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:48:53,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:48:53,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1247223031, now seen corresponding path program 2 times
[2021-11-13 17:48:53,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:48:53,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304222298]
[2021-11-13 17:48:53,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:48:53,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:48:54,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:54,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-11-13 17:48:54,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:54,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2021-11-13 17:48:54,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:54,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52
[2021-11-13 17:48:54,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:54,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2021-11-13 17:48:54,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:54,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2021-11-13 17:48:54,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:54,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135
[2021-11-13 17:48:54,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:54,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140
[2021-11-13 17:48:54,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:54,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145
[2021-11-13 17:48:54,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:54,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150
[2021-11-13 17:48:54,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:54,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2021-11-13 17:48:54,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:54,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164
[2021-11-13 17:48:54,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:54,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169
[2021-11-13 17:48:54,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:54,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173
[2021-11-13 17:48:54,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:54,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178
[2021-11-13 17:48:54,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:54,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182
[2021-11-13 17:48:54,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:54,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193
[2021-11-13 17:48:54,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:54,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203
[2021-11-13 17:48:54,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:54,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221
[2021-11-13 17:48:54,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:54,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2021-11-13 17:48:54,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:48:54,951 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 8 proven. 235 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked.
[2021-11-13 17:48:54,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:48:54,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304222298]
[2021-11-13 17:48:54,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304222298] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 17:48:54,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987055747]
[2021-11-13 17:48:54,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-11-13 17:48:54,953 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:48:54,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1f2b12-dfc1-44ce-81b4-3e54e94b80b4/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 17:48:54,956 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1f2b12-dfc1-44ce-81b4-3e54e94b80b4/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 17:48:54,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1f2b12-dfc1-44ce-81b4-3e54e94b80b4/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process