./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a82ce6420bb3a33f545de9c61d1c9b088648b3b20e86d3c3faffeeee8d72c08d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:17:46,248 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:17:46,250 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:17:46,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:17:46,284 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:17:46,285 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:17:46,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:17:46,290 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:17:46,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:17:46,293 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:17:46,295 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:17:46,296 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:17:46,297 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:17:46,299 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:17:46,300 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:17:46,302 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:17:46,304 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:17:46,305 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:17:46,307 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:17:46,310 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:17:46,313 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:17:46,314 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:17:46,316 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:17:46,317 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:17:46,321 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:17:46,322 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:17:46,323 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:17:46,324 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:17:46,325 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:17:46,326 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:17:46,326 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:17:46,328 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:17:46,329 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:17:46,330 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:17:46,331 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:17:46,332 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:17:46,333 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:17:46,333 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:17:46,334 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:17:46,335 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:17:46,336 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:17:46,337 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 14:17:46,365 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:17:46,366 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:17:46,367 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:17:46,367 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:17:46,367 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:17:46,367 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:17:46,368 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:17:46,368 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:17:46,368 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:17:46,368 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:17:46,369 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:17:46,369 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:17:46,369 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:17:46,369 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:17:46,369 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:17:46,370 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:17:46,370 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:17:46,371 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:17:46,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:17:46,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:17:46,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:17:46,372 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:17:46,372 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:17:46,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:17:46,372 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:17:46,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:17:46,373 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:17:46,373 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:17:46,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:17:46,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:17:46,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:17:46,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:17:46,374 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:17:46,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:17:46,375 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:17:46,375 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:17:46,375 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:17:46,375 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a82ce6420bb3a33f545de9c61d1c9b088648b3b20e86d3c3faffeeee8d72c08d [2021-11-19 14:17:46,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:17:46,768 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:17:46,772 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:17:46,773 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:17:46,774 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:17:46,775 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i [2021-11-19 14:17:46,852 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/data/be9944dd7/56d3be8019b449efb638852d1e4fe683/FLAG6893aaac5 [2021-11-19 14:17:48,057 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:17:48,058 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i [2021-11-19 14:17:48,131 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/data/be9944dd7/56d3be8019b449efb638852d1e4fe683/FLAG6893aaac5 [2021-11-19 14:17:48,354 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/data/be9944dd7/56d3be8019b449efb638852d1e4fe683 [2021-11-19 14:17:48,357 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:17:48,359 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:17:48,361 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:17:48,361 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:17:48,364 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:17:48,365 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:17:48" (1/1) ... [2021-11-19 14:17:48,367 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6812314a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:17:48, skipping insertion in model container [2021-11-19 14:17:48,367 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:17:48" (1/1) ... [2021-11-19 14:17:48,379 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:17:48,572 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:17:51,042 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:17:51,047 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:17:51,272 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:17:52,546 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i[342349,342362] [2021-11-19 14:17:52,550 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i[342494,342507] [2021-11-19 14:17:52,584 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:17:52,628 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 14:17:52,628 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4ca69e25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:17:52, skipping insertion in model container [2021-11-19 14:17:52,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:17:52,629 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:17:52,631 INFO L158 Benchmark]: Toolchain (without parser) took 4271.78ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 64.3MB in the beginning and 64.5MB in the end (delta: -175.8kB). Peak memory consumption was 40.0MB. Max. memory is 16.1GB. [2021-11-19 14:17:52,632 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 111.1MB. Free memory was 64.2MB in the beginning and 64.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:17:52,633 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4268.72ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 64.3MB in the beginning and 64.5MB in the end (delta: -175.8kB). Peak memory consumption was 40.0MB. Max. memory is 16.1GB. [2021-11-19 14:17:52,636 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 111.1MB. Free memory was 64.2MB in the beginning and 64.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4268.72ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 64.3MB in the beginning and 64.5MB in the end (delta: -175.8kB). Peak memory consumption was 40.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 5989]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a82ce6420bb3a33f545de9c61d1c9b088648b3b20e86d3c3faffeeee8d72c08d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:17:55,190 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:17:55,194 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:17:55,260 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:17:55,261 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:17:55,267 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:17:55,271 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:17:55,276 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:17:55,281 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:17:55,290 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:17:55,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:17:55,294 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:17:55,294 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:17:55,297 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:17:55,300 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:17:55,303 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:17:55,305 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:17:55,307 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:17:55,313 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:17:55,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:17:55,331 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:17:55,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:17:55,337 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:17:55,340 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:17:55,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:17:55,348 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:17:55,349 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:17:55,351 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:17:55,352 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:17:55,353 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:17:55,354 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:17:55,355 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:17:55,357 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:17:55,358 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:17:55,360 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:17:55,361 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:17:55,362 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:17:55,362 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:17:55,362 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:17:55,365 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:17:55,366 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:17:55,372 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 14:17:55,426 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:17:55,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:17:55,428 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:17:55,428 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:17:55,428 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:17:55,429 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:17:55,429 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:17:55,429 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:17:55,430 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:17:55,430 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:17:55,433 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:17:55,433 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:17:55,434 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:17:55,434 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:17:55,434 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:17:55,434 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:17:55,435 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:17:55,435 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:17:55,435 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:17:55,435 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:17:55,436 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:17:55,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:17:55,436 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:17:55,436 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:17:55,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:17:55,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:17:55,437 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:17:55,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:17:55,438 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:17:55,438 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:17:55,438 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:17:55,438 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:17:55,439 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:17:55,439 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a82ce6420bb3a33f545de9c61d1c9b088648b3b20e86d3c3faffeeee8d72c08d [2021-11-19 14:17:55,899 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:17:55,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:17:55,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:17:55,929 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:17:55,932 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:17:55,934 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i [2021-11-19 14:17:56,012 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/data/63f95ea85/c92a6018ce524630b911904e583b8fd5/FLAG67724b350 [2021-11-19 14:17:57,269 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:17:57,270 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i [2021-11-19 14:17:57,340 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/data/63f95ea85/c92a6018ce524630b911904e583b8fd5/FLAG67724b350 [2021-11-19 14:17:57,521 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/data/63f95ea85/c92a6018ce524630b911904e583b8fd5 [2021-11-19 14:17:57,524 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:17:57,526 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:17:57,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:17:57,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:17:57,541 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:17:57,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:17:57" (1/1) ... [2021-11-19 14:17:57,543 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c9282c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:17:57, skipping insertion in model container [2021-11-19 14:17:57,543 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:17:57" (1/1) ... [2021-11-19 14:17:57,552 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:17:57,768 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:18:01,464 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i[342349,342362] [2021-11-19 14:18:01,468 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i[342494,342507] [2021-11-19 14:18:01,498 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:18:01,554 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:18:01,634 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:18:02,111 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i[342349,342362] [2021-11-19 14:18:02,112 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i[342494,342507] [2021-11-19 14:18:02,123 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:18:02,180 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:18:02,670 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i[342349,342362] [2021-11-19 14:18:02,671 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i[342494,342507] [2021-11-19 14:18:02,679 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:18:03,056 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:18:03,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:18:03 WrapperNode [2021-11-19 14:18:03,072 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:18:03,074 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:18:03,074 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:18:03,074 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:18:03,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:18:03" (1/1) ... [2021-11-19 14:18:03,295 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:18:03" (1/1) ... [2021-11-19 14:18:03,560 INFO L137 Inliner]: procedures = 469, calls = 2192, calls flagged for inlining = 223, calls inlined = 189, statements flattened = 4887 [2021-11-19 14:18:03,561 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:18:03,562 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:18:03,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:18:03,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:18:03,573 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:18:03" (1/1) ... [2021-11-19 14:18:03,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:18:03" (1/1) ... [2021-11-19 14:18:03,646 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:18:03" (1/1) ... [2021-11-19 14:18:03,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:18:03" (1/1) ... [2021-11-19 14:18:03,807 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:18:03" (1/1) ... [2021-11-19 14:18:03,854 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:18:03" (1/1) ... [2021-11-19 14:18:03,900 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:18:03" (1/1) ... [2021-11-19 14:18:03,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:18:03,951 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:18:03,952 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:18:03,952 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:18:03,953 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:18:03" (1/1) ... [2021-11-19 14:18:03,961 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:18:03,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:18:03,990 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:18:04,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:18:04,051 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-19 14:18:04,052 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-19 14:18:04,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-19 14:18:04,052 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-19 14:18:04,053 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-19 14:18:04,053 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-19 14:18:04,053 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-19 14:18:04,053 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-19 14:18:04,053 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-19 14:18:04,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-19 14:18:04,054 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-19 14:18:04,054 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-19 14:18:04,054 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_wakeup [2021-11-19 14:18:04,054 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_wakeup [2021-11-19 14:18:04,055 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_wait_status [2021-11-19 14:18:04,055 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_wait_status [2021-11-19 14:18:04,055 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_set_rx_mode [2021-11-19 14:18:04,055 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_set_rx_mode [2021-11-19 14:18:04,056 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-19 14:18:04,056 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-19 14:18:04,056 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-19 14:18:04,056 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-19 14:18:04,056 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-19 14:18:04,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-19 14:18:04,057 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-19 14:18:04,057 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-19 14:18:04,058 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-19 14:18:04,058 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-19 14:18:04,058 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-19 14:18:04,058 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-19 14:18:04,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-19 14:18:04,059 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-19 14:18:04,059 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-19 14:18:04,059 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-19 14:18:04,060 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-19 14:18:04,060 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-19 14:18:04,060 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-19 14:18:04,060 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-19 14:18:04,061 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-19 14:18:04,061 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-19 14:18:04,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-19 14:18:04,061 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-19 14:18:04,061 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-19 14:18:04,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:18:04,062 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_clean_tx [2021-11-19 14:18:04,062 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_clean_tx [2021-11-19 14:18:04,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:18:04,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 14:18:04,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 14:18:04,065 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_stop_runtime [2021-11-19 14:18:04,065 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_stop_runtime [2021-11-19 14:18:04,066 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-19 14:18:04,066 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-19 14:18:04,067 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_resume [2021-11-19 14:18:04,067 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_resume [2021-11-19 14:18:04,067 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_inc_rxfree_index [2021-11-19 14:18:04,067 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_inc_rxfree_index [2021-11-19 14:18:04,067 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_remove_one [2021-11-19 14:18:04,068 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_remove_one [2021-11-19 14:18:04,069 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-19 14:18:04,069 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-19 14:18:04,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-19 14:18:04,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-19 14:18:04,069 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-19 14:18:04,140 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-19 14:18:04,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-19 14:18:04,140 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-19 14:18:04,140 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-19 14:18:04,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-19 14:18:04,140 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-19 14:18:04,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-19 14:18:04,141 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-19 14:18:04,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-19 14:18:04,141 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2021-11-19 14:18:04,141 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2021-11-19 14:18:04,141 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-19 14:18:04,141 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-19 14:18:04,142 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-19 14:18:04,142 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-19 14:18:04,142 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_close [2021-11-19 14:18:04,142 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_close [2021-11-19 14:18:04,142 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_tx_timeout [2021-11-19 14:18:04,142 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_tx_timeout [2021-11-19 14:18:04,142 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_alloc_rx_skb [2021-11-19 14:18:04,142 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_alloc_rx_skb [2021-11-19 14:18:04,143 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_issue_command [2021-11-19 14:18:04,143 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_issue_command [2021-11-19 14:18:04,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:18:04,143 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-19 14:18:04,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-19 14:18:04,143 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-19 14:18:04,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-19 14:18:04,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:18:04,144 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_process_response [2021-11-19 14:18:04,144 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_process_response [2021-11-19 14:18:04,144 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-19 14:18:04,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-19 14:18:04,144 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-19 14:18:04,144 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-19 14:18:04,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:18:04,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-19 14:18:04,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-19 14:18:04,145 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 14:18:04,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 14:18:04,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-19 14:18:04,145 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-19 14:18:04,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-19 14:18:04,145 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-19 14:18:04,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-19 14:18:04,146 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_gso [2021-11-19 14:18:04,146 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_gso [2021-11-19 14:18:04,146 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_num_free_tx [2021-11-19 14:18:04,146 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_num_free_tx [2021-11-19 14:18:04,146 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2021-11-19 14:18:04,148 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2021-11-19 14:18:04,149 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_reset [2021-11-19 14:18:04,149 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_reset [2021-11-19 14:18:04,150 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-19 14:18:04,150 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-19 14:18:04,151 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-19 14:18:04,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-19 14:18:04,152 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_inc_cmd_index [2021-11-19 14:18:04,152 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_inc_cmd_index [2021-11-19 14:18:04,152 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-19 14:18:04,152 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-19 14:18:04,152 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_fill_free_ring [2021-11-19 14:18:04,153 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_fill_free_ring [2021-11-19 14:18:04,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-19 14:18:04,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:18:04,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:18:04,153 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-11-19 14:18:04,154 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-11-19 14:18:04,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 14:18:04,154 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-19 14:18:04,154 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-19 14:18:04,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 14:18:04,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 14:18:04,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-19 14:18:04,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-19 14:18:04,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-19 14:18:04,155 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-19 14:18:04,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-19 14:18:04,155 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-19 14:18:04,156 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-19 14:18:04,156 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-19 14:18:04,156 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-19 14:18:04,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 14:18:04,156 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 14:18:04,156 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-19 14:18:04,157 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-19 14:18:04,157 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-19 14:18:04,157 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-19 14:18:04,163 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_wait_interrupt [2021-11-19 14:18:04,171 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_wait_interrupt [2021-11-19 14:18:04,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:18:04,171 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-19 14:18:04,171 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-19 14:18:04,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:18:04,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 14:18:04,172 INFO L130 BoogieDeclarations]: Found specification of procedure pci_clear_mwi [2021-11-19 14:18:04,172 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_clear_mwi [2021-11-19 14:18:04,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 14:18:04,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-19 14:18:04,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 14:18:04,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 14:18:04,173 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_boot_3XP [2021-11-19 14:18:04,173 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_boot_3XP [2021-11-19 14:18:04,173 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-19 14:18:04,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-19 14:18:04,174 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-19 14:18:04,174 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-19 14:18:04,174 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-19 14:18:04,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-19 14:18:04,174 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2021-11-19 14:18:04,174 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2021-11-19 14:18:04,175 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-19 14:18:04,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-19 14:18:04,235 INFO L130 BoogieDeclarations]: Found specification of procedure pci_restore_state [2021-11-19 14:18:04,235 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_restore_state [2021-11-19 14:18:04,236 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-19 14:18:04,236 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-19 14:18:04,236 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-19 14:18:04,236 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-19 14:18:04,236 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_free_rx_rings [2021-11-19 14:18:04,236 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_free_rx_rings [2021-11-19 14:18:04,236 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-19 14:18:04,236 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-19 14:18:04,236 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_do_get_stats [2021-11-19 14:18:04,236 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_do_get_stats [2021-11-19 14:18:04,237 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_num_free [2021-11-19 14:18:04,237 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_num_free [2021-11-19 14:18:04,237 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_sleep [2021-11-19 14:18:04,237 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_sleep [2021-11-19 14:18:04,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-19 14:18:04,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-19 14:18:04,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-19 14:18:04,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-19 14:18:04,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-19 14:18:04,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-19 14:18:04,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_84 [2021-11-19 14:18:04,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_84 [2021-11-19 14:18:04,238 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_init_rings [2021-11-19 14:18:04,238 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_init_rings [2021-11-19 14:18:04,238 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-19 14:18:04,238 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-19 14:18:04,238 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_open [2021-11-19 14:18:04,238 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_open [2021-11-19 14:18:04,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-19 14:18:04,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-19 14:18:04,239 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_start_runtime [2021-11-19 14:18:04,239 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_start_runtime [2021-11-19 14:18:04,239 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-19 14:18:04,239 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-19 14:18:04,239 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-19 14:18:04,239 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-19 14:18:04,239 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_inc_index [2021-11-19 14:18:04,239 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_inc_index [2021-11-19 14:18:04,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-19 14:18:04,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-19 14:18:05,324 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:18:05,332 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:18:05,465 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-19 14:19:01,017 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-19 14:19:01,223 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:19:01,249 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:19:01,249 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 14:19:01,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:19:01 BoogieIcfgContainer [2021-11-19 14:19:01,255 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:19:01,257 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:19:01,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:19:01,261 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:19:01,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:17:57" (1/3) ... [2021-11-19 14:19:01,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d7e95cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:19:01, skipping insertion in model container [2021-11-19 14:19:01,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:18:03" (2/3) ... [2021-11-19 14:19:01,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d7e95cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:19:01, skipping insertion in model container [2021-11-19 14:19:01,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:19:01" (3/3) ... [2021-11-19 14:19:01,265 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i [2021-11-19 14:19:01,271 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:19:01,271 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:19:01,339 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:19:01,347 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=FINITE_AUTOMATA, 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 [2021-11-19 14:19:01,347 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:19:01,418 INFO L276 IsEmpty]: Start isEmpty. Operand has 1745 states, 1179 states have (on average 1.2790500424088211) internal successors, (1508), 1201 states have internal predecessors, (1508), 472 states have call successors, (472), 94 states have call predecessors, (472), 93 states have return successors, (467), 461 states have call predecessors, (467), 467 states have call successors, (467) [2021-11-19 14:19:01,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-11-19 14:19:01,474 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:19:01,476 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:19:01,476 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:19:01,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:19:01,486 INFO L85 PathProgramCache]: Analyzing trace with hash -480123427, now seen corresponding path program 1 times [2021-11-19 14:19:01,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:19:01,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2139513385] [2021-11-19 14:19:01,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:19:01,513 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:19:01,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:19:01,520 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:19:01,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:19:03,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:19:03,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 1840 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:19:03,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:19:04,831 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2021-11-19 14:19:04,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:19:05,706 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-11-19 14:19:05,707 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:19:05,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2139513385] [2021-11-19 14:19:05,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2139513385] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:19:05,714 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:19:05,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:19:05,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237797771] [2021-11-19 14:19:05,719 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:19:05,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:19:05,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:19:05,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:19:05,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:19:05,785 INFO L87 Difference]: Start difference. First operand has 1745 states, 1179 states have (on average 1.2790500424088211) internal successors, (1508), 1201 states have internal predecessors, (1508), 472 states have call successors, (472), 94 states have call predecessors, (472), 93 states have return successors, (467), 461 states have call predecessors, (467), 467 states have call successors, (467) Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 4 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2021-11-19 14:19:08,054 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:19:16,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:19:16,865 INFO L93 Difference]: Finished difference Result 5704 states and 8040 transitions. [2021-11-19 14:19:16,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:19:16,869 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 4 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) Word has length 197 [2021-11-19 14:19:16,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:19:16,934 INFO L225 Difference]: With dead ends: 5704 [2021-11-19 14:19:16,934 INFO L226 Difference]: Without dead ends: 3882 [2021-11-19 14:19:16,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:19:16,962 INFO L933 BasicCegarLoop]: 3061 mSDtfsCounter, 4807 mSDsluCounter, 3003 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 568 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4807 SdHoareTripleChecker+Valid, 6064 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 568 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:19:16,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4807 Valid, 6064 Invalid, 1588 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [568 Valid, 1019 Invalid, 1 Unknown, 0 Unchecked, 10.3s Time] [2021-11-19 14:19:16,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3882 states. [2021-11-19 14:19:17,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3882 to 3876. [2021-11-19 14:19:17,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3876 states, 2687 states have (on average 1.2754000744324525) internal successors, (3427), 2732 states have internal predecessors, (3427), 964 states have call successors, (964), 224 states have call predecessors, (964), 224 states have return successors, (964), 952 states have call predecessors, (964), 964 states have call successors, (964) [2021-11-19 14:19:17,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3876 states to 3876 states and 5355 transitions. [2021-11-19 14:19:17,495 INFO L78 Accepts]: Start accepts. Automaton has 3876 states and 5355 transitions. Word has length 197 [2021-11-19 14:19:17,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:19:17,501 INFO L470 AbstractCegarLoop]: Abstraction has 3876 states and 5355 transitions. [2021-11-19 14:19:17,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 4 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2021-11-19 14:19:17,502 INFO L276 IsEmpty]: Start isEmpty. Operand 3876 states and 5355 transitions. [2021-11-19 14:19:17,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-19 14:19:17,534 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:19:17,536 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:19:17,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:19:17,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:19:17,752 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:19:17,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:19:17,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1020957030, now seen corresponding path program 1 times [2021-11-19 14:19:17,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:19:17,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2054926994] [2021-11-19 14:19:17,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:19:17,756 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:19:17,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:19:17,760 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:19:17,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:19:19,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:19:19,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 1877 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:19:19,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:19:20,390 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2021-11-19 14:19:20,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:19:21,105 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2021-11-19 14:19:21,106 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:19:21,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2054926994] [2021-11-19 14:19:21,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2054926994] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:19:21,106 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:19:21,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:19:21,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887657132] [2021-11-19 14:19:21,107 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:19:21,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:19:21,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:19:21,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:19:21,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:19:21,111 INFO L87 Difference]: Start difference. First operand 3876 states and 5355 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 3 states have call successors, (49), 3 states have call predecessors, (49), 3 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2021-11-19 14:19:23,270 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:19:23,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:19:23,958 INFO L93 Difference]: Finished difference Result 10041 states and 13862 transitions. [2021-11-19 14:19:23,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:19:23,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 3 states have call successors, (49), 3 states have call predecessors, (49), 3 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 217 [2021-11-19 14:19:23,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:19:24,035 INFO L225 Difference]: With dead ends: 10041 [2021-11-19 14:19:24,036 INFO L226 Difference]: Without dead ends: 6186 [2021-11-19 14:19:24,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:19:24,065 INFO L933 BasicCegarLoop]: 2771 mSDtfsCounter, 1975 mSDsluCounter, 2285 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1975 SdHoareTripleChecker+Valid, 5056 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:19:24,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1975 Valid, 5056 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 57 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2021-11-19 14:19:24,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6186 states. [2021-11-19 14:19:24,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6186 to 6182. [2021-11-19 14:19:24,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6182 states, 4250 states have (on average 1.2703529411764707) internal successors, (5399), 4323 states have internal predecessors, (5399), 1559 states have call successors, (1559), 373 states have call predecessors, (1559), 372 states have return successors, (1560), 1535 states have call predecessors, (1560), 1559 states have call successors, (1560) [2021-11-19 14:19:24,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6182 states to 6182 states and 8518 transitions. [2021-11-19 14:19:24,631 INFO L78 Accepts]: Start accepts. Automaton has 6182 states and 8518 transitions. Word has length 217 [2021-11-19 14:19:24,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:19:24,634 INFO L470 AbstractCegarLoop]: Abstraction has 6182 states and 8518 transitions. [2021-11-19 14:19:24,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 3 states have call successors, (49), 3 states have call predecessors, (49), 3 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2021-11-19 14:19:24,635 INFO L276 IsEmpty]: Start isEmpty. Operand 6182 states and 8518 transitions. [2021-11-19 14:19:24,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2021-11-19 14:19:24,647 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:19:24,648 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 8, 8, 8, 8, 8, 8, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:19:24,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:19:24,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:19:24,863 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:19:24,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:19:24,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1306383226, now seen corresponding path program 1 times [2021-11-19 14:19:24,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:19:24,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1942617741] [2021-11-19 14:19:24,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:19:24,867 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:19:24,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:19:24,871 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:19:24,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:19:26,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:19:26,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 1990 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:19:26,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:19:27,722 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2021-11-19 14:19:27,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:19:28,536 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2021-11-19 14:19:28,536 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:19:28,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1942617741] [2021-11-19 14:19:28,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1942617741] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:19:28,537 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:19:28,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:19:28,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402897965] [2021-11-19 14:19:28,538 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:19:28,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:19:28,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:19:28,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:19:28,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:19:28,540 INFO L87 Difference]: Start difference. First operand 6182 states and 8518 transitions. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 4 states have call successors, (52), 3 states have call predecessors, (52), 3 states have return successors, (46), 4 states have call predecessors, (46), 4 states have call successors, (46) [2021-11-19 14:19:30,691 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:19:37,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:19:37,793 INFO L93 Difference]: Finished difference Result 17025 states and 23424 transitions. [2021-11-19 14:19:37,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:19:37,795 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 4 states have call successors, (52), 3 states have call predecessors, (52), 3 states have return successors, (46), 4 states have call predecessors, (46), 4 states have call successors, (46) Word has length 260 [2021-11-19 14:19:37,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:19:37,919 INFO L225 Difference]: With dead ends: 17025 [2021-11-19 14:19:37,920 INFO L226 Difference]: Without dead ends: 10864 [2021-11-19 14:19:37,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 516 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:19:37,972 INFO L933 BasicCegarLoop]: 4349 mSDtfsCounter, 3735 mSDsluCounter, 3771 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 38 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3735 SdHoareTripleChecker+Valid, 8120 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:19:37,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3735 Valid, 8120 Invalid, 1028 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [38 Valid, 989 Invalid, 1 Unknown, 0 Unchecked, 8.4s Time] [2021-11-19 14:19:37,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10864 states. [2021-11-19 14:19:38,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10864 to 10856. [2021-11-19 14:19:38,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10856 states, 7502 states have (on average 1.2695281258331113) internal successors, (9524), 7624 states have internal predecessors, (9524), 2687 states have call successors, (2687), 667 states have call predecessors, (2687), 666 states have return successors, (2688), 2648 states have call predecessors, (2688), 2687 states have call successors, (2688) [2021-11-19 14:19:38,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10856 states to 10856 states and 14899 transitions. [2021-11-19 14:19:38,980 INFO L78 Accepts]: Start accepts. Automaton has 10856 states and 14899 transitions. Word has length 260 [2021-11-19 14:19:38,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:19:38,982 INFO L470 AbstractCegarLoop]: Abstraction has 10856 states and 14899 transitions. [2021-11-19 14:19:38,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 4 states have call successors, (52), 3 states have call predecessors, (52), 3 states have return successors, (46), 4 states have call predecessors, (46), 4 states have call successors, (46) [2021-11-19 14:19:38,984 INFO L276 IsEmpty]: Start isEmpty. Operand 10856 states and 14899 transitions. [2021-11-19 14:19:39,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2021-11-19 14:19:39,002 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:19:39,004 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:19:39,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:19:39,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:19:39,221 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:19:39,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:19:39,222 INFO L85 PathProgramCache]: Analyzing trace with hash 483514323, now seen corresponding path program 1 times [2021-11-19 14:19:39,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:19:39,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [605835001] [2021-11-19 14:19:39,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:19:39,225 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:19:39,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:19:39,231 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:19:39,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:19:41,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:19:41,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 2176 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:19:41,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:19:42,727 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2021-11-19 14:19:42,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:19:43,764 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2021-11-19 14:19:43,765 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:19:43,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [605835001] [2021-11-19 14:19:43,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [605835001] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:19:43,765 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:19:43,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:19:43,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675236639] [2021-11-19 14:19:43,766 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:19:43,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:19:43,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:19:43,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:19:43,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:19:43,770 INFO L87 Difference]: Start difference. First operand 10856 states and 14899 transitions. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 4 states have call successors, (64), 3 states have call predecessors, (64), 3 states have return successors, (57), 4 states have call predecessors, (57), 4 states have call successors, (57) [2021-11-19 14:19:45,978 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:19:53,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:19:53,498 INFO L93 Difference]: Finished difference Result 24560 states and 33657 transitions. [2021-11-19 14:19:53,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:19:53,503 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 4 states have call successors, (64), 3 states have call predecessors, (64), 3 states have return successors, (57), 4 states have call predecessors, (57), 4 states have call successors, (57) Word has length 345 [2021-11-19 14:19:53,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:19:53,629 INFO L225 Difference]: With dead ends: 24560 [2021-11-19 14:19:53,629 INFO L226 Difference]: Without dead ends: 13725 [2021-11-19 14:19:53,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 688 GetRequests, 686 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:19:53,707 INFO L933 BasicCegarLoop]: 4388 mSDtfsCounter, 3784 mSDsluCounter, 3104 mSDsCounter, 0 mSdLazyCounter, 977 mSolverCounterSat, 292 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3784 SdHoareTripleChecker+Valid, 7492 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 977 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:19:53,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3784 Valid, 7492 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 977 Invalid, 1 Unknown, 0 Unchecked, 9.0s Time] [2021-11-19 14:19:53,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13725 states. [2021-11-19 14:19:54,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13725 to 13717. [2021-11-19 14:19:54,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13717 states, 9437 states have (on average 1.2654445268623504) internal successors, (11942), 9592 states have internal predecessors, (11942), 3407 states have call successors, (3407), 874 states have call predecessors, (3407), 872 states have return successors, (3408), 3358 states have call predecessors, (3408), 3407 states have call successors, (3408) [2021-11-19 14:19:54,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13717 states to 13717 states and 18757 transitions. [2021-11-19 14:19:54,788 INFO L78 Accepts]: Start accepts. Automaton has 13717 states and 18757 transitions. Word has length 345 [2021-11-19 14:19:54,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:19:54,789 INFO L470 AbstractCegarLoop]: Abstraction has 13717 states and 18757 transitions. [2021-11-19 14:19:54,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 4 states have call successors, (64), 3 states have call predecessors, (64), 3 states have return successors, (57), 4 states have call predecessors, (57), 4 states have call successors, (57) [2021-11-19 14:19:54,790 INFO L276 IsEmpty]: Start isEmpty. Operand 13717 states and 18757 transitions. [2021-11-19 14:19:54,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2021-11-19 14:19:54,809 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:19:54,810 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:19:54,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:19:55,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:19:55,028 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:19:55,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:19:55,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1898367330, now seen corresponding path program 1 times [2021-11-19 14:19:55,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:19:55,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1778805852] [2021-11-19 14:19:55,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:19:55,031 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:19:55,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:19:55,032 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:19:55,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:19:56,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:19:56,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 2164 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:19:56,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:19:58,083 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 165 proven. 0 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2021-11-19 14:19:58,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:19:59,087 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 654 trivial. 0 not checked. [2021-11-19 14:19:59,087 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:19:59,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1778805852] [2021-11-19 14:19:59,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1778805852] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:19:59,088 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:19:59,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:19:59,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514868527] [2021-11-19 14:19:59,092 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:19:59,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:19:59,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:19:59,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:19:59,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:19:59,095 INFO L87 Difference]: Start difference. First operand 13717 states and 18757 transitions. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 4 states have call successors, (61), 3 states have call predecessors, (61), 3 states have return successors, (55), 4 states have call predecessors, (55), 4 states have call successors, (55) [2021-11-19 14:20:01,251 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:20:06,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:20:06,990 INFO L93 Difference]: Finished difference Result 30566 states and 41771 transitions. [2021-11-19 14:20:06,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:20:06,991 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 4 states have call successors, (61), 3 states have call predecessors, (61), 3 states have return successors, (55), 4 states have call predecessors, (55), 4 states have call successors, (55) Word has length 361 [2021-11-19 14:20:06,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:20:07,095 INFO L225 Difference]: With dead ends: 30566 [2021-11-19 14:20:07,095 INFO L226 Difference]: Without dead ends: 16870 [2021-11-19 14:20:07,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 720 GetRequests, 718 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:20:07,150 INFO L933 BasicCegarLoop]: 4189 mSDtfsCounter, 4215 mSDsluCounter, 2719 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 450 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4215 SdHoareTripleChecker+Valid, 6908 SdHoareTripleChecker+Invalid, 1321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:20:07,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4215 Valid, 6908 Invalid, 1321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 870 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2021-11-19 14:20:07,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16870 states. [2021-11-19 14:20:08,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16870 to 16862. [2021-11-19 14:20:08,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16862 states, 11628 states have (on average 1.2645338837289302) internal successors, (14704), 11816 states have internal predecessors, (14704), 4152 states have call successors, (4152), 1083 states have call predecessors, (4152), 1081 states have return successors, (4153), 4092 states have call predecessors, (4153), 4152 states have call successors, (4153) [2021-11-19 14:20:08,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16862 states to 16862 states and 23009 transitions. [2021-11-19 14:20:08,531 INFO L78 Accepts]: Start accepts. Automaton has 16862 states and 23009 transitions. Word has length 361 [2021-11-19 14:20:08,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:20:08,533 INFO L470 AbstractCegarLoop]: Abstraction has 16862 states and 23009 transitions. [2021-11-19 14:20:08,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 4 states have call successors, (61), 3 states have call predecessors, (61), 3 states have return successors, (55), 4 states have call predecessors, (55), 4 states have call successors, (55) [2021-11-19 14:20:08,533 INFO L276 IsEmpty]: Start isEmpty. Operand 16862 states and 23009 transitions. [2021-11-19 14:20:08,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2021-11-19 14:20:08,560 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:20:08,561 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 10, 10, 10, 9, 9, 9, 9, 9, 9, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:20:08,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:20:08,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:20:08,776 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:20:08,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:20:08,777 INFO L85 PathProgramCache]: Analyzing trace with hash 647079952, now seen corresponding path program 1 times [2021-11-19 14:20:08,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:20:08,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1715908998] [2021-11-19 14:20:08,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:20:08,781 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:20:08,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:20:08,785 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:20:08,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:20:10,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:20:10,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 2373 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:20:10,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:20:12,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 239 proven. 0 refuted. 0 times theorem prover too weak. 850 trivial. 0 not checked. [2021-11-19 14:20:12,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:20:13,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 1009 trivial. 0 not checked. [2021-11-19 14:20:13,114 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:20:13,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1715908998] [2021-11-19 14:20:13,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1715908998] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:20:13,115 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:20:13,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:20:13,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890268383] [2021-11-19 14:20:13,115 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:20:13,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:20:13,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:20:13,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:20:13,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:20:13,117 INFO L87 Difference]: Start difference. First operand 16862 states and 23009 transitions. Second operand has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 4 states have call successors, (67), 3 states have call predecessors, (67), 3 states have return successors, (61), 4 states have call predecessors, (61), 4 states have call successors, (61) [2021-11-19 14:20:15,263 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:20:21,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:20:21,288 INFO L93 Difference]: Finished difference Result 36115 states and 49277 transitions. [2021-11-19 14:20:21,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:20:21,289 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 4 states have call successors, (67), 3 states have call predecessors, (67), 3 states have return successors, (61), 4 states have call predecessors, (61), 4 states have call successors, (61) Word has length 446 [2021-11-19 14:20:21,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:20:21,405 INFO L225 Difference]: With dead ends: 36115 [2021-11-19 14:20:21,405 INFO L226 Difference]: Without dead ends: 19274 [2021-11-19 14:20:21,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 890 GetRequests, 888 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:20:21,484 INFO L933 BasicCegarLoop]: 3766 mSDtfsCounter, 3768 mSDsluCounter, 3152 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3768 SdHoareTripleChecker+Valid, 6918 SdHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:20:21,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3768 Valid, 6918 Invalid, 1035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 999 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2021-11-19 14:20:21,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19274 states. [2021-11-19 14:20:22,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19274 to 19266. [2021-11-19 14:20:22,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19266 states, 13340 states have (on average 1.2650674662668666) internal successors, (16876), 13554 states have internal predecessors, (16876), 4698 states have call successors, (4698), 1229 states have call predecessors, (4698), 1227 states have return successors, (4699), 4630 states have call predecessors, (4699), 4698 states have call successors, (4699) [2021-11-19 14:20:23,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19266 states to 19266 states and 26273 transitions. [2021-11-19 14:20:23,019 INFO L78 Accepts]: Start accepts. Automaton has 19266 states and 26273 transitions. Word has length 446 [2021-11-19 14:20:23,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:20:23,021 INFO L470 AbstractCegarLoop]: Abstraction has 19266 states and 26273 transitions. [2021-11-19 14:20:23,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 4 states have call successors, (67), 3 states have call predecessors, (67), 3 states have return successors, (61), 4 states have call predecessors, (61), 4 states have call successors, (61) [2021-11-19 14:20:23,021 INFO L276 IsEmpty]: Start isEmpty. Operand 19266 states and 26273 transitions. [2021-11-19 14:20:23,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2021-11-19 14:20:23,043 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:20:23,044 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 11, 11, 11, 9, 9, 9, 9, 9, 9, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:20:23,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:20:23,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:20:23,269 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:20:23,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:20:23,270 INFO L85 PathProgramCache]: Analyzing trace with hash -941715393, now seen corresponding path program 1 times [2021-11-19 14:20:23,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:20:23,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1183652412] [2021-11-19 14:20:23,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:20:23,273 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:20:23,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:20:23,274 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:20:23,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:20:25,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:20:25,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 2381 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:20:25,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:20:26,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1078 backedges. 231 proven. 0 refuted. 0 times theorem prover too weak. 847 trivial. 0 not checked. [2021-11-19 14:20:26,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:20:27,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1078 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 1002 trivial. 0 not checked. [2021-11-19 14:20:27,828 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:20:27,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1183652412] [2021-11-19 14:20:27,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1183652412] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:20:27,828 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:20:27,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:20:27,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903963016] [2021-11-19 14:20:27,829 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:20:27,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:20:27,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:20:27,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:20:27,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:20:27,832 INFO L87 Difference]: Start difference. First operand 19266 states and 26273 transitions. Second operand has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 4 states have call successors, (68), 3 states have call predecessors, (68), 3 states have return successors, (62), 4 states have call predecessors, (62), 4 states have call successors, (62) [2021-11-19 14:20:29,984 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:20:35,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:20:35,742 INFO L93 Difference]: Finished difference Result 40909 states and 55783 transitions. [2021-11-19 14:20:35,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:20:35,744 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 4 states have call successors, (68), 3 states have call predecessors, (68), 3 states have return successors, (62), 4 states have call predecessors, (62), 4 states have call successors, (62) Word has length 450 [2021-11-19 14:20:35,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:20:35,951 INFO L225 Difference]: With dead ends: 40909 [2021-11-19 14:20:35,951 INFO L226 Difference]: Without dead ends: 21664 [2021-11-19 14:20:36,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 898 GetRequests, 896 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:20:36,024 INFO L933 BasicCegarLoop]: 4055 mSDtfsCounter, 3779 mSDsluCounter, 3142 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 33 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3779 SdHoareTripleChecker+Valid, 7197 SdHoareTripleChecker+Invalid, 1034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:20:36,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3779 Valid, 7197 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1000 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2021-11-19 14:20:36,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21664 states. [2021-11-19 14:20:37,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21664 to 21656. [2021-11-19 14:20:37,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21656 states, 15038 states have (on average 1.26506184333023) internal successors, (19024), 15278 states have internal predecessors, (19024), 5244 states have call successors, (5244), 1375 states have call predecessors, (5244), 1373 states have return successors, (5245), 5168 states have call predecessors, (5245), 5244 states have call successors, (5245) [2021-11-19 14:20:38,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21656 states to 21656 states and 29513 transitions. [2021-11-19 14:20:38,115 INFO L78 Accepts]: Start accepts. Automaton has 21656 states and 29513 transitions. Word has length 450 [2021-11-19 14:20:38,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:20:38,116 INFO L470 AbstractCegarLoop]: Abstraction has 21656 states and 29513 transitions. [2021-11-19 14:20:38,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 4 states have call successors, (68), 3 states have call predecessors, (68), 3 states have return successors, (62), 4 states have call predecessors, (62), 4 states have call successors, (62) [2021-11-19 14:20:38,117 INFO L276 IsEmpty]: Start isEmpty. Operand 21656 states and 29513 transitions. [2021-11-19 14:20:38,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2021-11-19 14:20:38,133 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:20:38,134 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 11, 11, 11, 9, 9, 9, 9, 9, 9, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:20:38,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:20:38,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:20:38,349 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:20:38,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:20:38,350 INFO L85 PathProgramCache]: Analyzing trace with hash 555672794, now seen corresponding path program 1 times [2021-11-19 14:20:38,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:20:38,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [452897262] [2021-11-19 14:20:38,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:20:38,353 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:20:38,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:20:38,355 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:20:38,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:20:40,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:20:40,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 2384 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 14:20:40,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:20:42,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1137 backedges. 336 proven. 0 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2021-11-19 14:20:42,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:20:45,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1137 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 1015 trivial. 0 not checked. [2021-11-19 14:20:45,502 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:20:45,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [452897262] [2021-11-19 14:20:45,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [452897262] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:20:45,502 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:20:45,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-11-19 14:20:45,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378468989] [2021-11-19 14:20:45,503 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:20:45,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-19 14:20:45,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:20:45,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-19 14:20:45,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=490, Unknown=0, NotChecked=0, Total=552 [2021-11-19 14:20:45,506 INFO L87 Difference]: Start difference. First operand 21656 states and 29513 transitions. Second operand has 24 states, 22 states have (on average 13.0) internal successors, (286), 22 states have internal predecessors, (286), 10 states have call successors, (74), 3 states have call predecessors, (74), 7 states have return successors, (68), 10 states have call predecessors, (68), 10 states have call successors, (68) [2021-11-19 14:20:47,664 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:20:49,673 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:21:43,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:21:43,052 INFO L93 Difference]: Finished difference Result 67579 states and 92863 transitions. [2021-11-19 14:21:43,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-11-19 14:21:43,053 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 13.0) internal successors, (286), 22 states have internal predecessors, (286), 10 states have call successors, (74), 3 states have call predecessors, (74), 7 states have return successors, (68), 10 states have call predecessors, (68), 10 states have call successors, (68) Word has length 455 [2021-11-19 14:21:43,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:21:43,255 INFO L225 Difference]: With dead ends: 67579 [2021-11-19 14:21:43,255 INFO L226 Difference]: Without dead ends: 45880 [2021-11-19 14:21:43,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 964 GetRequests, 893 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1285 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=759, Invalid=4497, Unknown=0, NotChecked=0, Total=5256 [2021-11-19 14:21:43,354 INFO L933 BasicCegarLoop]: 6347 mSDtfsCounter, 11172 mSDsluCounter, 88370 mSDsCounter, 0 mSdLazyCounter, 14289 mSolverCounterSat, 2460 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11388 SdHoareTripleChecker+Valid, 94717 SdHoareTripleChecker+Invalid, 16751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 2460 IncrementalHoareTripleChecker+Valid, 14289 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:21:43,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11388 Valid, 94717 Invalid, 16751 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [2460 Valid, 14289 Invalid, 2 Unknown, 0 Unchecked, 50.4s Time] [2021-11-19 14:21:43,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45880 states. [2021-11-19 14:21:45,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45880 to 30172. [2021-11-19 14:21:45,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30172 states, 20987 states have (on average 1.2645447181588603) internal successors, (26539), 21330 states have internal predecessors, (26539), 7293 states have call successors, (7293), 1893 states have call predecessors, (7293), 1891 states have return successors, (7294), 7183 states have call predecessors, (7294), 7293 states have call successors, (7294) [2021-11-19 14:21:46,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30172 states to 30172 states and 41126 transitions. [2021-11-19 14:21:46,030 INFO L78 Accepts]: Start accepts. Automaton has 30172 states and 41126 transitions. Word has length 455 [2021-11-19 14:21:46,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:21:46,031 INFO L470 AbstractCegarLoop]: Abstraction has 30172 states and 41126 transitions. [2021-11-19 14:21:46,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 13.0) internal successors, (286), 22 states have internal predecessors, (286), 10 states have call successors, (74), 3 states have call predecessors, (74), 7 states have return successors, (68), 10 states have call predecessors, (68), 10 states have call successors, (68) [2021-11-19 14:21:46,032 INFO L276 IsEmpty]: Start isEmpty. Operand 30172 states and 41126 transitions. [2021-11-19 14:21:46,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 757 [2021-11-19 14:21:46,048 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:21:46,049 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 10, 10, 10, 10, 10, 10, 7, 7, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:21:46,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:21:46,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:21:46,272 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:21:46,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:21:46,273 INFO L85 PathProgramCache]: Analyzing trace with hash -605283740, now seen corresponding path program 1 times [2021-11-19 14:21:46,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:21:46,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1893375267] [2021-11-19 14:21:46,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:21:46,277 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:21:46,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:21:46,279 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:21:46,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:21:49,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:21:49,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 3567 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:21:49,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:21:51,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1758 backedges. 522 proven. 0 refuted. 0 times theorem prover too weak. 1236 trivial. 0 not checked. [2021-11-19 14:21:51,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:21:53,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1758 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1758 trivial. 0 not checked. [2021-11-19 14:21:53,355 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:21:53,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1893375267] [2021-11-19 14:21:53,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1893375267] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:21:53,355 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:21:53,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-19 14:21:53,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763135943] [2021-11-19 14:21:53,356 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:21:53,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:21:53,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:21:53,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:21:53,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:21:53,359 INFO L87 Difference]: Start difference. First operand 30172 states and 41126 transitions. Second operand has 8 states, 8 states have (on average 49.875) internal successors, (399), 8 states have internal predecessors, (399), 2 states have call successors, (139), 2 states have call predecessors, (139), 2 states have return successors, (133), 2 states have call predecessors, (133), 2 states have call successors, (133) [2021-11-19 14:21:55,420 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:21:57,435 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:21:59,827 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:22:01,839 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:22:04,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:22:04,160 INFO L93 Difference]: Finished difference Result 65225 states and 89251 transitions. [2021-11-19 14:22:04,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:22:04,161 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 49.875) internal successors, (399), 8 states have internal predecessors, (399), 2 states have call successors, (139), 2 states have call predecessors, (139), 2 states have return successors, (133), 2 states have call predecessors, (133), 2 states have call successors, (133) Word has length 756 [2021-11-19 14:22:04,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:22:04,351 INFO L225 Difference]: With dead ends: 65225 [2021-11-19 14:22:04,351 INFO L226 Difference]: Without dead ends: 35074 [2021-11-19 14:22:04,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1513 GetRequests, 1505 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:22:04,730 INFO L933 BasicCegarLoop]: 2921 mSDtfsCounter, 1670 mSDsluCounter, 13746 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 305 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1747 SdHoareTripleChecker+Valid, 16667 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:22:04,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1747 Valid, 16667 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 115 Invalid, 3 Unknown, 0 Unchecked, 8.6s Time] [2021-11-19 14:22:04,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35074 states. [2021-11-19 14:22:06,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35074 to 30184. [2021-11-19 14:22:07,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30184 states, 20999 states have (on average 1.2643935425496453) internal successors, (26551), 21342 states have internal predecessors, (26551), 7293 states have call successors, (7293), 1893 states have call predecessors, (7293), 1891 states have return successors, (7294), 7183 states have call predecessors, (7294), 7293 states have call successors, (7294) [2021-11-19 14:22:07,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30184 states to 30184 states and 41138 transitions. [2021-11-19 14:22:07,127 INFO L78 Accepts]: Start accepts. Automaton has 30184 states and 41138 transitions. Word has length 756 [2021-11-19 14:22:07,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:22:07,128 INFO L470 AbstractCegarLoop]: Abstraction has 30184 states and 41138 transitions. [2021-11-19 14:22:07,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 49.875) internal successors, (399), 8 states have internal predecessors, (399), 2 states have call successors, (139), 2 states have call predecessors, (139), 2 states have return successors, (133), 2 states have call predecessors, (133), 2 states have call successors, (133) [2021-11-19 14:22:07,129 INFO L276 IsEmpty]: Start isEmpty. Operand 30184 states and 41138 transitions. [2021-11-19 14:22:07,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 778 [2021-11-19 14:22:07,145 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:22:07,146 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 10, 10, 10, 10, 10, 10, 7, 7, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:22:07,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:22:07,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:22:07,360 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:22:07,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:22:07,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1971496410, now seen corresponding path program 1 times [2021-11-19 14:22:07,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:22:07,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1431895014] [2021-11-19 14:22:07,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:22:07,364 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:22:07,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:22:07,365 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:22:07,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:22:10,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:22:10,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 3614 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:22:10,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:22:12,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1928 backedges. 594 proven. 0 refuted. 0 times theorem prover too weak. 1334 trivial. 0 not checked. [2021-11-19 14:22:12,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:22:14,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1928 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1928 trivial. 0 not checked. [2021-11-19 14:22:14,325 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:22:14,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1431895014] [2021-11-19 14:22:14,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1431895014] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:22:14,326 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:22:14,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:22:14,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394074878] [2021-11-19 14:22:14,327 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:22:14,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:22:14,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:22:14,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:22:14,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:22:14,329 INFO L87 Difference]: Start difference. First operand 30184 states and 41138 transitions. Second operand has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 2 states have call successors, (140), 2 states have call predecessors, (140), 2 states have return successors, (134), 2 states have call predecessors, (134), 2 states have call successors, (134) [2021-11-19 14:22:16,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:22:16,224 INFO L93 Difference]: Finished difference Result 60351 states and 82255 transitions. [2021-11-19 14:22:16,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:22:16,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 2 states have call successors, (140), 2 states have call predecessors, (140), 2 states have return successors, (134), 2 states have call predecessors, (134), 2 states have call successors, (134) Word has length 777 [2021-11-19 14:22:16,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:22:16,354 INFO L225 Difference]: With dead ends: 60351 [2021-11-19 14:22:16,354 INFO L226 Difference]: Without dead ends: 30188 [2021-11-19 14:22:16,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1552 GetRequests, 1551 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:22:16,468 INFO L933 BasicCegarLoop]: 2375 mSDtfsCounter, 0 mSDsluCounter, 2370 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4745 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:22:16,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 4745 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:22:16,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30188 states. [2021-11-19 14:22:18,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30188 to 30188. [2021-11-19 14:22:18,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30188 states, 21003 states have (on average 1.2643431890682284) internal successors, (26555), 21346 states have internal predecessors, (26555), 7293 states have call successors, (7293), 1893 states have call predecessors, (7293), 1891 states have return successors, (7294), 7183 states have call predecessors, (7294), 7293 states have call successors, (7294) [2021-11-19 14:22:18,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30188 states to 30188 states and 41142 transitions. [2021-11-19 14:22:18,289 INFO L78 Accepts]: Start accepts. Automaton has 30188 states and 41142 transitions. Word has length 777 [2021-11-19 14:22:18,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:22:18,290 INFO L470 AbstractCegarLoop]: Abstraction has 30188 states and 41142 transitions. [2021-11-19 14:22:18,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 2 states have call successors, (140), 2 states have call predecessors, (140), 2 states have return successors, (134), 2 states have call predecessors, (134), 2 states have call successors, (134) [2021-11-19 14:22:18,291 INFO L276 IsEmpty]: Start isEmpty. Operand 30188 states and 41142 transitions. [2021-11-19 14:22:18,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 778 [2021-11-19 14:22:18,302 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:22:18,303 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 10, 10, 10, 10, 10, 10, 7, 7, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:22:18,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 14:22:18,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:22:18,504 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:22:18,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:22:18,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1237757352, now seen corresponding path program 1 times [2021-11-19 14:22:18,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:22:18,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1960749799] [2021-11-19 14:22:18,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:22:18,509 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:22:18,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:22:18,510 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:22:18,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 14:22:21,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:22:22,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 3617 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:22:22,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:22:24,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1928 backedges. 594 proven. 0 refuted. 0 times theorem prover too weak. 1334 trivial. 0 not checked. [2021-11-19 14:22:24,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:22:26,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1928 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1928 trivial. 0 not checked. [2021-11-19 14:22:26,289 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:22:26,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1960749799] [2021-11-19 14:22:26,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1960749799] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:22:26,290 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:22:26,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:22:26,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414966714] [2021-11-19 14:22:26,290 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:22:26,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:22:26,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:22:26,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:22:26,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:22:26,292 INFO L87 Difference]: Start difference. First operand 30188 states and 41142 transitions. Second operand has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 2 states have call successors, (140), 2 states have call predecessors, (140), 2 states have return successors, (134), 2 states have call predecessors, (134), 2 states have call successors, (134) [2021-11-19 14:22:28,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:22:28,458 INFO L93 Difference]: Finished difference Result 60359 states and 82263 transitions. [2021-11-19 14:22:28,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:22:28,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 2 states have call successors, (140), 2 states have call predecessors, (140), 2 states have return successors, (134), 2 states have call predecessors, (134), 2 states have call successors, (134) Word has length 777 [2021-11-19 14:22:28,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:22:28,581 INFO L225 Difference]: With dead ends: 60359 [2021-11-19 14:22:28,582 INFO L226 Difference]: Without dead ends: 30192 [2021-11-19 14:22:28,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1552 GetRequests, 1551 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:22:28,660 INFO L933 BasicCegarLoop]: 2375 mSDtfsCounter, 0 mSDsluCounter, 2370 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4745 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:22:28,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 4745 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:22:28,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30192 states. [2021-11-19 14:22:30,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30192 to 30192. [2021-11-19 14:22:30,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30192 states, 21007 states have (on average 1.2642928547626981) internal successors, (26559), 21350 states have internal predecessors, (26559), 7293 states have call successors, (7293), 1893 states have call predecessors, (7293), 1891 states have return successors, (7294), 7183 states have call predecessors, (7294), 7293 states have call successors, (7294) [2021-11-19 14:22:30,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30192 states to 30192 states and 41146 transitions. [2021-11-19 14:22:30,488 INFO L78 Accepts]: Start accepts. Automaton has 30192 states and 41146 transitions. Word has length 777 [2021-11-19 14:22:30,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:22:30,489 INFO L470 AbstractCegarLoop]: Abstraction has 30192 states and 41146 transitions. [2021-11-19 14:22:30,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 2 states have call successors, (140), 2 states have call predecessors, (140), 2 states have return successors, (134), 2 states have call predecessors, (134), 2 states have call successors, (134) [2021-11-19 14:22:30,490 INFO L276 IsEmpty]: Start isEmpty. Operand 30192 states and 41146 transitions. [2021-11-19 14:22:30,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 778 [2021-11-19 14:22:30,501 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:22:30,502 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 10, 10, 10, 10, 10, 10, 7, 7, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:22:30,570 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-19 14:22:30,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:22:30,702 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:22:30,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:22:30,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1190375654, now seen corresponding path program 1 times [2021-11-19 14:22:30,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:22:30,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1589026038] [2021-11-19 14:22:30,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:22:30,706 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:22:30,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:22:30,707 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:22:30,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 14:22:34,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:22:34,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 3620 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:22:34,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:22:38,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1928 backedges. 594 proven. 0 refuted. 0 times theorem prover too weak. 1334 trivial. 0 not checked. [2021-11-19 14:22:38,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:22:40,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1928 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1928 trivial. 0 not checked. [2021-11-19 14:22:40,629 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:22:40,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1589026038] [2021-11-19 14:22:40,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1589026038] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:22:40,630 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:22:40,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 4 [2021-11-19 14:22:40,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851356038] [2021-11-19 14:22:40,631 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:22:40,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:22:40,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:22:40,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:22:40,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:22:40,633 INFO L87 Difference]: Start difference. First operand 30192 states and 41146 transitions. Second operand has 4 states, 4 states have (on average 126.5) internal successors, (506), 4 states have internal predecessors, (506), 4 states have call successors, (167), 3 states have call predecessors, (167), 3 states have return successors, (161), 4 states have call predecessors, (161), 4 states have call successors, (161) [2021-11-19 14:22:42,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:22:42,695 INFO L93 Difference]: Finished difference Result 61510 states and 83628 transitions. [2021-11-19 14:22:42,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:22:42,706 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 126.5) internal successors, (506), 4 states have internal predecessors, (506), 4 states have call successors, (167), 3 states have call predecessors, (167), 3 states have return successors, (161), 4 states have call predecessors, (161), 4 states have call successors, (161) Word has length 777 [2021-11-19 14:22:42,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:22:42,805 INFO L225 Difference]: With dead ends: 61510 [2021-11-19 14:22:42,805 INFO L226 Difference]: Without dead ends: 31339 [2021-11-19 14:22:42,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1552 GetRequests, 1550 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:22:42,884 INFO L933 BasicCegarLoop]: 2447 mSDtfsCounter, 349 mSDsluCounter, 4633 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 7080 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:22:42,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [349 Valid, 7080 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:22:42,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31339 states. [2021-11-19 14:22:44,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31339 to 31307. [2021-11-19 14:22:44,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31307 states, 21830 states have (on average 1.2606962895098488) internal successors, (27521), 22181 states have internal predecessors, (27521), 7476 states have call successors, (7476), 2002 states have call predecessors, (7476), 2000 states have return successors, (7477), 7360 states have call predecessors, (7477), 7476 states have call successors, (7477) [2021-11-19 14:22:44,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31307 states to 31307 states and 42474 transitions. [2021-11-19 14:22:44,944 INFO L78 Accepts]: Start accepts. Automaton has 31307 states and 42474 transitions. Word has length 777 [2021-11-19 14:22:44,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:22:44,946 INFO L470 AbstractCegarLoop]: Abstraction has 31307 states and 42474 transitions. [2021-11-19 14:22:44,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 126.5) internal successors, (506), 4 states have internal predecessors, (506), 4 states have call successors, (167), 3 states have call predecessors, (167), 3 states have return successors, (161), 4 states have call predecessors, (161), 4 states have call successors, (161) [2021-11-19 14:22:44,946 INFO L276 IsEmpty]: Start isEmpty. Operand 31307 states and 42474 transitions. [2021-11-19 14:22:44,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 798 [2021-11-19 14:22:44,963 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:22:44,964 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 11, 11, 11, 11, 11, 11, 7, 7, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:22:45,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 14:22:45,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:22:45,165 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:22:45,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:22:45,166 INFO L85 PathProgramCache]: Analyzing trace with hash 739195376, now seen corresponding path program 1 times [2021-11-19 14:22:45,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:22:45,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [242801541] [2021-11-19 14:22:45,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:22:45,171 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:22:45,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:22:45,172 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:22:45,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 14:22:48,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:22:48,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 3671 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:22:48,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:22:50,909 INFO L134 CoverageAnalysis]: Checked inductivity of 2050 backedges. 614 proven. 0 refuted. 0 times theorem prover too weak. 1436 trivial. 0 not checked. [2021-11-19 14:22:50,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:22:52,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2050 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2050 trivial. 0 not checked. [2021-11-19 14:22:52,491 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:22:52,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [242801541] [2021-11-19 14:22:52,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [242801541] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:22:52,491 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:22:52,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:22:52,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804951522] [2021-11-19 14:22:52,492 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:22:52,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:22:52,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:22:52,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:22:52,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:22:52,494 INFO L87 Difference]: Start difference. First operand 31307 states and 42474 transitions. Second operand has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 2 states have call successors, (141), 2 states have call predecessors, (141), 2 states have return successors, (135), 2 states have call predecessors, (135), 2 states have call successors, (135) [2021-11-19 14:22:55,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:22:55,146 INFO L93 Difference]: Finished difference Result 70017 states and 95923 transitions. [2021-11-19 14:22:55,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:22:55,147 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 2 states have call successors, (141), 2 states have call predecessors, (141), 2 states have return successors, (135), 2 states have call predecessors, (135), 2 states have call successors, (135) Word has length 797 [2021-11-19 14:22:55,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:22:55,271 INFO L225 Difference]: With dead ends: 70017 [2021-11-19 14:22:55,271 INFO L226 Difference]: Without dead ends: 39699 [2021-11-19 14:22:55,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1592 GetRequests, 1591 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:22:55,344 INFO L933 BasicCegarLoop]: 2732 mSDtfsCounter, 564 mSDsluCounter, 2385 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 5117 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:22:55,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [720 Valid, 5117 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:22:55,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39699 states. [2021-11-19 14:22:57,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39699 to 31342. [2021-11-19 14:22:57,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31342 states, 21840 states have (on average 1.260576923076923) internal successors, (27531), 22191 states have internal predecessors, (27531), 7501 states have call successors, (7501), 2002 states have call predecessors, (7501), 2000 states have return successors, (7502), 7385 states have call predecessors, (7502), 7501 states have call successors, (7502) [2021-11-19 14:22:57,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31342 states to 31342 states and 42534 transitions. [2021-11-19 14:22:57,560 INFO L78 Accepts]: Start accepts. Automaton has 31342 states and 42534 transitions. Word has length 797 [2021-11-19 14:22:57,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:22:57,561 INFO L470 AbstractCegarLoop]: Abstraction has 31342 states and 42534 transitions. [2021-11-19 14:22:57,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 2 states have call successors, (141), 2 states have call predecessors, (141), 2 states have return successors, (135), 2 states have call predecessors, (135), 2 states have call successors, (135) [2021-11-19 14:22:57,561 INFO L276 IsEmpty]: Start isEmpty. Operand 31342 states and 42534 transitions. [2021-11-19 14:22:57,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 805 [2021-11-19 14:22:57,580 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:22:57,581 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 11, 11, 11, 11, 11, 11, 7, 7, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:22:57,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 14:22:57,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:22:57,804 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:22:57,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:22:57,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1736194418, now seen corresponding path program 1 times [2021-11-19 14:22:57,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:22:57,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [357722776] [2021-11-19 14:22:57,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:22:57,810 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:22:57,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:22:57,811 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:22:57,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 14:23:01,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:23:01,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 3695 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 14:23:01,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:23:03,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2050 backedges. 527 proven. 0 refuted. 0 times theorem prover too weak. 1523 trivial. 0 not checked. [2021-11-19 14:23:03,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:23:05,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2050 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 2027 trivial. 0 not checked. [2021-11-19 14:23:05,669 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:23:05,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [357722776] [2021-11-19 14:23:05,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [357722776] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:23:05,669 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:23:05,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-19 14:23:05,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515557257] [2021-11-19 14:23:05,670 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:23:05,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:23:05,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:23:05,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:23:05,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:23:05,671 INFO L87 Difference]: Start difference. First operand 31342 states and 42534 transitions. Second operand has 12 states, 12 states have (on average 34.083333333333336) internal successors, (409), 8 states have internal predecessors, (409), 2 states have call successors, (139), 2 states have call predecessors, (139), 6 states have return successors, (136), 6 states have call predecessors, (136), 2 states have call successors, (136) [2021-11-19 14:23:07,227 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:23:09,239 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:23:12,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:23:12,200 INFO L93 Difference]: Finished difference Result 66717 states and 91033 transitions. [2021-11-19 14:23:12,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:23:12,201 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 34.083333333333336) internal successors, (409), 8 states have internal predecessors, (409), 2 states have call successors, (139), 2 states have call predecessors, (139), 6 states have return successors, (136), 6 states have call predecessors, (136), 2 states have call successors, (136) Word has length 804 [2021-11-19 14:23:12,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:23:12,305 INFO L225 Difference]: With dead ends: 66717 [2021-11-19 14:23:12,305 INFO L226 Difference]: Without dead ends: 36371 [2021-11-19 14:23:12,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1606 GetRequests, 1596 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:23:12,488 INFO L933 BasicCegarLoop]: 2950 mSDtfsCounter, 669 mSDsluCounter, 25876 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 28826 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:23:12,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [831 Valid, 28826 Invalid, 125 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 123 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2021-11-19 14:23:12,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36371 states. [2021-11-19 14:23:14,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36371 to 31370. [2021-11-19 14:23:14,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31370 states, 21860 states have (on average 1.260338517840805) internal successors, (27551), 22211 states have internal predecessors, (27551), 7501 states have call successors, (7501), 2002 states have call predecessors, (7501), 2008 states have return successors, (7518), 7393 states have call predecessors, (7518), 7501 states have call successors, (7518) [2021-11-19 14:23:14,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31370 states to 31370 states and 42570 transitions. [2021-11-19 14:23:14,697 INFO L78 Accepts]: Start accepts. Automaton has 31370 states and 42570 transitions. Word has length 804 [2021-11-19 14:23:14,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:23:14,698 INFO L470 AbstractCegarLoop]: Abstraction has 31370 states and 42570 transitions. [2021-11-19 14:23:14,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 34.083333333333336) internal successors, (409), 8 states have internal predecessors, (409), 2 states have call successors, (139), 2 states have call predecessors, (139), 6 states have return successors, (136), 6 states have call predecessors, (136), 2 states have call successors, (136) [2021-11-19 14:23:14,699 INFO L276 IsEmpty]: Start isEmpty. Operand 31370 states and 42570 transitions. [2021-11-19 14:23:14,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 821 [2021-11-19 14:23:14,718 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:23:14,718 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 20, 20, 11, 11, 11, 11, 11, 10, 7, 7, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:23:14,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 14:23:14,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:23:14,932 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:23:14,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:23:14,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1253090032, now seen corresponding path program 1 times [2021-11-19 14:23:14,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:23:14,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1385376134] [2021-11-19 14:23:14,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:23:14,936 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:23:14,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:23:14,937 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:23:14,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ae6bc4-3495-43cd-a8ae-ff224959cb6a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 14:23:18,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:23:18,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 3727 conjuncts, 49 conjunts are in the unsatisfiable core [2021-11-19 14:23:18,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:23:24,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2223 backedges. 758 proven. 127 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2021-11-19 14:23:24,627 INFO L328 TraceCheckSpWp]: Computing backward predicates...