./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-ti-tlan.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_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/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_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-ti-tlan.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/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_929af35b-d893-4dbc-8360-a7e83b6b9806/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 fe434f0112be26c4714543d386b3350bd2a9bdce09b4b83ffbdf4c55da2983b7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:43:04,232 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:43:04,237 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:43:04,310 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:43:04,311 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:43:04,313 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:43:04,315 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:43:04,323 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:43:04,326 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:43:04,328 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:43:04,329 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:43:04,331 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:43:04,332 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:43:04,334 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:43:04,336 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:43:04,338 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:43:04,339 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:43:04,341 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:43:04,344 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:43:04,347 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:43:04,350 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:43:04,352 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:43:04,354 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:43:04,356 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:43:04,361 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:43:04,362 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:43:04,362 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:43:04,364 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:43:04,365 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:43:04,366 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:43:04,367 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:43:04,368 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:43:04,370 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:43:04,371 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:43:04,373 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:43:04,373 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:43:04,374 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:43:04,375 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:43:04,376 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:43:04,377 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:43:04,379 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:43:04,380 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 15:43:04,414 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:43:04,414 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:43:04,415 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:43:04,416 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:43:04,416 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:43:04,417 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:43:04,417 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:43:04,417 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 15:43:04,418 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:43:04,418 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:43:04,418 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 15:43:04,418 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 15:43:04,419 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:43:04,419 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 15:43:04,420 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 15:43:04,420 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 15:43:04,421 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:43:04,421 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 15:43:04,421 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:43:04,422 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:43:04,422 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:43:04,422 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:43:04,423 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:43:04,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:43:04,423 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:43:04,424 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:43:04,424 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:43:04,425 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:43:04,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:43:04,425 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:43:04,426 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:43:04,426 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:43:04,426 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 15:43:04,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 15:43:04,427 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:43:04,427 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:43:04,428 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:43:04,428 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_929af35b-d893-4dbc-8360-a7e83b6b9806/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe434f0112be26c4714543d386b3350bd2a9bdce09b4b83ffbdf4c55da2983b7 [2021-11-19 15:43:04,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:43:04,803 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:43:04,807 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:43:04,809 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:43:04,810 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:43:04,812 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-ti-tlan.cil.i [2021-11-19 15:43:04,927 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/data/d86a4ff9d/7c6a197d14144897bf170c14c3521a99/FLAGe0c9f33da [2021-11-19 15:43:06,157 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:43:06,158 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-ti-tlan.cil.i [2021-11-19 15:43:06,228 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/data/d86a4ff9d/7c6a197d14144897bf170c14c3521a99/FLAGe0c9f33da [2021-11-19 15:43:06,390 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/data/d86a4ff9d/7c6a197d14144897bf170c14c3521a99 [2021-11-19 15:43:06,393 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:43:06,399 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:43:06,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:43:06,405 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:43:06,409 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:43:06,410 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:43:06" (1/1) ... [2021-11-19 15:43:06,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c33b755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:43:06, skipping insertion in model container [2021-11-19 15:43:06,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:43:06" (1/1) ... [2021-11-19 15:43:06,423 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:43:06,644 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:43:09,301 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 15:43:09,358 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 15:43:09,368 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 15:43:10,609 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_929af35b-d893-4dbc-8360-a7e83b6b9806/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-ti-tlan.cil.i[339084,339097] [2021-11-19 15:43:10,612 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_929af35b-d893-4dbc-8360-a7e83b6b9806/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-ti-tlan.cil.i[339229,339242] [2021-11-19 15:43:10,641 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:43:10,716 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 15:43:10,717 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@75eaea06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:43:10, skipping insertion in model container [2021-11-19 15:43:10,717 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:43:10,718 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 15:43:10,723 INFO L158 Benchmark]: Toolchain (without parser) took 4321.55ms. Allocated memory was 109.1MB in the beginning and 234.9MB in the end (delta: 125.8MB). Free memory was 61.5MB in the beginning and 149.0MB in the end (delta: -87.6MB). Peak memory consumption was 48.8MB. Max. memory is 16.1GB. [2021-11-19 15:43:10,725 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 109.1MB. Free memory was 63.3MB in the beginning and 63.2MB in the end (delta: 45.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 15:43:10,727 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4312.78ms. Allocated memory was 109.1MB in the beginning and 234.9MB in the end (delta: 125.8MB). Free memory was 61.2MB in the beginning and 149.0MB in the end (delta: -87.8MB). Peak memory consumption was 48.8MB. Max. memory is 16.1GB. [2021-11-19 15:43:10,730 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 109.1MB. Free memory was 63.3MB in the beginning and 63.2MB in the end (delta: 45.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4312.78ms. Allocated memory was 109.1MB in the beginning and 234.9MB in the end (delta: 125.8MB). Free memory was 61.2MB in the beginning and 149.0MB in the end (delta: -87.8MB). Peak memory consumption was 48.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6414]: 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_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/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_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-ti-tlan.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/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_929af35b-d893-4dbc-8360-a7e83b6b9806/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 fe434f0112be26c4714543d386b3350bd2a9bdce09b4b83ffbdf4c55da2983b7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:43:13,572 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:43:13,576 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:43:13,653 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:43:13,654 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:43:13,659 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:43:13,662 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:43:13,668 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:43:13,672 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:43:13,681 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:43:13,683 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:43:13,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:43:13,686 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:43:13,688 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:43:13,690 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:43:13,691 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:43:13,692 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:43:13,694 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:43:13,696 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:43:13,699 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:43:13,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:43:13,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:43:13,707 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:43:13,710 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:43:13,719 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:43:13,719 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:43:13,720 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:43:13,721 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:43:13,722 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:43:13,723 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:43:13,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:43:13,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:43:13,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:43:13,727 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:43:13,728 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:43:13,728 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:43:13,729 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:43:13,729 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:43:13,730 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:43:13,731 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:43:13,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:43:13,733 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 15:43:13,764 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:43:13,764 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:43:13,765 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:43:13,765 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:43:13,765 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:43:13,766 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:43:13,766 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:43:13,766 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:43:13,766 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:43:13,767 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:43:13,768 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:43:13,768 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:43:13,768 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:43:13,768 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:43:13,769 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:43:13,769 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:43:13,769 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 15:43:13,769 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 15:43:13,769 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:43:13,770 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:43:13,770 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:43:13,770 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:43:13,772 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 15:43:13,772 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:43:13,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:43:13,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:43:13,773 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:43:13,773 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:43:13,774 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 15:43:13,774 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 15:43:13,775 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:43:13,775 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:43:13,775 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:43:13,775 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_929af35b-d893-4dbc-8360-a7e83b6b9806/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe434f0112be26c4714543d386b3350bd2a9bdce09b4b83ffbdf4c55da2983b7 [2021-11-19 15:43:14,243 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:43:14,269 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:43:14,273 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:43:14,274 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:43:14,275 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:43:14,277 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-ti-tlan.cil.i [2021-11-19 15:43:14,370 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/data/0ae71a31a/ab7ecd2eb60f401a8eca4db9e79800e0/FLAG48b8a9a2a [2021-11-19 15:43:15,671 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:43:15,673 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-ti-tlan.cil.i [2021-11-19 15:43:15,762 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/data/0ae71a31a/ab7ecd2eb60f401a8eca4db9e79800e0/FLAG48b8a9a2a [2021-11-19 15:43:15,882 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/data/0ae71a31a/ab7ecd2eb60f401a8eca4db9e79800e0 [2021-11-19 15:43:15,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:43:15,887 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:43:15,889 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:43:15,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:43:15,894 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:43:15,895 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:43:15" (1/1) ... [2021-11-19 15:43:15,896 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a4c6d53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:43:15, skipping insertion in model container [2021-11-19 15:43:15,897 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:43:15" (1/1) ... [2021-11-19 15:43:15,906 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:43:16,166 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:43:19,962 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_929af35b-d893-4dbc-8360-a7e83b6b9806/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-ti-tlan.cil.i[339084,339097] [2021-11-19 15:43:19,966 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_929af35b-d893-4dbc-8360-a7e83b6b9806/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-ti-tlan.cil.i[339229,339242] [2021-11-19 15:43:19,991 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:43:20,047 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 15:43:20,143 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:43:20,705 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_929af35b-d893-4dbc-8360-a7e83b6b9806/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-ti-tlan.cil.i[339084,339097] [2021-11-19 15:43:20,706 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_929af35b-d893-4dbc-8360-a7e83b6b9806/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-ti-tlan.cil.i[339229,339242] [2021-11-19 15:43:20,714 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:43:20,758 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 15:43:21,371 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_929af35b-d893-4dbc-8360-a7e83b6b9806/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-ti-tlan.cil.i[339084,339097] [2021-11-19 15:43:21,372 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_929af35b-d893-4dbc-8360-a7e83b6b9806/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-ti-tlan.cil.i[339229,339242] [2021-11-19 15:43:21,380 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:43:21,832 INFO L208 MainTranslator]: Completed translation [2021-11-19 15:43:21,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:43:21 WrapperNode [2021-11-19 15:43:21,832 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:43:21,834 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 15:43:21,834 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 15:43:21,834 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 15:43:21,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:43:21" (1/1) ... [2021-11-19 15:43:21,973 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:43:21" (1/1) ... [2021-11-19 15:43:22,235 INFO L137 Inliner]: procedures = 439, calls = 2331, calls flagged for inlining = 195, calls inlined = 180, statements flattened = 4764 [2021-11-19 15:43:22,237 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 15:43:22,238 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 15:43:22,239 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 15:43:22,239 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 15:43:22,250 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:43:21" (1/1) ... [2021-11-19 15:43:22,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:43:21" (1/1) ... [2021-11-19 15:43:22,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:43:21" (1/1) ... [2021-11-19 15:43:22,419 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:43:21" (1/1) ... [2021-11-19 15:43:22,612 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:43:21" (1/1) ... [2021-11-19 15:43:22,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:43:21" (1/1) ... [2021-11-19 15:43:22,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:43:21" (1/1) ... [2021-11-19 15:43:22,742 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 15:43:22,745 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 15:43:22,745 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 15:43:22,745 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 15:43:22,746 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:43:21" (1/1) ... [2021-11-19 15:43:22,754 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:43:22,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:43:22,788 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 15:43:22,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 15:43:22,855 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_resume [2021-11-19 15:43:22,856 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_resume [2021-11-19 15:43:22,856 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-19 15:43:22,856 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-19 15:43:22,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-19 15:43:22,856 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-19 15:43:22,857 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-19 15:43:22,857 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-19 15:43:22,857 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_mii_write_reg [2021-11-19 15:43:22,857 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_mii_write_reg [2021-11-19 15:43:22,857 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_86 [2021-11-19 15:43:22,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_86 [2021-11-19 15:43:22,858 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-19 15:43:22,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-19 15:43:22,858 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_timer_instance_3 [2021-11-19 15:43:22,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_timer_instance_3 [2021-11-19 15:43:22,859 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_dio_read8 [2021-11-19 15:43:22,859 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_dio_read8 [2021-11-19 15:43:22,859 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-19 15:43:22,859 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-19 15:43:22,859 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_tlan_priv [2021-11-19 15:43:22,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_tlan_priv [2021-11-19 15:43:22,860 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_read_and_clear_stats [2021-11-19 15:43:22,860 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_read_and_clear_stats [2021-11-19 15:43:22,860 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_mii_sync [2021-11-19 15:43:22,860 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_mii_sync [2021-11-19 15:43:22,861 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-19 15:43:22,861 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-19 15:43:22,861 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-19 15:43:22,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-19 15:43:22,861 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-19 15:43:22,862 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-19 15:43:22,862 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-19 15:43:22,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-19 15:43:22,863 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-19 15:43:22,863 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-19 15:43:22,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 15:43:22,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-19 15:43:22,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 15:43:22,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 15:43:22,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 15:43:22,864 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-19 15:43:22,865 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-19 15:43:22,865 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_reset_lists [2021-11-19 15:43:22,865 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_reset_lists [2021-11-19 15:43:22,865 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_close [2021-11-19 15:43:22,866 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_close [2021-11-19 15:43:22,866 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-19 15:43:22,867 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-19 15:43:22,868 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_phy_print [2021-11-19 15:43:22,868 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_phy_print [2021-11-19 15:43:22,868 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-11-19 15:43:22,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-11-19 15:43:22,869 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_tlan_priv [2021-11-19 15:43:22,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_tlan_priv [2021-11-19 15:43:22,869 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pci_unregister_driver [2021-11-19 15:43:22,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pci_unregister_driver [2021-11-19 15:43:22,870 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_probe1 [2021-11-19 15:43:22,870 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_probe1 [2021-11-19 15:43:22,871 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-19 15:43:22,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-19 15:43:22,871 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-19 15:43:22,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-19 15:43:22,872 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-19 15:43:22,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-19 15:43:22,872 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-19 15:43:22,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-19 15:43:22,874 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-19 15:43:22,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-19 15:43:22,874 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-19 15:43:22,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-19 15:43:22,874 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_set_timer [2021-11-19 15:43:22,875 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_set_timer [2021-11-19 15:43:22,875 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_timer [2021-11-19 15:43:22,875 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_timer [2021-11-19 15:43:22,875 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_instance_callback_3_2 [2021-11-19 15:43:22,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_instance_callback_3_2 [2021-11-19 15:43:22,876 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_stop [2021-11-19 15:43:22,876 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_stop [2021-11-19 15:43:22,876 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-19 15:43:22,877 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-19 15:43:22,877 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_88 [2021-11-19 15:43:22,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_88 [2021-11-19 15:43:22,878 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-19 15:43:22,878 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-19 15:43:22,878 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_remove_one [2021-11-19 15:43:22,878 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_remove_one [2021-11-19 15:43:22,879 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_get_skb [2021-11-19 15:43:22,879 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_get_skb [2021-11-19 15:43:22,880 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_ee_send_byte [2021-11-19 15:43:22,880 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_ee_send_byte [2021-11-19 15:43:22,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 15:43:22,880 INFO L130 BoogieDeclarations]: Found specification of procedure inb_p [2021-11-19 15:43:22,880 INFO L138 BoogieDeclarations]: Found implementation of procedure inb_p [2021-11-19 15:43:22,881 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_poll [2021-11-19 15:43:22,881 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_poll [2021-11-19 15:43:22,881 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-19 15:43:22,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-19 15:43:22,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 15:43:22,882 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-19 15:43:22,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-19 15:43:22,882 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-19 15:43:22,882 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-19 15:43:22,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 15:43:22,883 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-19 15:43:22,883 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 15:43:22,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 15:43:22,884 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_free_lists [2021-11-19 15:43:22,884 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_free_lists [2021-11-19 15:43:22,885 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-19 15:43:22,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-19 15:43:22,889 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-19 15:43:22,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-19 15:43:22,890 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-19 15:43:22,891 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-19 15:43:22,892 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-19 15:43:22,893 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-19 15:43:22,893 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-19 15:43:22,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-19 15:43:22,899 INFO L130 BoogieDeclarations]: Found specification of procedure outb_p [2021-11-19 15:43:22,899 INFO L138 BoogieDeclarations]: Found implementation of procedure outb_p [2021-11-19 15:43:22,899 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_store_skb [2021-11-19 15:43:22,899 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_store_skb [2021-11-19 15:43:22,899 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_tx_timeout [2021-11-19 15:43:22,900 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_tx_timeout [2021-11-19 15:43:22,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 15:43:22,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 15:43:22,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 15:43:22,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 15:43:22,901 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unregister_driver [2021-11-19 15:43:22,901 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unregister_driver [2021-11-19 15:43:22,901 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 15:43:22,901 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_phy_power_up [2021-11-19 15:43:22,901 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_phy_power_up [2021-11-19 15:43:22,901 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-19 15:43:22,902 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-19 15:43:22,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-19 15:43:22,902 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-19 15:43:22,902 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-19 15:43:22,902 INFO L130 BoogieDeclarations]: Found specification of procedure slow_down_io [2021-11-19 15:43:22,903 INFO L138 BoogieDeclarations]: Found implementation of procedure slow_down_io [2021-11-19 15:43:22,903 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_handle_interrupt [2021-11-19 15:43:22,903 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_handle_interrupt [2021-11-19 15:43:22,903 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_start [2021-11-19 15:43:22,903 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_start [2021-11-19 15:43:22,903 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-19 15:43:22,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-19 15:43:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_phy_finish_auto_neg [2021-11-19 15:43:22,904 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_phy_finish_auto_neg [2021-11-19 15:43:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-19 15:43:22,904 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-19 15:43:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-19 15:43:22,905 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-19 15:43:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb_ip_align [2021-11-19 15:43:22,905 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb_ip_align [2021-11-19 15:43:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_phy_start_link [2021-11-19 15:43:22,905 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_phy_start_link [2021-11-19 15:43:22,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 15:43:22,906 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_set_multicast_list [2021-11-19 15:43:22,906 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_set_multicast_list [2021-11-19 15:43:22,906 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-19 15:43:22,906 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-19 15:43:22,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 15:43:22,907 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-19 15:43:22,907 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-19 15:43:22,907 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dispatch_instance_register_8_2 [2021-11-19 15:43:22,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dispatch_instance_register_8_2 [2021-11-19 15:43:22,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 15:43:22,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 15:43:22,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-19 15:43:22,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 15:43:22,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 15:43:22,909 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_print_list [2021-11-19 15:43:22,909 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_print_list [2021-11-19 15:43:22,909 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_dio_write16 [2021-11-19 15:43:22,909 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_dio_write16 [2021-11-19 15:43:22,909 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2021-11-19 15:43:22,910 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2021-11-19 15:43:22,910 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-19 15:43:22,910 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-19 15:43:22,910 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-11-19 15:43:22,910 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-11-19 15:43:22,911 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-19 15:43:22,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-19 15:43:22,911 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2021-11-19 15:43:22,911 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2021-11-19 15:43:22,911 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_finish_reset [2021-11-19 15:43:22,911 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_finish_reset [2021-11-19 15:43:22,912 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_dio_write32 [2021-11-19 15:43:22,912 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_dio_write32 [2021-11-19 15:43:22,912 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-19 15:43:22,912 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-19 15:43:22,912 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-19 15:43:22,913 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-19 15:43:22,913 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_set_mac [2021-11-19 15:43:22,913 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_set_mac [2021-11-19 15:43:22,913 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2021-11-19 15:43:22,913 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2021-11-19 15:43:22,913 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_ee_send_start [2021-11-19 15:43:22,914 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_ee_send_start [2021-11-19 15:43:22,914 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_dio_read32 [2021-11-19 15:43:22,914 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_dio_read32 [2021-11-19 15:43:22,914 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_dio_write8 [2021-11-19 15:43:22,914 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_dio_write8 [2021-11-19 15:43:22,915 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-19 15:43:22,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-19 15:43:22,915 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_phy_power_down [2021-11-19 15:43:22,915 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_phy_power_down [2021-11-19 15:43:22,915 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-19 15:43:22,915 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-19 15:43:22,916 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_reset_adapter [2021-11-19 15:43:22,916 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_reset_adapter [2021-11-19 15:43:22,916 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_mii_send_data [2021-11-19 15:43:22,916 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_mii_send_data [2021-11-19 15:43:22,916 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_phy_reset [2021-11-19 15:43:22,917 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_phy_reset [2021-11-19 15:43:22,917 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_mii_read_reg [2021-11-19 15:43:22,917 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_mii_read_reg [2021-11-19 15:43:22,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-19 15:43:22,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-19 15:43:22,917 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_open [2021-11-19 15:43:22,918 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_open [2021-11-19 15:43:22,918 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-19 15:43:22,918 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-19 15:43:22,918 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-11-19 15:43:22,918 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-11-19 15:43:22,919 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_ULONG~TO~VOID [2021-11-19 15:43:22,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_ULONG~TO~VOID [2021-11-19 15:43:22,919 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2021-11-19 15:43:22,919 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2021-11-19 15:43:22,919 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2021-11-19 15:43:22,919 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2021-11-19 15:43:22,920 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2021-11-19 15:43:22,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-19 15:43:22,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-19 15:43:22,920 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-11-19 15:43:22,922 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-11-19 15:43:22,926 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2021-11-19 15:43:22,927 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2021-11-19 15:43:24,148 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 15:43:24,157 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 15:43:36,951 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-19 15:44:03,807 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6972: assume 1bv32 != ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___3~1#1); [2021-11-19 15:44:03,808 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6972: assume !(1bv32 != ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___3~1#1)); [2021-11-19 15:44:03,808 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7005: assume 16bv32 == ~debug~0;havoc tlan_eisa_probe_#t~nondet339#1; [2021-11-19 15:44:03,808 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7005: assume !(16bv32 == ~debug~0); [2021-11-19 15:44:03,809 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6974: SUMMARY for call __release_region(~#ioport_resource~0.base, ~#ioport_resource~0.offset, tlan_eisa_probe_~ioaddr~0#1, 16bv64); srcloc: null [2021-11-19 15:44:03,809 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6974-1: assume 16bv32 == ~debug~0;havoc tlan_eisa_probe_#t~nondet340#1; [2021-11-19 15:44:03,809 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6974-1: assume !(16bv32 == ~debug~0); [2021-11-19 15:44:03,809 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6945: assume 0bv64 == ~bvadd64(tlan_eisa_probe_~tmp___1~5#1.base, tlan_eisa_probe_~tmp___1~5#1.offset); [2021-11-19 15:44:03,809 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6945: assume !(0bv64 == ~bvadd64(tlan_eisa_probe_~tmp___1~5#1.base, tlan_eisa_probe_~tmp___1~5#1.offset)); [2021-11-19 15:44:03,810 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6979: assume 16bv32 == ~debug~0;havoc tlan_eisa_probe_#t~nondet336#1; [2021-11-19 15:44:03,810 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6979: assume !(16bv32 == ~debug~0); [2021-11-19 15:44:03,810 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7045: assume ~bvsle64(tlan_eisa_probe_~ioaddr~0#1, 36863bv64); [2021-11-19 15:44:03,810 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7045: assume !~bvsle64(tlan_eisa_probe_~ioaddr~0#1, 36863bv64); [2021-11-19 15:44:03,811 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6979-2: SUMMARY for call tlan_eisa_probe_#t~ret337#1 := inb(~bvadd32(3264bv32, tlan_eisa_probe_~ioaddr~0#1[32:0])); srcloc: null [2021-11-19 15:44:03,811 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7047: assume 0bv32 != ~bvand32(16bv32, ~debug~0); [2021-11-19 15:44:03,811 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7047: assume !(0bv32 != ~bvand32(16bv32, ~debug~0)); [2021-11-19 15:44:03,811 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6950: SUMMARY for call tlan_eisa_probe_#t~ret333#1 := inw(~bvadd32(3200bv32, tlan_eisa_probe_~ioaddr~0#1[32:0])); srcloc: null [2021-11-19 15:44:03,811 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6950-1: tlan_eisa_probe_~tmp___2~2#1 := tlan_eisa_probe_#t~ret333#1;havoc tlan_eisa_probe_#t~ret333#1; [2021-11-19 15:44:03,812 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7017: SUMMARY for call tlan_eisa_probe_#t~ret338#1 := tlan_probe1(0bv64, 0bv64, tlan_eisa_probe_~ioaddr~0#1, tlan_eisa_probe_~irq~0#1, 12bv32, 0bv64, 0bv64); srcloc: null [2021-11-19 15:44:03,812 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6952: assume 4366bv32 != ~zero_extendFrom16To32(tlan_eisa_probe_~tmp___2~2#1); [2021-11-19 15:44:03,812 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6952: assume !(4366bv32 != ~zero_extendFrom16To32(tlan_eisa_probe_~tmp___2~2#1)); [2021-11-19 15:44:03,812 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6986: tlan_eisa_probe_~tmp___4~0#1 := tlan_eisa_probe_#t~ret337#1;havoc tlan_eisa_probe_#t~ret337#1; [2021-11-19 15:44:03,813 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6954: SUMMARY for call __release_region(~#ioport_resource~0.base, ~#ioport_resource~0.offset, tlan_eisa_probe_~ioaddr~0#1, 16bv64); srcloc: null [2021-11-19 15:44:03,813 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6921-1: assume 0bv32 != ~bvand32(16bv32, ~debug~0); [2021-11-19 15:44:03,813 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6921-1: assume !(0bv32 != ~bvand32(16bv32, ~debug~0)); [2021-11-19 15:44:03,813 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6923-1: tlan_eisa_probe_~tmp~35#1 := tlan_eisa_probe_#t~ret327#1;havoc tlan_eisa_probe_#t~ret327#1;havoc tlan_eisa_probe_#t~nondet328#1; [2021-11-19 15:44:03,813 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6923: SUMMARY for call tlan_eisa_probe_#t~ret327#1 := inw(~bvadd32(3200bv32, tlan_eisa_probe_~ioaddr~0#1[32:0])); srcloc: null [2021-11-19 15:44:03,814 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6989: assume 16bv32 == ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___4~0#1); [2021-11-19 15:44:03,814 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6989: assume !(16bv32 == ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___4~0#1)); [2021-11-19 15:44:03,814 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6990: tlan_eisa_probe_~irq~0#1 := 5bv32; [2021-11-19 15:44:03,814 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7024: tlan_eisa_probe_~rc~2#1 := tlan_eisa_probe_#t~ret338#1;havoc tlan_eisa_probe_#t~ret338#1; [2021-11-19 15:44:03,814 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6960-1: tlan_eisa_probe_~device_id~1#1 := tlan_eisa_probe_#t~ret334#1;havoc tlan_eisa_probe_#t~ret334#1; [2021-11-19 15:44:03,815 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6960: SUMMARY for call tlan_eisa_probe_#t~ret334#1 := inw(~bvadd32(3202bv32, tlan_eisa_probe_~ioaddr~0#1[32:0])); srcloc: null [2021-11-19 15:44:03,815 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6993: assume 32bv32 == ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___4~0#1); [2021-11-19 15:44:03,815 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6993: assume !(32bv32 == ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___4~0#1)); [2021-11-19 15:44:03,815 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6994: tlan_eisa_probe_~irq~0#1 := 9bv32; [2021-11-19 15:44:03,815 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6928-1: assume 0bv32 != ~bvand32(16bv32, ~debug~0);havoc tlan_eisa_probe_#t~nondet331#1; [2021-11-19 15:44:03,816 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6928-1: assume !(0bv32 != ~bvand32(16bv32, ~debug~0)); [2021-11-19 15:44:03,816 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6962: assume 8433bv32 != ~zero_extendFrom16To32(tlan_eisa_probe_~device_id~1#1) && 16625bv32 != ~zero_extendFrom16To32(tlan_eisa_probe_~device_id~1#1); [2021-11-19 15:44:03,816 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6962: assume !(8433bv32 != ~zero_extendFrom16To32(tlan_eisa_probe_~device_id~1#1) && 16625bv32 != ~zero_extendFrom16To32(tlan_eisa_probe_~device_id~1#1)); [2021-11-19 15:44:03,816 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6930: SUMMARY for call tlan_eisa_probe_#t~ret329#1 := inw(~bvadd32(3202bv32, tlan_eisa_probe_~ioaddr~0#1[32:0])); srcloc: null [2021-11-19 15:44:03,816 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6930-1: tlan_eisa_probe_~tmp___0~12#1 := tlan_eisa_probe_#t~ret329#1;havoc tlan_eisa_probe_#t~ret329#1;havoc tlan_eisa_probe_#t~nondet330#1; [2021-11-19 15:44:03,817 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6964: SUMMARY for call __release_region(~#ioport_resource~0.base, ~#ioport_resource~0.offset, tlan_eisa_probe_~ioaddr~0#1, 16bv64); srcloc: null [2021-11-19 15:44:03,817 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6997: assume 64bv32 == ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___4~0#1); [2021-11-19 15:44:03,817 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6997: assume !(64bv32 == ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___4~0#1)); [2021-11-19 15:44:03,817 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6998: tlan_eisa_probe_~irq~0#1 := 10bv32; [2021-11-19 15:44:03,818 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6935-1: call tlan_eisa_probe_#t~ret332#1.base, tlan_eisa_probe_#t~ret332#1.offset := __request_region(~#ioport_resource~0.base, ~#ioport_resource~0.offset, tlan_eisa_probe_~ioaddr~0#1, 16bv64, ~#tlan_signature~0.base, ~#tlan_signature~0.offset, 0bv32);tlan_eisa_probe_~tmp___1~5#1.base, tlan_eisa_probe_~tmp___1~5#1.offset := tlan_eisa_probe_#t~ret332#1.base, tlan_eisa_probe_#t~ret332#1.offset;havoc tlan_eisa_probe_#t~ret332#1.base, tlan_eisa_probe_#t~ret332#1.offset; [2021-11-19 15:44:03,818 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7001: assume 128bv32 == ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___4~0#1); [2021-11-19 15:44:03,818 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7001: assume !(128bv32 == ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___4~0#1)); [2021-11-19 15:44:03,818 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7002: tlan_eisa_probe_~irq~0#1 := 11bv32; [2021-11-19 15:44:03,819 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6970: SUMMARY for call tlan_eisa_probe_#t~ret335#1 := inb(~bvadd32(3204bv32, tlan_eisa_probe_~ioaddr~0#1[32:0])); srcloc: null [2021-11-19 15:44:03,819 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7036-1: tlan_eisa_probe_~ioaddr~0#1 := ~bvadd64(4096bv64, tlan_eisa_probe_~ioaddr~0#1); [2021-11-19 15:44:03,819 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6970-1: tlan_eisa_probe_~tmp___3~1#1 := tlan_eisa_probe_#t~ret335#1;havoc tlan_eisa_probe_#t~ret335#1; [2021-11-19 15:44:03,929 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 15:44:03,954 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 15:44:03,955 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 15:44:03,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:44:03 BoogieIcfgContainer [2021-11-19 15:44:03,962 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 15:44:03,964 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 15:44:03,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 15:44:03,967 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 15:44:03,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 03:43:15" (1/3) ... [2021-11-19 15:44:03,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@512bd385 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:44:03, skipping insertion in model container [2021-11-19 15:44:03,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:43:21" (2/3) ... [2021-11-19 15:44:03,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@512bd385 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:44:03, skipping insertion in model container [2021-11-19 15:44:03,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:44:03" (3/3) ... [2021-11-19 15:44:03,971 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-ti-tlan.cil.i [2021-11-19 15:44:03,978 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 15:44:03,978 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 15:44:04,056 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 15:44:04,063 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 15:44:04,064 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 15:44:04,140 INFO L276 IsEmpty]: Start isEmpty. Operand has 1996 states, 1285 states have (on average 1.2568093385214008) internal successors, (1615), 1339 states have internal predecessors, (1615), 602 states have call successors, (602), 108 states have call predecessors, (602), 107 states have return successors, (598), 580 states have call predecessors, (598), 598 states have call successors, (598) [2021-11-19 15:44:04,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-19 15:44:04,174 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:44:04,175 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-19 15:44:04,176 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:44:04,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:44:04,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1038281529, now seen corresponding path program 1 times [2021-11-19 15:44:04,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:44:04,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1492587405] [2021-11-19 15:44:04,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:44:04,210 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:44:04,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:44:04,217 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:44:04,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 15:44:06,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:44:06,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 1987 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:44:06,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:44:07,898 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2021-11-19 15:44:07,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:44:08,777 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2021-11-19 15:44:08,778 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:44:08,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1492587405] [2021-11-19 15:44:08,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1492587405] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:44:08,779 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:44:08,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 4 [2021-11-19 15:44:08,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297772845] [2021-11-19 15:44:08,782 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:44:08,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:44:08,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:44:08,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:44:08,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:44:08,853 INFO L87 Difference]: Start difference. First operand has 1996 states, 1285 states have (on average 1.2568093385214008) internal successors, (1615), 1339 states have internal predecessors, (1615), 602 states have call successors, (602), 108 states have call predecessors, (602), 107 states have return successors, (598), 580 states have call predecessors, (598), 598 states have call successors, (598) Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-11-19 15:44:11,079 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:44:16,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:44:16,601 INFO L93 Difference]: Finished difference Result 6721 states and 9768 transitions. [2021-11-19 15:44:16,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:44:16,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 172 [2021-11-19 15:44:16,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:44:16,709 INFO L225 Difference]: With dead ends: 6721 [2021-11-19 15:44:16,709 INFO L226 Difference]: Without dead ends: 3550 [2021-11-19 15:44:16,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 340 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 15:44:16,793 INFO L933 BasicCegarLoop]: 4244 mSDtfsCounter, 3820 mSDsluCounter, 6100 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 33 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3820 SdHoareTripleChecker+Valid, 10344 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-11-19 15:44:16,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3820 Valid, 10344 Invalid, 856 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [33 Valid, 822 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2021-11-19 15:44:16,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3550 states. [2021-11-19 15:44:17,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3550 to 3533. [2021-11-19 15:44:17,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3533 states, 2298 states have (on average 1.2389033942558747) internal successors, (2847), 2394 states have internal predecessors, (2847), 1033 states have call successors, (1033), 201 states have call predecessors, (1033), 201 states have return successors, (1042), 999 states have call predecessors, (1042), 1033 states have call successors, (1042) [2021-11-19 15:44:17,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3533 states to 3533 states and 4922 transitions. [2021-11-19 15:44:17,384 INFO L78 Accepts]: Start accepts. Automaton has 3533 states and 4922 transitions. Word has length 172 [2021-11-19 15:44:17,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:44:17,385 INFO L470 AbstractCegarLoop]: Abstraction has 3533 states and 4922 transitions. [2021-11-19 15:44:17,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-11-19 15:44:17,386 INFO L276 IsEmpty]: Start isEmpty. Operand 3533 states and 4922 transitions. [2021-11-19 15:44:17,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-19 15:44:17,405 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:44:17,406 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-19 15:44:17,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 15:44:17,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:44:17,623 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:44:17,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:44:17,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1102762759, now seen corresponding path program 1 times [2021-11-19 15:44:17,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:44:17,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [932087140] [2021-11-19 15:44:17,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:44:17,636 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:44:17,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:44:17,639 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:44:17,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 15:44:19,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:44:19,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 1987 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-19 15:44:19,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:44:22,091 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2021-11-19 15:44:22,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:44:24,894 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 6 proven. 32 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2021-11-19 15:44:24,895 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:44:24,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [932087140] [2021-11-19 15:44:24,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [932087140] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:44:24,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:44:24,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [10] total 19 [2021-11-19 15:44:24,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038527465] [2021-11-19 15:44:24,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:44:24,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 15:44:24,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:44:24,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 15:44:24,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-11-19 15:44:24,899 INFO L87 Difference]: Start difference. First operand 3533 states and 4922 transitions. Second operand has 12 states, 10 states have (on average 8.7) internal successors, (87), 9 states have internal predecessors, (87), 4 states have call successors, (27), 2 states have call predecessors, (27), 5 states have return successors, (22), 6 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-19 15:44:27,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:44:27,142 INFO L93 Difference]: Finished difference Result 7055 states and 9828 transitions. [2021-11-19 15:44:27,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 15:44:27,144 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 8.7) internal successors, (87), 9 states have internal predecessors, (87), 4 states have call successors, (27), 2 states have call predecessors, (27), 5 states have return successors, (22), 6 states have call predecessors, (22), 4 states have call successors, (22) Word has length 172 [2021-11-19 15:44:27,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:44:27,211 INFO L225 Difference]: With dead ends: 7055 [2021-11-19 15:44:27,211 INFO L226 Difference]: Without dead ends: 3537 [2021-11-19 15:44:27,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2021-11-19 15:44:27,249 INFO L933 BasicCegarLoop]: 2639 mSDtfsCounter, 72 mSDsluCounter, 18332 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 20971 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-19 15:44:27,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 20971 Invalid, 303 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-19 15:44:27,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3537 states. [2021-11-19 15:44:27,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3537 to 3533. [2021-11-19 15:44:27,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3533 states, 2298 states have (on average 1.238468233246301) internal successors, (2846), 2393 states have internal predecessors, (2846), 1033 states have call successors, (1033), 201 states have call predecessors, (1033), 201 states have return successors, (1042), 999 states have call predecessors, (1042), 1033 states have call successors, (1042) [2021-11-19 15:44:27,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3533 states to 3533 states and 4921 transitions. [2021-11-19 15:44:27,550 INFO L78 Accepts]: Start accepts. Automaton has 3533 states and 4921 transitions. Word has length 172 [2021-11-19 15:44:27,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:44:27,553 INFO L470 AbstractCegarLoop]: Abstraction has 3533 states and 4921 transitions. [2021-11-19 15:44:27,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 8.7) internal successors, (87), 9 states have internal predecessors, (87), 4 states have call successors, (27), 2 states have call predecessors, (27), 5 states have return successors, (22), 6 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-19 15:44:27,553 INFO L276 IsEmpty]: Start isEmpty. Operand 3533 states and 4921 transitions. [2021-11-19 15:44:27,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-19 15:44:27,559 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:44:27,560 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-19 15:44:27,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 15:44:27,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:44:27,787 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:44:27,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:44:27,788 INFO L85 PathProgramCache]: Analyzing trace with hash -102246426, now seen corresponding path program 1 times [2021-11-19 15:44:27,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:44:27,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [711454751] [2021-11-19 15:44:27,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:44:27,794 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:44:27,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:44:27,795 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:44:27,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 15:44:30,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:44:30,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 2010 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-19 15:44:30,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:44:31,492 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-11-19 15:44:31,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:44:32,884 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-11-19 15:44:32,884 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:44:32,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [711454751] [2021-11-19 15:44:32,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [711454751] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:44:32,885 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:44:32,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 14] imperfect sequences [] total 17 [2021-11-19 15:44:32,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642260852] [2021-11-19 15:44:32,886 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:44:32,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-19 15:44:32,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:44:32,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-19 15:44:32,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2021-11-19 15:44:32,888 INFO L87 Difference]: Start difference. First operand 3533 states and 4921 transitions. Second operand has 17 states, 16 states have (on average 6.0) internal successors, (96), 15 states have internal predecessors, (96), 6 states have call successors, (31), 2 states have call predecessors, (31), 6 states have return successors, (27), 7 states have call predecessors, (27), 6 states have call successors, (27) [2021-11-19 15:44:36,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:44:36,622 INFO L93 Difference]: Finished difference Result 7121 states and 9917 transitions. [2021-11-19 15:44:36,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-19 15:44:36,625 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 6.0) internal successors, (96), 15 states have internal predecessors, (96), 6 states have call successors, (31), 2 states have call predecessors, (31), 6 states have return successors, (27), 7 states have call predecessors, (27), 6 states have call successors, (27) Word has length 178 [2021-11-19 15:44:36,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:44:36,677 INFO L225 Difference]: With dead ends: 7121 [2021-11-19 15:44:36,677 INFO L226 Difference]: Without dead ends: 3605 [2021-11-19 15:44:36,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=119, Invalid=693, Unknown=0, NotChecked=0, Total=812 [2021-11-19 15:44:36,720 INFO L933 BasicCegarLoop]: 2653 mSDtfsCounter, 49 mSDsluCounter, 34371 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 37024 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:44:36,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 37024 Invalid, 607 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [43 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-19 15:44:36,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3605 states. [2021-11-19 15:44:36,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3605 to 3555. [2021-11-19 15:44:36,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3555 states, 2314 states have (on average 1.236819360414866) internal successors, (2862), 2409 states have internal predecessors, (2862), 1037 states have call successors, (1037), 201 states have call predecessors, (1037), 203 states have return successors, (1048), 1005 states have call predecessors, (1048), 1037 states have call successors, (1048) [2021-11-19 15:44:36,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3555 states to 3555 states and 4947 transitions. [2021-11-19 15:44:36,972 INFO L78 Accepts]: Start accepts. Automaton has 3555 states and 4947 transitions. Word has length 178 [2021-11-19 15:44:36,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:44:36,975 INFO L470 AbstractCegarLoop]: Abstraction has 3555 states and 4947 transitions. [2021-11-19 15:44:36,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 6.0) internal successors, (96), 15 states have internal predecessors, (96), 6 states have call successors, (31), 2 states have call predecessors, (31), 6 states have return successors, (27), 7 states have call predecessors, (27), 6 states have call successors, (27) [2021-11-19 15:44:36,976 INFO L276 IsEmpty]: Start isEmpty. Operand 3555 states and 4947 transitions. [2021-11-19 15:44:36,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-19 15:44:36,981 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:44:36,986 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-19 15:44:37,047 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-19 15:44:37,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:44:37,211 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:44:37,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:44:37,212 INFO L85 PathProgramCache]: Analyzing trace with hash 985438442, now seen corresponding path program 1 times [2021-11-19 15:44:37,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:44:37,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1157737335] [2021-11-19 15:44:37,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:44:37,216 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:44:37,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:44:37,222 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:44:37,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 15:44:39,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:44:39,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 2009 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-19 15:44:39,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:44:40,816 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 83 proven. 15 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-19 15:44:40,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:44:42,565 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2021-11-19 15:44:42,566 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:44:42,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1157737335] [2021-11-19 15:44:42,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1157737335] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:44:42,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1677677019] [2021-11-19 15:44:42,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:44:42,567 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:44:42,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:44:42,568 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:44:42,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-19 15:44:43,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:44:43,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 2009 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:44:43,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:44:44,605 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-11-19 15:44:44,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:44:45,181 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2021-11-19 15:44:45,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1677677019] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:44:45,181 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:44:45,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11, 11] total 14 [2021-11-19 15:44:45,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357192762] [2021-11-19 15:44:45,181 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:44:45,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:44:45,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:44:45,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:44:45,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-19 15:44:45,183 INFO L87 Difference]: Start difference. First operand 3555 states and 4947 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-19 15:44:47,448 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:44:47,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:44:47,684 INFO L93 Difference]: Finished difference Result 7141 states and 9947 transitions. [2021-11-19 15:44:47,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:44:47,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 180 [2021-11-19 15:44:47,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:44:47,735 INFO L225 Difference]: With dead ends: 7141 [2021-11-19 15:44:47,735 INFO L226 Difference]: Without dead ends: 3605 [2021-11-19 15:44:47,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 716 GetRequests, 704 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-19 15:44:47,767 INFO L933 BasicCegarLoop]: 2669 mSDtfsCounter, 34 mSDsluCounter, 2635 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 5304 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:44:47,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 5304 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 17 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2021-11-19 15:44:47,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3605 states. [2021-11-19 15:44:47,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3605 to 3597. [2021-11-19 15:44:48,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3597 states, 2344 states have (on average 1.235494880546075) internal successors, (2896), 2439 states have internal predecessors, (2896), 1049 states have call successors, (1049), 201 states have call predecessors, (1049), 203 states have return successors, (1060), 1017 states have call predecessors, (1060), 1049 states have call successors, (1060) [2021-11-19 15:44:48,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3597 states to 3597 states and 5005 transitions. [2021-11-19 15:44:48,056 INFO L78 Accepts]: Start accepts. Automaton has 3597 states and 5005 transitions. Word has length 180 [2021-11-19 15:44:48,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:44:48,059 INFO L470 AbstractCegarLoop]: Abstraction has 3597 states and 5005 transitions. [2021-11-19 15:44:48,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-19 15:44:48,061 INFO L276 IsEmpty]: Start isEmpty. Operand 3597 states and 5005 transitions. [2021-11-19 15:44:48,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-19 15:44:48,068 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:44:48,069 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-19 15:44:48,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-11-19 15:44:48,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 15:44:48,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:44:48,485 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:44:48,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:44:48,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1892290033, now seen corresponding path program 1 times [2021-11-19 15:44:48,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:44:48,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1356696071] [2021-11-19 15:44:48,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:44:48,491 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:44:48,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:44:48,492 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:44:48,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 15:44:50,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:44:50,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 2029 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-19 15:44:50,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:44:51,821 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-11-19 15:44:51,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:44:53,021 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-11-19 15:44:53,021 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:44:53,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1356696071] [2021-11-19 15:44:53,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1356696071] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:44:53,022 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:44:53,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15, 15] imperfect sequences [] total 18 [2021-11-19 15:44:53,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520817188] [2021-11-19 15:44:53,022 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:44:53,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-19 15:44:53,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:44:53,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-19 15:44:53,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-11-19 15:44:53,024 INFO L87 Difference]: Start difference. First operand 3597 states and 5005 transitions. Second operand has 18 states, 17 states have (on average 6.0) internal successors, (102), 16 states have internal predecessors, (102), 7 states have call successors, (32), 2 states have call predecessors, (32), 6 states have return successors, (28), 8 states have call predecessors, (28), 7 states have call successors, (28) [2021-11-19 15:44:56,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:44:56,629 INFO L93 Difference]: Finished difference Result 7386 states and 10296 transitions. [2021-11-19 15:44:56,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-19 15:44:56,629 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 6.0) internal successors, (102), 16 states have internal predecessors, (102), 7 states have call successors, (32), 2 states have call predecessors, (32), 6 states have return successors, (28), 8 states have call predecessors, (28), 7 states have call successors, (28) Word has length 186 [2021-11-19 15:44:56,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:44:56,665 INFO L225 Difference]: With dead ends: 7386 [2021-11-19 15:44:56,666 INFO L226 Difference]: Without dead ends: 3806 [2021-11-19 15:44:56,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=125, Invalid=805, Unknown=0, NotChecked=0, Total=930 [2021-11-19 15:44:56,689 INFO L933 BasicCegarLoop]: 2729 mSDtfsCounter, 182 mSDsluCounter, 38002 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 40731 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:44:56,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 40731 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-19 15:44:56,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3806 states. [2021-11-19 15:44:56,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3806 to 3601. [2021-11-19 15:44:56,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3601 states, 2346 states have (on average 1.2352941176470589) internal successors, (2898), 2443 states have internal predecessors, (2898), 1049 states have call successors, (1049), 201 states have call predecessors, (1049), 205 states have return successors, (1064), 1017 states have call predecessors, (1064), 1049 states have call successors, (1064) [2021-11-19 15:44:57,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3601 states to 3601 states and 5011 transitions. [2021-11-19 15:44:57,026 INFO L78 Accepts]: Start accepts. Automaton has 3601 states and 5011 transitions. Word has length 186 [2021-11-19 15:44:57,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:44:57,028 INFO L470 AbstractCegarLoop]: Abstraction has 3601 states and 5011 transitions. [2021-11-19 15:44:57,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 6.0) internal successors, (102), 16 states have internal predecessors, (102), 7 states have call successors, (32), 2 states have call predecessors, (32), 6 states have return successors, (28), 8 states have call predecessors, (28), 7 states have call successors, (28) [2021-11-19 15:44:57,028 INFO L276 IsEmpty]: Start isEmpty. Operand 3601 states and 5011 transitions. [2021-11-19 15:44:57,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2021-11-19 15:44:57,034 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:44:57,035 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:44:57,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 15:44:57,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:44:57,253 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:44:57,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:44:57,254 INFO L85 PathProgramCache]: Analyzing trace with hash 699960433, now seen corresponding path program 1 times [2021-11-19 15:44:57,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:44:57,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [910543923] [2021-11-19 15:44:57,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:44:57,258 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:44:57,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:44:57,261 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:44:57,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 15:44:59,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:44:59,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 2378 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-19 15:44:59,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:45:01,441 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 95 proven. 15 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-11-19 15:45:01,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:45:02,828 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-11-19 15:45:02,828 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:45:02,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [910543923] [2021-11-19 15:45:02,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [910543923] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:45:02,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [911803650] [2021-11-19 15:45:02,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:45:02,829 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:45:02,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:45:02,830 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:45:02,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-19 15:45:04,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:45:04,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 2378 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:45:04,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:45:06,103 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-19 15:45:06,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:45:07,692 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-19 15:45:07,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [911803650] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:45:07,692 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:45:07,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [11, 11] total 15 [2021-11-19 15:45:07,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13662093] [2021-11-19 15:45:07,693 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:45:07,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:45:07,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:45:07,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:45:07,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-19 15:45:07,695 INFO L87 Difference]: Start difference. First operand 3601 states and 5011 transitions. Second operand has 5 states, 5 states have (on average 47.4) internal successors, (237), 5 states have internal predecessors, (237), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-19 15:45:13,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:45:13,664 INFO L93 Difference]: Finished difference Result 7183 states and 10046 transitions. [2021-11-19 15:45:13,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:45:13,665 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 47.4) internal successors, (237), 5 states have internal predecessors, (237), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) Word has length 246 [2021-11-19 15:45:13,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:45:13,711 INFO L225 Difference]: With dead ends: 7183 [2021-11-19 15:45:13,711 INFO L226 Difference]: Without dead ends: 3601 [2021-11-19 15:45:13,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 980 GetRequests, 967 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-19 15:45:13,733 INFO L933 BasicCegarLoop]: 2667 mSDtfsCounter, 3948 mSDsluCounter, 1534 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 1106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3948 SdHoareTripleChecker+Valid, 4201 SdHoareTripleChecker+Invalid, 2241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1106 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-11-19 15:45:13,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3948 Valid, 4201 Invalid, 2241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1106 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2021-11-19 15:45:13,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3601 states. [2021-11-19 15:45:14,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3601 to 3601. [2021-11-19 15:45:14,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3601 states, 2346 states have (on average 1.2344416027280478) internal successors, (2896), 2443 states have internal predecessors, (2896), 1049 states have call successors, (1049), 201 states have call predecessors, (1049), 205 states have return successors, (1064), 1017 states have call predecessors, (1064), 1049 states have call successors, (1064) [2021-11-19 15:45:14,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3601 states to 3601 states and 5009 transitions. [2021-11-19 15:45:14,083 INFO L78 Accepts]: Start accepts. Automaton has 3601 states and 5009 transitions. Word has length 246 [2021-11-19 15:45:14,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:45:14,084 INFO L470 AbstractCegarLoop]: Abstraction has 3601 states and 5009 transitions. [2021-11-19 15:45:14,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.4) internal successors, (237), 5 states have internal predecessors, (237), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-19 15:45:14,084 INFO L276 IsEmpty]: Start isEmpty. Operand 3601 states and 5009 transitions. [2021-11-19 15:45:14,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2021-11-19 15:45:14,091 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:45:14,091 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:45:14,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-19 15:45:14,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 15:45:14,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:45:14,510 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:45:14,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:45:14,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1089311808, now seen corresponding path program 1 times [2021-11-19 15:45:14,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:45:14,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [244857433] [2021-11-19 15:45:14,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:45:14,514 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:45:14,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:45:14,515 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:45:14,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 15:45:17,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:45:17,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 2379 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-19 15:45:17,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:45:18,737 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 95 proven. 15 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-11-19 15:45:18,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:45:20,141 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-11-19 15:45:20,142 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:45:20,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [244857433] [2021-11-19 15:45:20,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [244857433] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:45:20,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1032480686] [2021-11-19 15:45:20,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:45:20,143 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:45:20,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:45:20,145 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:45:20,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-19 15:45:21,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:45:21,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 2379 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:45:21,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:45:23,633 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-19 15:45:23,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:45:25,031 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-19 15:45:25,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1032480686] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:45:25,032 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:45:25,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [11, 11] total 15 [2021-11-19 15:45:25,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329532570] [2021-11-19 15:45:25,032 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:45:25,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:45:25,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:45:25,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:45:25,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-19 15:45:25,034 INFO L87 Difference]: Start difference. First operand 3601 states and 5009 transitions. Second operand has 5 states, 5 states have (on average 47.8) internal successors, (239), 5 states have internal predecessors, (239), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-19 15:45:30,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:45:30,762 INFO L93 Difference]: Finished difference Result 7183 states and 10042 transitions. [2021-11-19 15:45:30,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:45:30,763 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 47.8) internal successors, (239), 5 states have internal predecessors, (239), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) Word has length 247 [2021-11-19 15:45:30,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:45:30,804 INFO L225 Difference]: With dead ends: 7183 [2021-11-19 15:45:30,804 INFO L226 Difference]: Without dead ends: 3601 [2021-11-19 15:45:30,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 984 GetRequests, 971 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-19 15:45:30,827 INFO L933 BasicCegarLoop]: 2666 mSDtfsCounter, 3945 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 1106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3945 SdHoareTripleChecker+Valid, 4199 SdHoareTripleChecker+Invalid, 2241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1106 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-11-19 15:45:30,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3945 Valid, 4199 Invalid, 2241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1106 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2021-11-19 15:45:30,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3601 states. [2021-11-19 15:45:31,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3601 to 3601. [2021-11-19 15:45:31,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3601 states, 2346 states have (on average 1.2335890878090368) internal successors, (2894), 2443 states have internal predecessors, (2894), 1049 states have call successors, (1049), 201 states have call predecessors, (1049), 205 states have return successors, (1064), 1017 states have call predecessors, (1064), 1049 states have call successors, (1064) [2021-11-19 15:45:31,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3601 states to 3601 states and 5007 transitions. [2021-11-19 15:45:31,107 INFO L78 Accepts]: Start accepts. Automaton has 3601 states and 5007 transitions. Word has length 247 [2021-11-19 15:45:31,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:45:31,110 INFO L470 AbstractCegarLoop]: Abstraction has 3601 states and 5007 transitions. [2021-11-19 15:45:31,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.8) internal successors, (239), 5 states have internal predecessors, (239), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-19 15:45:31,111 INFO L276 IsEmpty]: Start isEmpty. Operand 3601 states and 5007 transitions. [2021-11-19 15:45:31,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-11-19 15:45:31,118 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:45:31,119 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:45:31,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-19 15:45:31,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 15:45:31,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:45:31,544 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:45:31,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:45:31,545 INFO L85 PathProgramCache]: Analyzing trace with hash -607659827, now seen corresponding path program 1 times [2021-11-19 15:45:31,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:45:31,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [367868501] [2021-11-19 15:45:31,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:45:31,547 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:45:31,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:45:31,548 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:45:31,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 15:45:33,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:45:34,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 2380 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-19 15:45:34,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:45:35,463 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 95 proven. 15 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-11-19 15:45:35,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:45:36,724 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-11-19 15:45:36,724 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:45:36,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [367868501] [2021-11-19 15:45:36,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [367868501] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:45:36,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1798389237] [2021-11-19 15:45:36,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:45:36,725 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:45:36,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:45:36,726 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:45:36,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-19 15:45:37,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:45:37,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 2380 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:45:37,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:45:39,768 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-19 15:45:39,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:45:40,990 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-19 15:45:40,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1798389237] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:45:40,990 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:45:40,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [11, 11] total 15 [2021-11-19 15:45:40,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068182665] [2021-11-19 15:45:40,991 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:45:40,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:45:40,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:45:40,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:45:40,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-19 15:45:40,994 INFO L87 Difference]: Start difference. First operand 3601 states and 5007 transitions. Second operand has 5 states, 5 states have (on average 48.2) internal successors, (241), 5 states have internal predecessors, (241), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-19 15:45:46,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:45:46,356 INFO L93 Difference]: Finished difference Result 7183 states and 10038 transitions. [2021-11-19 15:45:46,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:45:46,357 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.2) internal successors, (241), 5 states have internal predecessors, (241), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) Word has length 248 [2021-11-19 15:45:46,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:45:46,389 INFO L225 Difference]: With dead ends: 7183 [2021-11-19 15:45:46,389 INFO L226 Difference]: Without dead ends: 3601 [2021-11-19 15:45:46,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 988 GetRequests, 975 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-19 15:45:46,407 INFO L933 BasicCegarLoop]: 2665 mSDtfsCounter, 2525 mSDsluCounter, 1532 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2525 SdHoareTripleChecker+Valid, 4197 SdHoareTripleChecker+Invalid, 1170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:45:46,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2525 Valid, 4197 Invalid, 1170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-11-19 15:45:46,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3601 states. [2021-11-19 15:45:46,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3601 to 3601. [2021-11-19 15:45:46,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3601 states, 2346 states have (on average 1.2327365728900255) internal successors, (2892), 2443 states have internal predecessors, (2892), 1049 states have call successors, (1049), 201 states have call predecessors, (1049), 205 states have return successors, (1064), 1017 states have call predecessors, (1064), 1049 states have call successors, (1064) [2021-11-19 15:45:46,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3601 states to 3601 states and 5005 transitions. [2021-11-19 15:45:46,661 INFO L78 Accepts]: Start accepts. Automaton has 3601 states and 5005 transitions. Word has length 248 [2021-11-19 15:45:46,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:45:46,662 INFO L470 AbstractCegarLoop]: Abstraction has 3601 states and 5005 transitions. [2021-11-19 15:45:46,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.2) internal successors, (241), 5 states have internal predecessors, (241), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-19 15:45:46,663 INFO L276 IsEmpty]: Start isEmpty. Operand 3601 states and 5005 transitions. [2021-11-19 15:45:46,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-11-19 15:45:46,669 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:45:46,670 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:45:46,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 15:45:46,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-19 15:45:47,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:45:47,083 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:45:47,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:45:47,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1553166300, now seen corresponding path program 1 times [2021-11-19 15:45:47,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:45:47,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1548056082] [2021-11-19 15:45:47,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:45:47,085 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:45:47,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:45:47,086 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:45:47,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 15:45:49,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:45:49,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 2381 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-19 15:45:49,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:45:51,012 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 95 proven. 15 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-11-19 15:45:51,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:45:52,371 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-11-19 15:45:52,371 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:45:52,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1548056082] [2021-11-19 15:45:52,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1548056082] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:45:52,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1702833025] [2021-11-19 15:45:52,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:45:52,372 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:45:52,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:45:52,391 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:45:52,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-19 15:45:53,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:45:53,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 2381 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:45:53,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:45:55,671 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-19 15:45:55,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:45:56,819 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-19 15:45:56,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1702833025] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:45:56,819 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:45:56,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [11, 11] total 15 [2021-11-19 15:45:56,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003727618] [2021-11-19 15:45:56,820 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:45:56,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:45:56,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:45:56,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:45:56,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-19 15:45:56,822 INFO L87 Difference]: Start difference. First operand 3601 states and 5005 transitions. Second operand has 5 states, 5 states have (on average 48.6) internal successors, (243), 5 states have internal predecessors, (243), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-19 15:46:02,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:46:02,063 INFO L93 Difference]: Finished difference Result 7183 states and 10034 transitions. [2021-11-19 15:46:02,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:46:02,064 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.6) internal successors, (243), 5 states have internal predecessors, (243), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) Word has length 249 [2021-11-19 15:46:02,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:46:02,091 INFO L225 Difference]: With dead ends: 7183 [2021-11-19 15:46:02,091 INFO L226 Difference]: Without dead ends: 3601 [2021-11-19 15:46:02,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 992 GetRequests, 979 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-19 15:46:02,114 INFO L933 BasicCegarLoop]: 2664 mSDtfsCounter, 2524 mSDsluCounter, 1531 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2524 SdHoareTripleChecker+Valid, 4195 SdHoareTripleChecker+Invalid, 1170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:46:02,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2524 Valid, 4195 Invalid, 1170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-11-19 15:46:02,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3601 states. [2021-11-19 15:46:02,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3601 to 3601. [2021-11-19 15:46:02,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3601 states, 2346 states have (on average 1.2318840579710144) internal successors, (2890), 2443 states have internal predecessors, (2890), 1049 states have call successors, (1049), 201 states have call predecessors, (1049), 205 states have return successors, (1064), 1017 states have call predecessors, (1064), 1049 states have call successors, (1064) [2021-11-19 15:46:02,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3601 states to 3601 states and 5003 transitions. [2021-11-19 15:46:02,453 INFO L78 Accepts]: Start accepts. Automaton has 3601 states and 5003 transitions. Word has length 249 [2021-11-19 15:46:02,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:46:02,454 INFO L470 AbstractCegarLoop]: Abstraction has 3601 states and 5003 transitions. [2021-11-19 15:46:02,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.6) internal successors, (243), 5 states have internal predecessors, (243), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-19 15:46:02,454 INFO L276 IsEmpty]: Start isEmpty. Operand 3601 states and 5003 transitions. [2021-11-19 15:46:02,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-11-19 15:46:02,460 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:46:02,461 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:46:02,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 15:46:02,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-19 15:46:02,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:46:02,883 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:46:02,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:46:02,883 INFO L85 PathProgramCache]: Analyzing trace with hash -66183895, now seen corresponding path program 1 times [2021-11-19 15:46:02,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:46:02,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [164895266] [2021-11-19 15:46:02,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:46:02,886 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:46:02,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:46:02,888 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:46:02,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 15:46:05,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:46:05,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 2382 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-19 15:46:05,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:46:06,824 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 95 proven. 15 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-11-19 15:46:06,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:46:08,053 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-11-19 15:46:08,053 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:46:08,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [164895266] [2021-11-19 15:46:08,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [164895266] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:46:08,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [202688682] [2021-11-19 15:46:08,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:46:08,054 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:46:08,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:46:08,055 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:46:08,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-19 15:46:09,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:46:09,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 2382 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:46:09,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:46:11,154 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-19 15:46:11,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:46:12,433 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-19 15:46:12,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [202688682] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:46:12,434 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:46:12,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [11, 11] total 15 [2021-11-19 15:46:12,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128338423] [2021-11-19 15:46:12,435 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:46:12,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:46:12,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:46:12,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:46:12,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-19 15:46:12,438 INFO L87 Difference]: Start difference. First operand 3601 states and 5003 transitions. Second operand has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-19 15:46:18,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:46:18,130 INFO L93 Difference]: Finished difference Result 7183 states and 10030 transitions. [2021-11-19 15:46:18,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:46:18,131 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) Word has length 250 [2021-11-19 15:46:18,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:46:18,158 INFO L225 Difference]: With dead ends: 7183 [2021-11-19 15:46:18,158 INFO L226 Difference]: Without dead ends: 3601 [2021-11-19 15:46:18,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 996 GetRequests, 983 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-19 15:46:18,178 INFO L933 BasicCegarLoop]: 2663 mSDtfsCounter, 3936 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 1106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3936 SdHoareTripleChecker+Valid, 4193 SdHoareTripleChecker+Invalid, 2241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1106 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-19 15:46:18,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3936 Valid, 4193 Invalid, 2241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1106 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2021-11-19 15:46:18,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3601 states. [2021-11-19 15:46:18,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3601 to 3601. [2021-11-19 15:46:18,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3601 states, 2346 states have (on average 1.2310315430520034) internal successors, (2888), 2443 states have internal predecessors, (2888), 1049 states have call successors, (1049), 201 states have call predecessors, (1049), 205 states have return successors, (1064), 1017 states have call predecessors, (1064), 1049 states have call successors, (1064) [2021-11-19 15:46:18,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3601 states to 3601 states and 5001 transitions. [2021-11-19 15:46:18,546 INFO L78 Accepts]: Start accepts. Automaton has 3601 states and 5001 transitions. Word has length 250 [2021-11-19 15:46:18,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:46:18,548 INFO L470 AbstractCegarLoop]: Abstraction has 3601 states and 5001 transitions. [2021-11-19 15:46:18,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-19 15:46:18,549 INFO L276 IsEmpty]: Start isEmpty. Operand 3601 states and 5001 transitions. [2021-11-19 15:46:18,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-11-19 15:46:18,555 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:46:18,555 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:46:18,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 15:46:18,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-19 15:46:18,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:46:18,971 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:46:18,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:46:18,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1388084216, now seen corresponding path program 1 times [2021-11-19 15:46:18,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:46:18,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [755328141] [2021-11-19 15:46:18,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:46:18,974 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:46:18,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:46:18,975 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:46:18,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 15:46:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:46:21,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 2383 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-19 15:46:21,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:46:22,711 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 95 proven. 15 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-11-19 15:46:22,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:46:24,010 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-11-19 15:46:24,010 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:46:24,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [755328141] [2021-11-19 15:46:24,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [755328141] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:46:24,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1338734619] [2021-11-19 15:46:24,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:46:24,010 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:46:24,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:46:24,011 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:46:24,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-19 15:46:25,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:46:25,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 2383 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:46:25,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:46:27,153 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-19 15:46:27,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:46:28,447 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-19 15:46:28,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1338734619] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:46:28,447 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:46:28,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [11, 11] total 15 [2021-11-19 15:46:28,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379689108] [2021-11-19 15:46:28,448 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:46:28,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:46:28,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:46:28,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:46:28,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-19 15:46:28,451 INFO L87 Difference]: Start difference. First operand 3601 states and 5001 transitions. Second operand has 5 states, 5 states have (on average 49.4) internal successors, (247), 5 states have internal predecessors, (247), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-19 15:46:34,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:46:34,521 INFO L93 Difference]: Finished difference Result 7183 states and 10026 transitions. [2021-11-19 15:46:34,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:46:34,522 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 49.4) internal successors, (247), 5 states have internal predecessors, (247), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) Word has length 251 [2021-11-19 15:46:34,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:46:34,550 INFO L225 Difference]: With dead ends: 7183 [2021-11-19 15:46:34,551 INFO L226 Difference]: Without dead ends: 3601 [2021-11-19 15:46:34,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1000 GetRequests, 987 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-19 15:46:34,573 INFO L933 BasicCegarLoop]: 2662 mSDtfsCounter, 3933 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 1106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3933 SdHoareTripleChecker+Valid, 4191 SdHoareTripleChecker+Invalid, 2241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1106 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-11-19 15:46:34,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3933 Valid, 4191 Invalid, 2241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1106 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2021-11-19 15:46:34,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3601 states. [2021-11-19 15:46:34,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3601 to 3601. [2021-11-19 15:46:34,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3601 states, 2346 states have (on average 1.2301790281329923) internal successors, (2886), 2443 states have internal predecessors, (2886), 1049 states have call successors, (1049), 201 states have call predecessors, (1049), 205 states have return successors, (1064), 1017 states have call predecessors, (1064), 1049 states have call successors, (1064) [2021-11-19 15:46:35,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3601 states to 3601 states and 4999 transitions. [2021-11-19 15:46:35,010 INFO L78 Accepts]: Start accepts. Automaton has 3601 states and 4999 transitions. Word has length 251 [2021-11-19 15:46:35,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:46:35,011 INFO L470 AbstractCegarLoop]: Abstraction has 3601 states and 4999 transitions. [2021-11-19 15:46:35,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.4) internal successors, (247), 5 states have internal predecessors, (247), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-19 15:46:35,012 INFO L276 IsEmpty]: Start isEmpty. Operand 3601 states and 4999 transitions. [2021-11-19 15:46:35,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2021-11-19 15:46:35,017 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:46:35,017 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:46:35,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-19 15:46:35,256 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2021-11-19 15:46:35,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:46:35,443 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:46:35,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:46:35,444 INFO L85 PathProgramCache]: Analyzing trace with hash -659727995, now seen corresponding path program 1 times [2021-11-19 15:46:35,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:46:35,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1427689725] [2021-11-19 15:46:35,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:46:35,446 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:46:35,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:46:35,447 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:46:35,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-19 15:46:37,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:46:38,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 2384 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-19 15:46:38,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:46:39,490 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 95 proven. 15 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-11-19 15:46:39,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:46:40,844 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-11-19 15:46:40,844 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:46:40,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1427689725] [2021-11-19 15:46:40,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1427689725] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:46:40,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [474452121] [2021-11-19 15:46:40,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:46:40,845 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:46:40,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:46:40,846 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:46:40,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-19 15:46:42,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:46:42,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 2384 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:46:42,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:46:43,055 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-11-19 15:46:43,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:46:43,774 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-19 15:46:43,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [474452121] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:46:43,774 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:46:43,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [11, 11] total 16 [2021-11-19 15:46:43,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74866784] [2021-11-19 15:46:43,775 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:46:43,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:46:43,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:46:43,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:46:43,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-11-19 15:46:43,777 INFO L87 Difference]: Start difference. First operand 3601 states and 4999 transitions. Second operand has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-11-19 15:46:44,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:46:44,556 INFO L93 Difference]: Finished difference Result 7341 states and 10219 transitions. [2021-11-19 15:46:44,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 15:46:44,557 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 252 [2021-11-19 15:46:44,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:46:44,587 INFO L225 Difference]: With dead ends: 7341 [2021-11-19 15:46:44,587 INFO L226 Difference]: Without dead ends: 3759 [2021-11-19 15:46:44,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1006 GetRequests, 990 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-11-19 15:46:44,610 INFO L933 BasicCegarLoop]: 2770 mSDtfsCounter, 163 mSDsluCounter, 8099 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 10869 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 15:46:44,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 10869 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 15:46:44,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3759 states. [2021-11-19 15:46:44,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3759 to 3617. [2021-11-19 15:46:44,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3617 states, 2358 states have (on average 1.2307039864291773) internal successors, (2902), 2457 states have internal predecessors, (2902), 1053 states have call successors, (1053), 201 states have call predecessors, (1053), 205 states have return successors, (1068), 1021 states have call predecessors, (1068), 1053 states have call successors, (1068) [2021-11-19 15:46:44,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3617 states to 3617 states and 5023 transitions. [2021-11-19 15:46:44,938 INFO L78 Accepts]: Start accepts. Automaton has 3617 states and 5023 transitions. Word has length 252 [2021-11-19 15:46:44,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:46:44,939 INFO L470 AbstractCegarLoop]: Abstraction has 3617 states and 5023 transitions. [2021-11-19 15:46:44,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-11-19 15:46:44,940 INFO L276 IsEmpty]: Start isEmpty. Operand 3617 states and 5023 transitions. [2021-11-19 15:46:44,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-11-19 15:46:44,945 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:46:44,945 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:46:44,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-19 15:46:45,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-19 15:46:45,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:46:45,364 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:46:45,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:46:45,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1593161124, now seen corresponding path program 1 times [2021-11-19 15:46:45,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:46:45,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [774067601] [2021-11-19 15:46:45,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:46:45,367 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:46:45,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:46:45,368 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:46:45,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-19 15:46:47,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:46:47,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 2420 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-19 15:46:47,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:46:49,518 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 95 proven. 15 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-11-19 15:46:49,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:46:50,967 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-11-19 15:46:50,967 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:46:50,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [774067601] [2021-11-19 15:46:50,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [774067601] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:46:50,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1342520483] [2021-11-19 15:46:50,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:46:50,968 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:46:50,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:46:50,975 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:46:50,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-19 15:46:52,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:46:52,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 2420 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:46:52,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:46:53,097 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-11-19 15:46:53,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:46:53,652 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-19 15:46:53,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1342520483] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:46:53,652 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:46:53,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11, 11] total 13 [2021-11-19 15:46:53,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546082363] [2021-11-19 15:46:53,653 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:46:53,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:46:53,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:46:53,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:46:53,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-11-19 15:46:53,655 INFO L87 Difference]: Start difference. First operand 3617 states and 5023 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2021-11-19 15:46:53,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:46:53,920 INFO L93 Difference]: Finished difference Result 7599 states and 10605 transitions. [2021-11-19 15:46:53,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:46:53,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 262 [2021-11-19 15:46:53,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:46:53,953 INFO L225 Difference]: With dead ends: 7599 [2021-11-19 15:46:53,953 INFO L226 Difference]: Without dead ends: 4001 [2021-11-19 15:46:53,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1044 GetRequests, 1033 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-11-19 15:46:53,974 INFO L933 BasicCegarLoop]: 2756 mSDtfsCounter, 205 mSDsluCounter, 2663 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 5419 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:46:53,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 5419 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:46:53,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4001 states. [2021-11-19 15:46:54,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4001 to 3619. [2021-11-19 15:46:54,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3619 states, 2360 states have (on average 1.2309322033898304) internal successors, (2905), 2459 states have internal predecessors, (2905), 1053 states have call successors, (1053), 201 states have call predecessors, (1053), 205 states have return successors, (1068), 1021 states have call predecessors, (1068), 1053 states have call successors, (1068) [2021-11-19 15:46:54,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3619 states to 3619 states and 5026 transitions. [2021-11-19 15:46:54,375 INFO L78 Accepts]: Start accepts. Automaton has 3619 states and 5026 transitions. Word has length 262 [2021-11-19 15:46:54,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:46:54,375 INFO L470 AbstractCegarLoop]: Abstraction has 3619 states and 5026 transitions. [2021-11-19 15:46:54,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2021-11-19 15:46:54,376 INFO L276 IsEmpty]: Start isEmpty. Operand 3619 states and 5026 transitions. [2021-11-19 15:46:54,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-11-19 15:46:54,381 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:46:54,382 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:46:54,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-11-19 15:46:54,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-19 15:46:54,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:46:54,799 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:46:54,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:46:54,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1621661414, now seen corresponding path program 1 times [2021-11-19 15:46:54,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:46:54,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [842435264] [2021-11-19 15:46:54,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:46:54,803 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:46:54,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:46:54,805 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:46:54,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-19 15:46:57,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:46:57,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 2420 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-19 15:46:57,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:46:59,057 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 95 proven. 15 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-11-19 15:46:59,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:47:00,696 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-11-19 15:47:00,696 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:47:00,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [842435264] [2021-11-19 15:47:00,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [842435264] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:47:00,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [850646157] [2021-11-19 15:47:00,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:00,697 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:47:00,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:47:00,699 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:47:00,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-11-19 15:47:02,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:02,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 2420 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 15:47:02,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:47:04,322 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-19 15:47:04,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:47:05,702 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-19 15:47:05,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [850646157] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:47:05,702 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:47:05,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [11, 11] total 15 [2021-11-19 15:47:05,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752347569] [2021-11-19 15:47:05,703 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:47:05,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:47:05,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:47:05,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:47:05,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-19 15:47:05,706 INFO L87 Difference]: Start difference. First operand 3619 states and 5026 transitions. Second operand has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 3 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (58), 4 states have call predecessors, (58), 3 states have call successors, (58) [2021-11-19 15:47:19,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:19,818 INFO L93 Difference]: Finished difference Result 10249 states and 14659 transitions. [2021-11-19 15:47:19,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:47:19,818 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 3 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (58), 4 states have call predecessors, (58), 3 states have call successors, (58) Word has length 262 [2021-11-19 15:47:19,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:19,897 INFO L225 Difference]: With dead ends: 10249 [2021-11-19 15:47:19,897 INFO L226 Difference]: Without dead ends: 6649 [2021-11-19 15:47:19,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1044 GetRequests, 1031 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-19 15:47:19,924 INFO L933 BasicCegarLoop]: 4955 mSDtfsCounter, 4802 mSDsluCounter, 4225 mSDsCounter, 0 mSdLazyCounter, 3405 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4802 SdHoareTripleChecker+Valid, 9180 SdHoareTripleChecker+Invalid, 3446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 3405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:19,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4802 Valid, 9180 Invalid, 3446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 3405 Invalid, 0 Unknown, 0 Unchecked, 13.5s Time] [2021-11-19 15:47:19,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6649 states. [2021-11-19 15:47:20,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6649 to 6639. [2021-11-19 15:47:20,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6639 states, 4316 states have (on average 1.2254402224281742) internal successors, (5289), 4512 states have internal predecessors, (5289), 1927 states have call successors, (1927), 397 states have call predecessors, (1927), 395 states have return successors, (2333), 1837 states have call predecessors, (2333), 1927 states have call successors, (2333) [2021-11-19 15:47:20,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6639 states to 6639 states and 9549 transitions. [2021-11-19 15:47:20,636 INFO L78 Accepts]: Start accepts. Automaton has 6639 states and 9549 transitions. Word has length 262 [2021-11-19 15:47:20,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:20,638 INFO L470 AbstractCegarLoop]: Abstraction has 6639 states and 9549 transitions. [2021-11-19 15:47:20,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 3 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (58), 4 states have call predecessors, (58), 3 states have call successors, (58) [2021-11-19 15:47:20,638 INFO L276 IsEmpty]: Start isEmpty. Operand 6639 states and 9549 transitions. [2021-11-19 15:47:20,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2021-11-19 15:47:20,643 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:20,644 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:47:20,662 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (25)] Ended with exit code 0 [2021-11-19 15:47:20,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-19 15:47:21,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:47:21,070 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:47:21,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:21,071 INFO L85 PathProgramCache]: Analyzing trace with hash 641954591, now seen corresponding path program 1 times [2021-11-19 15:47:21,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:47:21,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2141776753] [2021-11-19 15:47:21,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:21,074 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:47:21,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:47:21,076 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:47:21,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-19 15:47:23,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:23,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 2421 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-19 15:47:23,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:47:25,480 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 95 proven. 15 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-11-19 15:47:25,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:47:26,897 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-11-19 15:47:26,897 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:47:26,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2141776753] [2021-11-19 15:47:26,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2141776753] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:47:26,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [956563818] [2021-11-19 15:47:26,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:26,898 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:47:26,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:47:26,899 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:47:26,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2021-11-19 15:47:28,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:28,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 2421 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:47:28,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:47:30,548 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-19 15:47:30,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:47:32,019 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-19 15:47:32,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [956563818] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:47:32,020 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:47:32,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [11, 11] total 15 [2021-11-19 15:47:32,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619017751] [2021-11-19 15:47:32,021 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:47:32,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:47:32,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:47:32,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:47:32,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-19 15:47:32,024 INFO L87 Difference]: Start difference. First operand 6639 states and 9549 transitions. Second operand has 5 states, 5 states have (on average 53.4) internal successors, (267), 5 states have internal predecessors, (267), 3 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (58), 4 states have call predecessors, (58), 3 states have call successors, (58) [2021-11-19 15:47:38,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:38,004 INFO L93 Difference]: Finished difference Result 13259 states and 19167 transitions. [2021-11-19 15:47:38,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:47:38,005 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 53.4) internal successors, (267), 5 states have internal predecessors, (267), 3 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (58), 4 states have call predecessors, (58), 3 states have call successors, (58) Word has length 263 [2021-11-19 15:47:38,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:38,071 INFO L225 Difference]: With dead ends: 13259 [2021-11-19 15:47:38,071 INFO L226 Difference]: Without dead ends: 6639 [2021-11-19 15:47:38,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1048 GetRequests, 1035 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-19 15:47:38,118 INFO L933 BasicCegarLoop]: 2661 mSDtfsCounter, 2513 mSDsluCounter, 1528 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2513 SdHoareTripleChecker+Valid, 4189 SdHoareTripleChecker+Invalid, 1171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:38,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2513 Valid, 4189 Invalid, 1171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-11-19 15:47:38,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6639 states. [2021-11-19 15:47:38,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6639 to 6639. [2021-11-19 15:47:38,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6639 states, 4316 states have (on average 1.2249768303985171) internal successors, (5287), 4512 states have internal predecessors, (5287), 1927 states have call successors, (1927), 397 states have call predecessors, (1927), 395 states have return successors, (2333), 1837 states have call predecessors, (2333), 1927 states have call successors, (2333) [2021-11-19 15:47:38,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6639 states to 6639 states and 9547 transitions. [2021-11-19 15:47:38,946 INFO L78 Accepts]: Start accepts. Automaton has 6639 states and 9547 transitions. Word has length 263 [2021-11-19 15:47:38,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:38,947 INFO L470 AbstractCegarLoop]: Abstraction has 6639 states and 9547 transitions. [2021-11-19 15:47:38,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.4) internal successors, (267), 5 states have internal predecessors, (267), 3 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (58), 4 states have call predecessors, (58), 3 states have call successors, (58) [2021-11-19 15:47:38,948 INFO L276 IsEmpty]: Start isEmpty. Operand 6639 states and 9547 transitions. [2021-11-19 15:47:38,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2021-11-19 15:47:38,954 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:38,954 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:47:39,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-19 15:47:39,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2021-11-19 15:47:39,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:47:39,369 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:47:39,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:39,370 INFO L85 PathProgramCache]: Analyzing trace with hash -2085876682, now seen corresponding path program 1 times [2021-11-19 15:47:39,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:47:39,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [870316544] [2021-11-19 15:47:39,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:39,376 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:47:39,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:47:39,377 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:47:39,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-19 15:47:42,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:42,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 2422 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-19 15:47:42,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:47:43,831 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 95 proven. 15 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-11-19 15:47:43,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:47:45,250 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-11-19 15:47:45,250 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:47:45,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [870316544] [2021-11-19 15:47:45,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [870316544] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:47:45,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1214313889] [2021-11-19 15:47:45,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:45,251 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:47:45,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:47:45,252 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:47:45,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2021-11-19 15:47:46,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:46,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 2422 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:47:46,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:47:48,772 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-19 15:47:48,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:47:50,196 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-19 15:47:50,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1214313889] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:47:50,196 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:47:50,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [11, 11] total 15 [2021-11-19 15:47:50,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564563187] [2021-11-19 15:47:50,197 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:47:50,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:47:50,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:47:50,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:47:50,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-19 15:47:50,199 INFO L87 Difference]: Start difference. First operand 6639 states and 9547 transitions. Second operand has 5 states, 5 states have (on average 53.8) internal successors, (269), 5 states have internal predecessors, (269), 3 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (58), 4 states have call predecessors, (58), 3 states have call successors, (58) [2021-11-19 15:47:56,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:56,159 INFO L93 Difference]: Finished difference Result 13259 states and 19163 transitions. [2021-11-19 15:47:56,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:47:56,159 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 53.8) internal successors, (269), 5 states have internal predecessors, (269), 3 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (58), 4 states have call predecessors, (58), 3 states have call successors, (58) Word has length 264 [2021-11-19 15:47:56,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:56,229 INFO L225 Difference]: With dead ends: 13259 [2021-11-19 15:47:56,229 INFO L226 Difference]: Without dead ends: 6639 [2021-11-19 15:47:56,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1052 GetRequests, 1039 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-19 15:47:56,279 INFO L933 BasicCegarLoop]: 2660 mSDtfsCounter, 2512 mSDsluCounter, 1527 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2512 SdHoareTripleChecker+Valid, 4187 SdHoareTripleChecker+Invalid, 1171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:56,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2512 Valid, 4187 Invalid, 1171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-11-19 15:47:56,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6639 states. [2021-11-19 15:47:56,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6639 to 6639. [2021-11-19 15:47:56,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6639 states, 4316 states have (on average 1.22451343836886) internal successors, (5285), 4512 states have internal predecessors, (5285), 1927 states have call successors, (1927), 397 states have call predecessors, (1927), 395 states have return successors, (2333), 1837 states have call predecessors, (2333), 1927 states have call successors, (2333) [2021-11-19 15:47:57,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6639 states to 6639 states and 9545 transitions. [2021-11-19 15:47:57,006 INFO L78 Accepts]: Start accepts. Automaton has 6639 states and 9545 transitions. Word has length 264 [2021-11-19 15:47:57,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:57,007 INFO L470 AbstractCegarLoop]: Abstraction has 6639 states and 9545 transitions. [2021-11-19 15:47:57,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.8) internal successors, (269), 5 states have internal predecessors, (269), 3 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (58), 4 states have call predecessors, (58), 3 states have call successors, (58) [2021-11-19 15:47:57,007 INFO L276 IsEmpty]: Start isEmpty. Operand 6639 states and 9545 transitions. [2021-11-19 15:47:57,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-11-19 15:47:57,017 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:57,017 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:47:57,070 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2021-11-19 15:47:57,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2021-11-19 15:47:57,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:47:57,431 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:47:57,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:57,432 INFO L85 PathProgramCache]: Analyzing trace with hash -634783621, now seen corresponding path program 1 times [2021-11-19 15:47:57,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:47:57,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [28506000] [2021-11-19 15:47:57,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:57,435 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:47:57,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:47:57,437 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:47:57,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-19 15:47:59,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:59,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 2423 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-19 15:47:59,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:48:01,470 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 95 proven. 15 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-11-19 15:48:01,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:48:02,809 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-11-19 15:48:02,809 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:48:02,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [28506000] [2021-11-19 15:48:02,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [28506000] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:48:02,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1006271277] [2021-11-19 15:48:02,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:48:02,809 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:48:02,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:48:02,810 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:48:02,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2021-11-19 15:48:04,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:48:04,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 2423 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:48:04,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:48:05,959 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-19 15:48:05,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:48:07,223 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-19 15:48:07,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1006271277] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:48:07,224 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:48:07,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [11, 11] total 15 [2021-11-19 15:48:07,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293428223] [2021-11-19 15:48:07,225 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:48:07,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:48:07,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:48:07,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:48:07,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-19 15:48:07,227 INFO L87 Difference]: Start difference. First operand 6639 states and 9545 transitions. Second operand has 5 states, 5 states have (on average 54.2) internal successors, (271), 5 states have internal predecessors, (271), 3 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (58), 4 states have call predecessors, (58), 3 states have call successors, (58) [2021-11-19 15:48:12,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:48:12,981 INFO L93 Difference]: Finished difference Result 13259 states and 19159 transitions. [2021-11-19 15:48:12,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:48:12,982 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 54.2) internal successors, (271), 5 states have internal predecessors, (271), 3 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (58), 4 states have call predecessors, (58), 3 states have call successors, (58) Word has length 265 [2021-11-19 15:48:12,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:48:13,036 INFO L225 Difference]: With dead ends: 13259 [2021-11-19 15:48:13,036 INFO L226 Difference]: Without dead ends: 6639 [2021-11-19 15:48:13,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1056 GetRequests, 1043 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-19 15:48:13,083 INFO L933 BasicCegarLoop]: 2659 mSDtfsCounter, 3907 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 1105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3907 SdHoareTripleChecker+Valid, 4185 SdHoareTripleChecker+Invalid, 2240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1105 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:48:13,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3907 Valid, 4185 Invalid, 2240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1105 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-11-19 15:48:13,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6639 states. [2021-11-19 15:48:13,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6639 to 6639. [2021-11-19 15:48:13,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6639 states, 4316 states have (on average 1.224050046339203) internal successors, (5283), 4512 states have internal predecessors, (5283), 1927 states have call successors, (1927), 397 states have call predecessors, (1927), 395 states have return successors, (2333), 1837 states have call predecessors, (2333), 1927 states have call successors, (2333) [2021-11-19 15:48:13,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6639 states to 6639 states and 9543 transitions. [2021-11-19 15:48:13,837 INFO L78 Accepts]: Start accepts. Automaton has 6639 states and 9543 transitions. Word has length 265 [2021-11-19 15:48:13,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:48:13,838 INFO L470 AbstractCegarLoop]: Abstraction has 6639 states and 9543 transitions. [2021-11-19 15:48:13,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.2) internal successors, (271), 5 states have internal predecessors, (271), 3 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (58), 4 states have call predecessors, (58), 3 states have call successors, (58) [2021-11-19 15:48:13,838 INFO L276 IsEmpty]: Start isEmpty. Operand 6639 states and 9543 transitions. [2021-11-19 15:48:13,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2021-11-19 15:48:13,842 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:48:13,842 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:48:13,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (31)] Ended with exit code 0 [2021-11-19 15:48:14,089 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2021-11-19 15:48:14,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:48:14,243 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:48:14,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:48:14,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1513944914, now seen corresponding path program 1 times [2021-11-19 15:48:14,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:48:14,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1036713387] [2021-11-19 15:48:14,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:48:14,247 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:48:14,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:48:14,248 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:48:14,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-19 15:48:16,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:48:16,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 2424 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-19 15:48:16,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:48:18,164 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 95 proven. 15 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-11-19 15:48:18,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:48:19,602 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-11-19 15:48:19,602 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:48:19,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1036713387] [2021-11-19 15:48:19,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1036713387] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:48:19,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [802000930] [2021-11-19 15:48:19,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:48:19,602 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:48:19,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:48:19,603 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:48:19,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2021-11-19 15:48:20,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:48:20,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 2424 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:48:20,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:48:22,761 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-19 15:48:22,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:48:23,963 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-19 15:48:23,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [802000930] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:48:23,964 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:48:23,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [11, 11] total 15 [2021-11-19 15:48:23,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368506394] [2021-11-19 15:48:23,965 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:48:23,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:48:23,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:48:23,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:48:23,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-19 15:48:23,966 INFO L87 Difference]: Start difference. First operand 6639 states and 9543 transitions. Second operand has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 3 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (58), 4 states have call predecessors, (58), 3 states have call successors, (58) [2021-11-19 15:48:29,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:48:29,216 INFO L93 Difference]: Finished difference Result 13259 states and 19155 transitions. [2021-11-19 15:48:29,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:48:29,216 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 3 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (58), 4 states have call predecessors, (58), 3 states have call successors, (58) Word has length 266 [2021-11-19 15:48:29,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:48:29,265 INFO L225 Difference]: With dead ends: 13259 [2021-11-19 15:48:29,265 INFO L226 Difference]: Without dead ends: 6639 [2021-11-19 15:48:29,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1060 GetRequests, 1047 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-19 15:48:29,306 INFO L933 BasicCegarLoop]: 2658 mSDtfsCounter, 2510 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2510 SdHoareTripleChecker+Valid, 4183 SdHoareTripleChecker+Invalid, 1171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-19 15:48:29,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2510 Valid, 4183 Invalid, 1171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-11-19 15:48:29,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6639 states. [2021-11-19 15:48:30,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6639 to 6639. [2021-11-19 15:48:30,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6639 states, 4316 states have (on average 1.223586654309546) internal successors, (5281), 4512 states have internal predecessors, (5281), 1927 states have call successors, (1927), 397 states have call predecessors, (1927), 395 states have return successors, (2333), 1837 states have call predecessors, (2333), 1927 states have call successors, (2333) [2021-11-19 15:48:30,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6639 states to 6639 states and 9541 transitions. [2021-11-19 15:48:30,048 INFO L78 Accepts]: Start accepts. Automaton has 6639 states and 9541 transitions. Word has length 266 [2021-11-19 15:48:30,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:48:30,049 INFO L470 AbstractCegarLoop]: Abstraction has 6639 states and 9541 transitions. [2021-11-19 15:48:30,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 3 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (58), 4 states have call predecessors, (58), 3 states have call successors, (58) [2021-11-19 15:48:30,050 INFO L276 IsEmpty]: Start isEmpty. Operand 6639 states and 9541 transitions. [2021-11-19 15:48:30,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-11-19 15:48:30,055 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:48:30,055 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:48:30,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2021-11-19 15:48:30,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (33)] Forceful destruction successful, exit code 0 [2021-11-19 15:48:30,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:48:30,465 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:48:30,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:48:30,466 INFO L85 PathProgramCache]: Analyzing trace with hash -480430633, now seen corresponding path program 1 times [2021-11-19 15:48:30,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:48:30,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [634574510] [2021-11-19 15:48:30,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:48:30,468 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:48:30,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:48:30,468 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:48:30,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-11-19 15:48:32,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:48:32,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 2425 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-19 15:48:32,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:48:34,193 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 95 proven. 15 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-11-19 15:48:34,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:48:35,473 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-11-19 15:48:35,473 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:48:35,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [634574510] [2021-11-19 15:48:35,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [634574510] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:48:35,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1465928536] [2021-11-19 15:48:35,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:48:35,474 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:48:35,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:48:35,475 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:48:35,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2021-11-19 15:48:36,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:48:36,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 2425 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:48:36,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:48:38,669 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-19 15:48:38,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:48:39,951 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-19 15:48:39,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1465928536] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:48:39,952 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:48:39,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [11, 11] total 15 [2021-11-19 15:48:39,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385650471] [2021-11-19 15:48:39,953 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:48:39,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:48:39,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:48:39,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:48:39,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-19 15:48:39,955 INFO L87 Difference]: Start difference. First operand 6639 states and 9541 transitions. Second operand has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 3 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (58), 4 states have call predecessors, (58), 3 states have call successors, (58) [2021-11-19 15:48:45,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:48:45,594 INFO L93 Difference]: Finished difference Result 13259 states and 19151 transitions. [2021-11-19 15:48:45,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:48:45,594 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 3 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (58), 4 states have call predecessors, (58), 3 states have call successors, (58) Word has length 267 [2021-11-19 15:48:45,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:48:45,646 INFO L225 Difference]: With dead ends: 13259 [2021-11-19 15:48:45,646 INFO L226 Difference]: Without dead ends: 6639 [2021-11-19 15:48:45,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1064 GetRequests, 1051 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-19 15:48:45,791 INFO L933 BasicCegarLoop]: 2657 mSDtfsCounter, 3901 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 1105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3901 SdHoareTripleChecker+Valid, 4181 SdHoareTripleChecker+Invalid, 2240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1105 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:48:45,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3901 Valid, 4181 Invalid, 2240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1105 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-11-19 15:48:45,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6639 states. [2021-11-19 15:48:46,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6639 to 6639. [2021-11-19 15:48:46,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6639 states, 4316 states have (on average 1.2231232622798889) internal successors, (5279), 4512 states have internal predecessors, (5279), 1927 states have call successors, (1927), 397 states have call predecessors, (1927), 395 states have return successors, (2333), 1837 states have call predecessors, (2333), 1927 states have call successors, (2333) [2021-11-19 15:48:46,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6639 states to 6639 states and 9539 transitions. [2021-11-19 15:48:46,392 INFO L78 Accepts]: Start accepts. Automaton has 6639 states and 9539 transitions. Word has length 267 [2021-11-19 15:48:46,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:48:46,393 INFO L470 AbstractCegarLoop]: Abstraction has 6639 states and 9539 transitions. [2021-11-19 15:48:46,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 3 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (58), 4 states have call predecessors, (58), 3 states have call successors, (58) [2021-11-19 15:48:46,393 INFO L276 IsEmpty]: Start isEmpty. Operand 6639 states and 9539 transitions. [2021-11-19 15:48:46,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-11-19 15:48:46,397 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:48:46,397 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:48:46,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-11-19 15:48:46,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (35)] Forceful destruction successful, exit code 0 [2021-11-19 15:48:46,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:48:46,798 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:48:46,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:48:46,799 INFO L85 PathProgramCache]: Analyzing trace with hash -451801482, now seen corresponding path program 1 times [2021-11-19 15:48:46,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:48:46,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [363987163] [2021-11-19 15:48:46,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:48:46,801 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:48:46,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:48:46,801 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:48:46,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-11-19 15:48:49,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:48:49,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 2425 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-19 15:48:49,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:48:50,540 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 95 proven. 15 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-11-19 15:48:50,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:48:51,770 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-11-19 15:48:51,770 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:48:51,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [363987163] [2021-11-19 15:48:51,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [363987163] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:48:51,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [110968260] [2021-11-19 15:48:51,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:48:51,771 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:48:51,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:48:51,772 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:48:51,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2021-11-19 15:48:53,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:48:53,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 2425 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 15:48:53,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:48:53,742 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-19 15:48:53,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:48:54,153 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-19 15:48:54,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [110968260] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:48:54,153 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:48:54,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [11, 11] total 15 [2021-11-19 15:48:54,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845106127] [2021-11-19 15:48:54,154 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:48:54,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:48:54,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:48:54,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:48:54,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2021-11-19 15:48:54,156 INFO L87 Difference]: Start difference. First operand 6639 states and 9539 transitions. Second operand has 5 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 3 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-19 15:48:54,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:48:54,800 INFO L93 Difference]: Finished difference Result 13195 states and 19136 transitions. [2021-11-19 15:48:54,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:48:54,800 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 3 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 267 [2021-11-19 15:48:54,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:48:54,807 INFO L225 Difference]: With dead ends: 13195 [2021-11-19 15:48:54,807 INFO L226 Difference]: Without dead ends: 0 [2021-11-19 15:48:54,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1065 GetRequests, 1051 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-11-19 15:48:54,851 INFO L933 BasicCegarLoop]: 2633 mSDtfsCounter, 9 mSDsluCounter, 7890 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 10523 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:48:54,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 10523 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:48:54,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-19 15:48:54,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-19 15:48:54,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:48:54,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-19 15:48:54,857 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 267 [2021-11-19 15:48:54,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:48:54,857 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-19 15:48:54,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 3 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-19 15:48:54,858 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-19 15:48:54,858 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-19 15:48:54,860 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-19 15:48:54,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-11-19 15:48:55,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (37)] Forceful destruction successful, exit code 0 [2021-11-19 15:48:55,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929af35b-d893-4dbc-8360-a7e83b6b9806/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:48:55,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.