./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.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_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/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_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/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_e742ac2b-93ae-462e-aab1-7341cb881a9f/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 c727ee56ff8cf558c3dc08b64ebc267261ea17bdfb88e50734daf71ad89adc7d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:33:58,191 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:33:58,194 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:33:58,230 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:33:58,231 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:33:58,237 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:33:58,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:33:58,250 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:33:58,254 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:33:58,263 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:33:58,264 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:33:58,266 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:33:58,267 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:33:58,268 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:33:58,270 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:33:58,272 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:33:58,273 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:33:58,274 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:33:58,280 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:33:58,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:33:58,296 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:33:58,298 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:33:58,304 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:33:58,305 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:33:58,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:33:58,313 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:33:58,313 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:33:58,315 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:33:58,316 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:33:58,318 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:33:58,319 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:33:58,320 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:33:58,322 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:33:58,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:33:58,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:33:58,326 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:33:58,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:33:58,327 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:33:58,327 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:33:58,328 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:33:58,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:33:58,330 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 13:33:58,388 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:33:58,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:33:58,390 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:33:58,390 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:33:58,390 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:33:58,391 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:33:58,391 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:33:58,391 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:33:58,398 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:33:58,398 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:33:58,399 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:33:58,399 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:33:58,399 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:33:58,399 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:33:58,400 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:33:58,400 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:33:58,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:33:58,401 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:33:58,401 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:33:58,401 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:33:58,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:33:58,402 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:33:58,402 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:33:58,402 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:33:58,402 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:33:58,403 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:33:58,403 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:33:58,403 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:33:58,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:33:58,403 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:33:58,404 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:33:58,404 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:33:58,404 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:33:58,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:33:58,405 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:33:58,405 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:33:58,405 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:33:58,405 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_e742ac2b-93ae-462e-aab1-7341cb881a9f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c727ee56ff8cf558c3dc08b64ebc267261ea17bdfb88e50734daf71ad89adc7d [2021-11-19 13:33:58,785 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:33:58,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:33:58,819 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:33:58,820 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:33:58,821 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:33:58,822 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i [2021-11-19 13:33:58,909 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/data/2d17c0ae9/9371ef1d54e14c9199af57dbbfb502ea/FLAGcf89c0e64 [2021-11-19 13:33:59,962 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:33:59,963 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i [2021-11-19 13:34:00,058 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/data/2d17c0ae9/9371ef1d54e14c9199af57dbbfb502ea/FLAGcf89c0e64 [2021-11-19 13:34:00,321 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/data/2d17c0ae9/9371ef1d54e14c9199af57dbbfb502ea [2021-11-19 13:34:00,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:34:00,325 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:34:00,327 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:34:00,327 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:34:00,330 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:34:00,331 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:34:00" (1/1) ... [2021-11-19 13:34:00,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ecb0e79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:34:00, skipping insertion in model container [2021-11-19 13:34:00,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:34:00" (1/1) ... [2021-11-19 13:34:00,341 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:34:00,471 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:34:03,721 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_e742ac2b-93ae-462e-aab1-7341cb881a9f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i[328445,328458] [2021-11-19 13:34:03,724 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_e742ac2b-93ae-462e-aab1-7341cb881a9f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i[328590,328603] [2021-11-19 13:34:03,740 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:34:03,812 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 13:34:03,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5b4ec2ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:34:03, skipping insertion in model container [2021-11-19 13:34:03,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:34:03,814 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 13:34:03,816 INFO L158 Benchmark]: Toolchain (without parser) took 3489.66ms. Allocated memory was 113.2MB in the beginning and 148.9MB in the end (delta: 35.7MB). Free memory was 84.9MB in the beginning and 101.2MB in the end (delta: -16.3MB). Peak memory consumption was 73.7MB. Max. memory is 16.1GB. [2021-11-19 13:34:03,817 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 113.2MB. Free memory is still 91.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:34:03,819 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3487.08ms. Allocated memory was 113.2MB in the beginning and 148.9MB in the end (delta: 35.7MB). Free memory was 84.4MB in the beginning and 101.2MB in the end (delta: -16.7MB). Peak memory consumption was 73.7MB. Max. memory is 16.1GB. [2021-11-19 13:34:03,821 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 113.2MB. Free memory is still 91.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3487.08ms. Allocated memory was 113.2MB in the beginning and 148.9MB in the end (delta: 35.7MB). Free memory was 84.4MB in the beginning and 101.2MB in the end (delta: -16.7MB). Peak memory consumption was 73.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 7501]: 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_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/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_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/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_e742ac2b-93ae-462e-aab1-7341cb881a9f/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 c727ee56ff8cf558c3dc08b64ebc267261ea17bdfb88e50734daf71ad89adc7d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:34:06,466 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:34:06,469 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:34:06,515 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:34:06,516 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:34:06,520 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:34:06,523 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:34:06,527 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:34:06,531 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:34:06,539 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:34:06,541 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:34:06,543 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:34:06,544 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:34:06,547 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:34:06,549 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:34:06,556 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:34:06,557 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:34:06,558 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:34:06,560 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:34:06,563 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:34:06,566 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:34:06,570 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:34:06,573 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:34:06,576 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:34:06,585 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:34:06,591 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:34:06,592 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:34:06,593 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:34:06,595 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:34:06,597 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:34:06,598 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:34:06,599 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:34:06,602 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:34:06,603 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:34:06,605 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:34:06,605 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:34:06,606 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:34:06,607 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:34:06,634 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:34:06,637 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:34:06,638 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:34:06,639 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 13:34:06,692 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:34:06,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:34:06,694 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:34:06,694 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:34:06,694 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:34:06,695 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:34:06,695 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:34:06,695 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:34:06,695 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:34:06,696 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:34:06,697 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:34:06,700 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:34:06,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:34:06,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:34:06,701 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:34:06,702 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:34:06,702 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 13:34:06,702 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 13:34:06,702 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:34:06,703 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:34:06,703 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:34:06,703 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:34:06,703 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 13:34:06,704 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:34:06,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:34:06,704 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:34:06,705 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:34:06,705 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:34:06,705 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 13:34:06,705 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 13:34:06,705 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:34:06,706 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:34:06,706 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:34:06,706 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_e742ac2b-93ae-462e-aab1-7341cb881a9f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c727ee56ff8cf558c3dc08b64ebc267261ea17bdfb88e50734daf71ad89adc7d [2021-11-19 13:34:07,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:34:07,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:34:07,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:34:07,229 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:34:07,230 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:34:07,232 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i [2021-11-19 13:34:07,318 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/data/c7c535efb/c8ffb450766a4b0bb95bf51f193c00c4/FLAG391676a5b [2021-11-19 13:34:08,500 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:34:08,502 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i [2021-11-19 13:34:08,569 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/data/c7c535efb/c8ffb450766a4b0bb95bf51f193c00c4/FLAG391676a5b [2021-11-19 13:34:08,717 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/data/c7c535efb/c8ffb450766a4b0bb95bf51f193c00c4 [2021-11-19 13:34:08,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:34:08,723 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:34:08,728 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:34:08,728 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:34:08,733 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:34:08,734 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:34:08" (1/1) ... [2021-11-19 13:34:08,736 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79eaac42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:34:08, skipping insertion in model container [2021-11-19 13:34:08,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:34:08" (1/1) ... [2021-11-19 13:34:08,745 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:34:08,996 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:34:12,455 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_e742ac2b-93ae-462e-aab1-7341cb881a9f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i[328445,328458] [2021-11-19 13:34:12,459 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_e742ac2b-93ae-462e-aab1-7341cb881a9f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i[328590,328603] [2021-11-19 13:34:12,476 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:34:12,516 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 13:34:12,603 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:34:13,063 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_e742ac2b-93ae-462e-aab1-7341cb881a9f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i[328445,328458] [2021-11-19 13:34:13,064 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_e742ac2b-93ae-462e-aab1-7341cb881a9f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i[328590,328603] [2021-11-19 13:34:13,070 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:34:13,109 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:34:13,612 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_e742ac2b-93ae-462e-aab1-7341cb881a9f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i[328445,328458] [2021-11-19 13:34:13,613 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_e742ac2b-93ae-462e-aab1-7341cb881a9f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i[328590,328603] [2021-11-19 13:34:13,617 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:34:13,814 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:34:13,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:34:13 WrapperNode [2021-11-19 13:34:13,815 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:34:13,816 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:34:13,817 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:34:13,817 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:34:13,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:34:13" (1/1) ... [2021-11-19 13:34:14,028 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:34:13" (1/1) ... [2021-11-19 13:34:14,235 INFO L137 Inliner]: procedures = 402, calls = 2109, calls flagged for inlining = 154, calls inlined = 135, statements flattened = 4102 [2021-11-19 13:34:14,236 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:34:14,238 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:34:14,238 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:34:14,238 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:34:14,247 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:34:13" (1/1) ... [2021-11-19 13:34:14,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:34:13" (1/1) ... [2021-11-19 13:34:14,283 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:34:13" (1/1) ... [2021-11-19 13:34:14,283 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:34:13" (1/1) ... [2021-11-19 13:34:14,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:34:13" (1/1) ... [2021-11-19 13:34:14,492 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:34:13" (1/1) ... [2021-11-19 13:34:14,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:34:13" (1/1) ... [2021-11-19 13:34:14,578 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:34:14,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:34:14,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:34:14,581 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:34:14,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:34:13" (1/1) ... [2021-11-19 13:34:14,591 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:34:14,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:34:14,628 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:34:14,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:34:14,718 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_97 [2021-11-19 13:34:14,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_97 [2021-11-19 13:34:14,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-19 13:34:14,718 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-19 13:34:14,719 INFO L130 BoogieDeclarations]: Found specification of procedure RxCurCount [2021-11-19 13:34:14,719 INFO L138 BoogieDeclarations]: Found implementation of procedure RxCurCount [2021-11-19 13:34:14,719 INFO L130 BoogieDeclarations]: Found specification of procedure irda_setup_dma [2021-11-19 13:34:14,719 INFO L138 BoogieDeclarations]: Found implementation of procedure irda_setup_dma [2021-11-19 13:34:14,719 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-19 13:34:14,720 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-19 13:34:14,720 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-19 13:34:14,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-19 13:34:14,720 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-19 13:34:14,720 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-19 13:34:14,721 INFO L130 BoogieDeclarations]: Found specification of procedure CheckRegBit [2021-11-19 13:34:14,721 INFO L138 BoogieDeclarations]: Found implementation of procedure CheckRegBit [2021-11-19 13:34:14,721 INFO L130 BoogieDeclarations]: Found specification of procedure via_remove_one [2021-11-19 13:34:14,721 INFO L138 BoogieDeclarations]: Found implementation of procedure via_remove_one [2021-11-19 13:34:14,721 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_change_speed [2021-11-19 13:34:14,722 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_change_speed [2021-11-19 13:34:14,722 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2021-11-19 13:34:14,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2021-11-19 13:34:14,722 INFO L130 BoogieDeclarations]: Found specification of procedure dma_zalloc_coherent [2021-11-19 13:34:14,722 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_zalloc_coherent [2021-11-19 13:34:14,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-19 13:34:14,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-19 13:34:14,723 INFO L130 BoogieDeclarations]: Found specification of procedure SetPulseWidth [2021-11-19 13:34:14,723 INFO L138 BoogieDeclarations]: Found implementation of procedure SetPulseWidth [2021-11-19 13:34:14,723 INFO L130 BoogieDeclarations]: Found specification of procedure Tdelay [2021-11-19 13:34:14,724 INFO L138 BoogieDeclarations]: Found implementation of procedure Tdelay [2021-11-19 13:34:14,724 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2021-11-19 13:34:14,724 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2021-11-19 13:34:14,724 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-19 13:34:14,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-19 13:34:14,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 13:34:14,725 INFO L130 BoogieDeclarations]: Found specification of procedure ClkTx [2021-11-19 13:34:14,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ClkTx [2021-11-19 13:34:14,725 INFO L130 BoogieDeclarations]: Found specification of procedure WriteLPCReg [2021-11-19 13:34:14,726 INFO L138 BoogieDeclarations]: Found implementation of procedure WriteLPCReg [2021-11-19 13:34:14,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 13:34:14,726 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2021-11-19 13:34:14,726 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2021-11-19 13:34:14,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 13:34:14,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 13:34:14,727 INFO L130 BoogieDeclarations]: Found specification of procedure CommonInit [2021-11-19 13:34:14,727 INFO L138 BoogieDeclarations]: Found implementation of procedure CommonInit [2021-11-19 13:34:14,727 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-19 13:34:14,727 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-19 13:34:14,727 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_change_dongle_speed [2021-11-19 13:34:14,728 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_change_dongle_speed [2021-11-19 13:34:14,728 INFO L130 BoogieDeclarations]: Found specification of procedure ReadLPCReg [2021-11-19 13:34:14,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ReadLPCReg [2021-11-19 13:34:14,728 INFO L130 BoogieDeclarations]: Found specification of procedure free_dma [2021-11-19 13:34:14,729 INFO L138 BoogieDeclarations]: Found implementation of procedure free_dma [2021-11-19 13:34:14,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_via_ircc_cb [2021-11-19 13:34:14,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_via_ircc_cb [2021-11-19 13:34:14,729 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_dma_receive [2021-11-19 13:34:14,729 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_dma_receive [2021-11-19 13:34:14,730 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-19 13:34:14,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-19 13:34:14,730 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_net_close [2021-11-19 13:34:14,730 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_net_close [2021-11-19 13:34:14,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-19 13:34:14,731 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-19 13:34:14,731 INFO L130 BoogieDeclarations]: Found specification of procedure CkRxRecv [2021-11-19 13:34:14,731 INFO L138 BoogieDeclarations]: Found implementation of procedure CkRxRecv [2021-11-19 13:34:14,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-19 13:34:14,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-19 13:34:14,732 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-19 13:34:14,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-19 13:34:14,732 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-19 13:34:14,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-19 13:34:14,732 INFO L130 BoogieDeclarations]: Found specification of procedure irda_get_next_speed [2021-11-19 13:34:14,733 INFO L138 BoogieDeclarations]: Found implementation of procedure irda_get_next_speed [2021-11-19 13:34:14,733 INFO L130 BoogieDeclarations]: Found specification of procedure ReadReg [2021-11-19 13:34:14,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ReadReg [2021-11-19 13:34:14,733 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_open [2021-11-19 13:34:14,733 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_open [2021-11-19 13:34:14,734 INFO L130 BoogieDeclarations]: Found specification of procedure WriteRegBit [2021-11-19 13:34:14,734 INFO L138 BoogieDeclarations]: Found implementation of procedure WriteRegBit [2021-11-19 13:34:14,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 13:34:14,734 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-19 13:34:14,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-19 13:34:14,735 INFO L130 BoogieDeclarations]: Found specification of procedure Wr_Indx [2021-11-19 13:34:14,735 INFO L138 BoogieDeclarations]: Found implementation of procedure Wr_Indx [2021-11-19 13:34:14,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:34:14,735 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-19 13:34:14,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-19 13:34:14,736 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-19 13:34:14,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-19 13:34:14,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 13:34:14,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-19 13:34:14,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-19 13:34:14,737 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 13:34:14,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 13:34:14,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-19 13:34:14,737 INFO L130 BoogieDeclarations]: Found specification of procedure WriteReg [2021-11-19 13:34:14,737 INFO L138 BoogieDeclarations]: Found implementation of procedure WriteReg [2021-11-19 13:34:14,738 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-19 13:34:14,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-19 13:34:14,738 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-19 13:34:14,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-19 13:34:14,738 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-19 13:34:14,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-19 13:34:14,739 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-19 13:34:14,739 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-19 13:34:14,739 INFO L130 BoogieDeclarations]: Found specification of procedure SetBaudRate [2021-11-19 13:34:14,739 INFO L138 BoogieDeclarations]: Found implementation of procedure SetBaudRate [2021-11-19 13:34:14,740 INFO L130 BoogieDeclarations]: Found specification of procedure Wr_Byte [2021-11-19 13:34:14,740 INFO L138 BoogieDeclarations]: Found implementation of procedure Wr_Byte [2021-11-19 13:34:14,740 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-19 13:34:14,740 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-19 13:34:14,740 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-19 13:34:14,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-19 13:34:14,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-19 13:34:14,741 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_net_open [2021-11-19 13:34:14,741 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_net_open [2021-11-19 13:34:14,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:34:14,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:34:14,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 13:34:14,742 INFO L130 BoogieDeclarations]: Found specification of procedure ResetChip [2021-11-19 13:34:14,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ResetChip [2021-11-19 13:34:14,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 13:34:14,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 13:34:14,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-19 13:34:14,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-19 13:34:14,743 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-19 13:34:14,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-19 13:34:14,744 INFO L130 BoogieDeclarations]: Found specification of procedure irda_device_txqueue_empty [2021-11-19 13:34:14,744 INFO L138 BoogieDeclarations]: Found implementation of procedure irda_device_txqueue_empty [2021-11-19 13:34:14,744 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_byte [2021-11-19 13:34:14,745 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_byte [2021-11-19 13:34:14,745 INFO L130 BoogieDeclarations]: Found specification of procedure Sdelay [2021-11-19 13:34:14,745 INFO L138 BoogieDeclarations]: Found implementation of procedure Sdelay [2021-11-19 13:34:14,745 INFO L130 BoogieDeclarations]: Found specification of procedure SetSIR [2021-11-19 13:34:14,745 INFO L138 BoogieDeclarations]: Found implementation of procedure SetSIR [2021-11-19 13:34:14,745 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-19 13:34:14,746 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-19 13:34:14,746 INFO L130 BoogieDeclarations]: Found specification of procedure SetMaxRxPacketSize [2021-11-19 13:34:14,746 INFO L138 BoogieDeclarations]: Found implementation of procedure SetMaxRxPacketSize [2021-11-19 13:34:14,746 INFO L130 BoogieDeclarations]: Found specification of procedure GetRecvByte [2021-11-19 13:34:14,746 INFO L138 BoogieDeclarations]: Found implementation of procedure GetRecvByte [2021-11-19 13:34:14,747 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-19 13:34:14,747 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-19 13:34:14,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 13:34:14,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 13:34:14,747 INFO L130 BoogieDeclarations]: Found specification of procedure hwreset [2021-11-19 13:34:14,748 INFO L138 BoogieDeclarations]: Found implementation of procedure hwreset [2021-11-19 13:34:14,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 13:34:14,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 13:34:14,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-19 13:34:14,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 13:34:14,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 13:34:14,749 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2021-11-19 13:34:14,749 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2021-11-19 13:34:14,749 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-19 13:34:14,749 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-19 13:34:14,750 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-11-19 13:34:14,750 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-11-19 13:34:14,750 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-19 13:34:14,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-19 13:34:14,750 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-19 13:34:14,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-19 13:34:14,751 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-19 13:34:14,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-19 13:34:14,751 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_dma_xmit [2021-11-19 13:34:14,751 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_dma_xmit [2021-11-19 13:34:14,752 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-19 13:34:14,752 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-19 13:34:14,752 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-19 13:34:14,752 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-19 13:34:14,752 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-19 13:34:14,753 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-19 13:34:14,753 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-19 13:34:14,753 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-19 13:34:14,753 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2021-11-19 13:34:14,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2021-11-19 13:34:14,754 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2021-11-19 13:34:14,754 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2021-11-19 13:34:14,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-19 13:34:14,754 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2021-11-19 13:34:14,754 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2021-11-19 13:34:14,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-19 13:34:14,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-19 13:34:14,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-19 13:34:14,755 INFO L130 BoogieDeclarations]: Found specification of procedure SetSendByte [2021-11-19 13:34:14,755 INFO L138 BoogieDeclarations]: Found implementation of procedure SetSendByte [2021-11-19 13:34:14,756 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2021-11-19 13:34:14,756 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2021-11-19 13:34:14,756 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-19 13:34:14,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-19 13:34:14,756 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_via_ircc_cb [2021-11-19 13:34:14,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_via_ircc_cb [2021-11-19 13:34:14,757 INFO L130 BoogieDeclarations]: Found specification of procedure SetSendPreambleCount [2021-11-19 13:34:14,757 INFO L138 BoogieDeclarations]: Found implementation of procedure SetSendPreambleCount [2021-11-19 13:34:14,757 INFO L130 BoogieDeclarations]: Found specification of procedure InitCard [2021-11-19 13:34:14,757 INFO L138 BoogieDeclarations]: Found implementation of procedure InitCard [2021-11-19 13:34:14,758 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-19 13:34:14,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-19 13:34:14,758 INFO L130 BoogieDeclarations]: Found specification of procedure SetTimer [2021-11-19 13:34:14,758 INFO L138 BoogieDeclarations]: Found implementation of procedure SetTimer [2021-11-19 13:34:14,758 INFO L130 BoogieDeclarations]: Found specification of procedure ActClk [2021-11-19 13:34:14,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ActClk [2021-11-19 13:34:14,759 INFO L130 BoogieDeclarations]: Found specification of procedure request_dma [2021-11-19 13:34:14,759 INFO L138 BoogieDeclarations]: Found implementation of procedure request_dma [2021-11-19 13:34:14,759 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-11-19 13:34:14,759 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-11-19 13:34:14,760 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2021-11-19 13:34:14,760 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2021-11-19 13:34:14,760 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-19 13:34:14,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-19 13:34:14,760 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_to_linear_data [2021-11-19 13:34:14,761 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_to_linear_data [2021-11-19 13:34:15,649 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:34:15,653 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:34:16,132 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-19 13:34:51,671 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-19 13:34:53,909 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:34:53,932 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:34:53,932 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 13:34:53,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:34:53 BoogieIcfgContainer [2021-11-19 13:34:53,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:34:53,940 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:34:53,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:34:53,944 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:34:53,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:34:08" (1/3) ... [2021-11-19 13:34:53,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@301d59df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:34:53, skipping insertion in model container [2021-11-19 13:34:53,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:34:13" (2/3) ... [2021-11-19 13:34:53,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@301d59df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:34:53, skipping insertion in model container [2021-11-19 13:34:53,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:34:53" (3/3) ... [2021-11-19 13:34:53,947 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i [2021-11-19 13:34:53,953 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:34:53,953 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 13:34:54,023 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:34:54,030 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 13:34:54,031 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 13:34:54,098 INFO L276 IsEmpty]: Start isEmpty. Operand has 1916 states, 1164 states have (on average 1.2706185567010309) internal successors, (1479), 1188 states have internal predecessors, (1479), 660 states have call successors, (660), 92 states have call predecessors, (660), 91 states have return successors, (656), 644 states have call predecessors, (656), 656 states have call successors, (656) [2021-11-19 13:34:54,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-19 13:34:54,137 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:54,138 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:34:54,139 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:34:54,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:54,145 INFO L85 PathProgramCache]: Analyzing trace with hash 468133967, now seen corresponding path program 1 times [2021-11-19 13:34:54,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:34:54,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1129578627] [2021-11-19 13:34:54,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:54,165 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:34:54,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:34:54,168 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:34:54,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 13:34:55,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:55,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 1562 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:34:55,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:56,526 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-11-19 13:34:56,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:57,233 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-11-19 13:34:57,234 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:34:57,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1129578627] [2021-11-19 13:34:57,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1129578627] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:57,242 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:57,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 13:34:57,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183231563] [2021-11-19 13:34:57,245 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:57,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:34:57,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:34:57,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:34:57,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:34:57,311 INFO L87 Difference]: Start difference. First operand has 1916 states, 1164 states have (on average 1.2706185567010309) internal successors, (1479), 1188 states have internal predecessors, (1479), 660 states have call successors, (660), 92 states have call predecessors, (660), 91 states have return successors, (656), 644 states have call predecessors, (656), 656 states have call successors, (656) Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 4 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2021-11-19 13:34:59,550 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:35:07,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:07,730 INFO L93 Difference]: Finished difference Result 6789 states and 9976 transitions. [2021-11-19 13:35:07,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:35:07,733 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 4 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) Word has length 162 [2021-11-19 13:35:07,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:07,825 INFO L225 Difference]: With dead ends: 6789 [2021-11-19 13:35:07,825 INFO L226 Difference]: Without dead ends: 4774 [2021-11-19 13:35:07,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 320 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 13:35:07,857 INFO L933 BasicCegarLoop]: 3951 mSDtfsCounter, 5474 mSDsluCounter, 3848 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 1094 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5474 SdHoareTripleChecker+Valid, 7799 SdHoareTripleChecker+Invalid, 2186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1094 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:07,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5474 Valid, 7799 Invalid, 2186 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1094 Valid, 1091 Invalid, 1 Unknown, 0 Unchecked, 9.7s Time] [2021-11-19 13:35:07,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4774 states. [2021-11-19 13:35:08,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4774 to 4766. [2021-11-19 13:35:08,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4766 states, 2875 states have (on average 1.2591304347826087) internal successors, (3620), 2944 states have internal predecessors, (3620), 1650 states have call successors, (1650), 242 states have call predecessors, (1650), 240 states have return successors, (1684), 1608 states have call predecessors, (1684), 1650 states have call successors, (1684) [2021-11-19 13:35:08,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4766 states to 4766 states and 6954 transitions. [2021-11-19 13:35:08,504 INFO L78 Accepts]: Start accepts. Automaton has 4766 states and 6954 transitions. Word has length 162 [2021-11-19 13:35:08,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:08,506 INFO L470 AbstractCegarLoop]: Abstraction has 4766 states and 6954 transitions. [2021-11-19 13:35:08,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 4 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2021-11-19 13:35:08,507 INFO L276 IsEmpty]: Start isEmpty. Operand 4766 states and 6954 transitions. [2021-11-19 13:35:08,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-19 13:35:08,544 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:08,545 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:08,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 13:35:08,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:35:08,769 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:35:08,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:08,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1004376211, now seen corresponding path program 1 times [2021-11-19 13:35:08,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:35:08,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [490007322] [2021-11-19 13:35:08,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:08,773 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:35:08,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:35:08,776 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:35:08,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 13:35:10,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:10,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 1841 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:35:10,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:35:11,170 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-11-19 13:35:11,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:35:12,076 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-11-19 13:35:12,076 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:35:12,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [490007322] [2021-11-19 13:35:12,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [490007322] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:12,076 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:12,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 13:35:12,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963793129] [2021-11-19 13:35:12,077 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:12,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:35:12,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:35:12,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:35:12,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:35:12,080 INFO L87 Difference]: Start difference. First operand 4766 states and 6954 transitions. Second operand has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 4 states have call successors, (48), 3 states have call predecessors, (48), 3 states have return successors, (46), 4 states have call predecessors, (46), 4 states have call successors, (46) [2021-11-19 13:35:14,220 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:35:21,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:21,943 INFO L93 Difference]: Finished difference Result 15897 states and 23280 transitions. [2021-11-19 13:35:21,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:35:21,944 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 4 states have call successors, (48), 3 states have call predecessors, (48), 3 states have return successors, (46), 4 states have call predecessors, (46), 4 states have call successors, (46) Word has length 235 [2021-11-19 13:35:21,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:22,087 INFO L225 Difference]: With dead ends: 15897 [2021-11-19 13:35:22,088 INFO L226 Difference]: Without dead ends: 11146 [2021-11-19 13:35:22,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 466 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 13:35:22,141 INFO L933 BasicCegarLoop]: 3738 mSDtfsCounter, 4543 mSDsluCounter, 4375 mSDsCounter, 0 mSdLazyCounter, 1351 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4543 SdHoareTripleChecker+Valid, 8113 SdHoareTripleChecker+Invalid, 1392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1351 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:22,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4543 Valid, 8113 Invalid, 1392 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [40 Valid, 1351 Invalid, 1 Unknown, 0 Unchecked, 8.9s Time] [2021-11-19 13:35:22,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11146 states. [2021-11-19 13:35:23,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11146 to 11136. [2021-11-19 13:35:23,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11136 states, 6593 states have (on average 1.2633095707568633) internal successors, (8329), 6753 states have internal predecessors, (8329), 3959 states have call successors, (3959), 587 states have call predecessors, (3959), 583 states have return successors, (3999), 3861 states have call predecessors, (3999), 3959 states have call successors, (3999) [2021-11-19 13:35:23,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11136 states to 11136 states and 16287 transitions. [2021-11-19 13:35:23,177 INFO L78 Accepts]: Start accepts. Automaton has 11136 states and 16287 transitions. Word has length 235 [2021-11-19 13:35:23,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:23,179 INFO L470 AbstractCegarLoop]: Abstraction has 11136 states and 16287 transitions. [2021-11-19 13:35:23,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 4 states have call successors, (48), 3 states have call predecessors, (48), 3 states have return successors, (46), 4 states have call predecessors, (46), 4 states have call successors, (46) [2021-11-19 13:35:23,180 INFO L276 IsEmpty]: Start isEmpty. Operand 11136 states and 16287 transitions. [2021-11-19 13:35:23,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2021-11-19 13:35:23,226 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:23,227 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 7, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:23,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 13:35:23,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:35:23,441 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:35:23,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:23,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1100687577, now seen corresponding path program 1 times [2021-11-19 13:35:23,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:35:23,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [231675688] [2021-11-19 13:35:23,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:23,444 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:35:23,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:35:23,447 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:35:23,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 13:35:24,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:24,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 1980 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:35:24,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:35:26,221 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 141 proven. 3 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-11-19 13:35:26,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:35:27,580 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2021-11-19 13:35:27,580 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:35:27,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [231675688] [2021-11-19 13:35:27,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [231675688] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:35:27,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [691796276] [2021-11-19 13:35:27,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:27,585 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:35:27,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:35:27,589 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:35:27,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-19 13:35:28,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:29,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 1980 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:35:29,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:35:30,439 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2021-11-19 13:35:30,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:35:31,931 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2021-11-19 13:35:31,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [691796276] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:31,932 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:35:31,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [8, 8] total 15 [2021-11-19 13:35:31,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886530927] [2021-11-19 13:35:31,933 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:31,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:35:31,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:35:31,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:35:31,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-11-19 13:35:31,935 INFO L87 Difference]: Start difference. First operand 11136 states and 16287 transitions. Second operand has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 4 states have call successors, (62), 3 states have call predecessors, (62), 4 states have return successors, (60), 4 states have call predecessors, (60), 4 states have call successors, (60) [2021-11-19 13:35:45,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:45,803 INFO L93 Difference]: Finished difference Result 34150 states and 50229 transitions. [2021-11-19 13:35:45,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:35:45,817 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 4 states have call successors, (62), 3 states have call predecessors, (62), 4 states have return successors, (60), 4 states have call predecessors, (60), 4 states have call successors, (60) Word has length 297 [2021-11-19 13:35:45,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:46,055 INFO L225 Difference]: With dead ends: 34150 [2021-11-19 13:35:46,055 INFO L226 Difference]: Without dead ends: 23029 [2021-11-19 13:35:46,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1184 GetRequests, 1171 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-11-19 13:35:46,151 INFO L933 BasicCegarLoop]: 5863 mSDtfsCounter, 5254 mSDsluCounter, 4508 mSDsCounter, 0 mSdLazyCounter, 2710 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5254 SdHoareTripleChecker+Valid, 10371 SdHoareTripleChecker+Invalid, 2759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 2710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:46,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5254 Valid, 10371 Invalid, 2759 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [49 Valid, 2710 Invalid, 0 Unknown, 0 Unchecked, 12.6s Time] [2021-11-19 13:35:46,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23029 states. [2021-11-19 13:35:48,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23029 to 23027. [2021-11-19 13:35:48,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23027 states, 13595 states have (on average 1.246487679293858) internal successors, (16946), 13923 states have internal predecessors, (16946), 8215 states have call successors, (8215), 1225 states have call predecessors, (8215), 1216 states have return successors, (8301), 8015 states have call predecessors, (8301), 8215 states have call successors, (8301) [2021-11-19 13:35:48,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23027 states to 23027 states and 33462 transitions. [2021-11-19 13:35:48,644 INFO L78 Accepts]: Start accepts. Automaton has 23027 states and 33462 transitions. Word has length 297 [2021-11-19 13:35:48,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:48,645 INFO L470 AbstractCegarLoop]: Abstraction has 23027 states and 33462 transitions. [2021-11-19 13:35:48,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 4 states have call successors, (62), 3 states have call predecessors, (62), 4 states have return successors, (60), 4 states have call predecessors, (60), 4 states have call successors, (60) [2021-11-19 13:35:48,646 INFO L276 IsEmpty]: Start isEmpty. Operand 23027 states and 33462 transitions. [2021-11-19 13:35:48,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2021-11-19 13:35:48,947 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:48,948 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 7, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:49,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 13:35:49,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-19 13:35:49,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:35:49,349 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:35:49,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:49,349 INFO L85 PathProgramCache]: Analyzing trace with hash -793646309, now seen corresponding path program 1 times [2021-11-19 13:35:49,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:35:49,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [980484566] [2021-11-19 13:35:49,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:49,352 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:35:49,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:35:49,354 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:35:49,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 13:35:50,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:50,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 1980 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:35:50,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:35:51,968 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 141 proven. 3 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-11-19 13:35:51,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:35:53,271 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2021-11-19 13:35:53,271 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:35:53,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [980484566] [2021-11-19 13:35:53,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [980484566] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:35:53,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [515677960] [2021-11-19 13:35:53,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:53,273 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:35:53,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:35:53,283 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:35:53,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-19 13:35:54,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:54,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 1980 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:35:54,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:35:56,647 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-11-19 13:35:56,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:35:58,090 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-11-19 13:35:58,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [515677960] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:58,090 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:35:58,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 16 [2021-11-19 13:35:58,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126841752] [2021-11-19 13:35:58,091 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:58,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:35:58,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:35:58,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:35:58,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:35:58,093 INFO L87 Difference]: Start difference. First operand 23027 states and 33462 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, (68), 3 states have call predecessors, (68), 4 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-19 13:36:00,238 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:36:06,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:36:06,652 INFO L93 Difference]: Finished difference Result 45210 states and 65787 transitions. [2021-11-19 13:36:06,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:36:06,665 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, (68), 3 states have call predecessors, (68), 4 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) Word has length 297 [2021-11-19 13:36:06,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:36:06,847 INFO L225 Difference]: With dead ends: 45210 [2021-11-19 13:36:06,848 INFO L226 Difference]: Without dead ends: 23027 [2021-11-19 13:36:06,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1184 GetRequests, 1170 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:36:06,932 INFO L933 BasicCegarLoop]: 2724 mSDtfsCounter, 2582 mSDsluCounter, 1451 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2582 SdHoareTripleChecker+Valid, 4175 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:36:06,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2582 Valid, 4175 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1274 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2021-11-19 13:36:07,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23027 states. [2021-11-19 13:36:09,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23027 to 23027. [2021-11-19 13:36:09,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23027 states, 13595 states have (on average 1.2457521147480692) internal successors, (16936), 13923 states have internal predecessors, (16936), 8215 states have call successors, (8215), 1225 states have call predecessors, (8215), 1216 states have return successors, (8301), 8015 states have call predecessors, (8301), 8215 states have call successors, (8301) [2021-11-19 13:36:10,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23027 states to 23027 states and 33452 transitions. [2021-11-19 13:36:10,086 INFO L78 Accepts]: Start accepts. Automaton has 23027 states and 33452 transitions. Word has length 297 [2021-11-19 13:36:10,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:36:10,088 INFO L470 AbstractCegarLoop]: Abstraction has 23027 states and 33452 transitions. [2021-11-19 13:36:10,088 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, (68), 3 states have call predecessors, (68), 4 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-19 13:36:10,089 INFO L276 IsEmpty]: Start isEmpty. Operand 23027 states and 33452 transitions. [2021-11-19 13:36:10,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2021-11-19 13:36:10,163 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:36:10,163 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 7, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:36:10,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-19 13:36:10,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 13:36:10,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:36:10,577 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:36:10,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:36:10,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1535933466, now seen corresponding path program 1 times [2021-11-19 13:36:10,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:36:10,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [554505264] [2021-11-19 13:36:10,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:36:10,580 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:36:10,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:36:10,583 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:36:10,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 13:36:12,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:36:12,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 1981 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:36:12,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:36:13,585 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 141 proven. 3 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-11-19 13:36:13,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:36:14,838 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2021-11-19 13:36:14,838 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:36:14,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [554505264] [2021-11-19 13:36:14,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [554505264] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:36:14,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [376574495] [2021-11-19 13:36:14,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:36:14,839 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:36:14,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:36:14,840 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:36:14,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-19 13:36:15,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:36:15,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 1981 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:36:15,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:36:18,001 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-11-19 13:36:18,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:36:19,433 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-11-19 13:36:19,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [376574495] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:36:19,434 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:36:19,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 16 [2021-11-19 13:36:19,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992991890] [2021-11-19 13:36:19,435 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:36:19,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:36:19,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:36:19,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:36:19,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:36:19,439 INFO L87 Difference]: Start difference. First operand 23027 states and 33452 transitions. Second operand has 5 states, 5 states have (on average 55.4) internal successors, (277), 5 states have internal predecessors, (277), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-19 13:36:21,571 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:36:28,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:36:28,305 INFO L93 Difference]: Finished difference Result 45210 states and 65767 transitions. [2021-11-19 13:36:28,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:36:28,306 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 55.4) internal successors, (277), 5 states have internal predecessors, (277), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) Word has length 298 [2021-11-19 13:36:28,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:36:28,486 INFO L225 Difference]: With dead ends: 45210 [2021-11-19 13:36:28,486 INFO L226 Difference]: Without dead ends: 23027 [2021-11-19 13:36:28,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1188 GetRequests, 1174 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:36:28,588 INFO L933 BasicCegarLoop]: 2723 mSDtfsCounter, 2581 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2581 SdHoareTripleChecker+Valid, 4173 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:36:28,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2581 Valid, 4173 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1274 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2021-11-19 13:36:28,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23027 states. [2021-11-19 13:36:30,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23027 to 23027. [2021-11-19 13:36:30,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23027 states, 13595 states have (on average 1.2450165502022803) internal successors, (16926), 13923 states have internal predecessors, (16926), 8215 states have call successors, (8215), 1225 states have call predecessors, (8215), 1216 states have return successors, (8301), 8015 states have call predecessors, (8301), 8215 states have call successors, (8301) [2021-11-19 13:36:30,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23027 states to 23027 states and 33442 transitions. [2021-11-19 13:36:30,781 INFO L78 Accepts]: Start accepts. Automaton has 23027 states and 33442 transitions. Word has length 298 [2021-11-19 13:36:30,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:36:30,782 INFO L470 AbstractCegarLoop]: Abstraction has 23027 states and 33442 transitions. [2021-11-19 13:36:30,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 55.4) internal successors, (277), 5 states have internal predecessors, (277), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-19 13:36:30,783 INFO L276 IsEmpty]: Start isEmpty. Operand 23027 states and 33442 transitions. [2021-11-19 13:36:30,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2021-11-19 13:36:30,846 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:36:30,846 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 7, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:36:30,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-19 13:36:31,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 13:36:31,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:36:31,269 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:36:31,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:36:31,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1337485047, now seen corresponding path program 1 times [2021-11-19 13:36:31,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:36:31,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1001163289] [2021-11-19 13:36:31,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:36:31,273 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:36:31,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:36:31,276 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:36:31,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 13:36:32,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:36:32,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 1982 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:36:32,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:36:33,794 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 141 proven. 3 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-11-19 13:36:33,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:36:35,014 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2021-11-19 13:36:35,014 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:36:35,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1001163289] [2021-11-19 13:36:35,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1001163289] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:36:35,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [63048474] [2021-11-19 13:36:35,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:36:35,015 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:36:35,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:36:35,016 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:36:35,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-19 13:36:36,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:36:36,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 1982 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:36:36,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:36:38,619 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-11-19 13:36:38,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:36:40,112 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-11-19 13:36:40,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [63048474] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:36:40,112 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:36:40,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 16 [2021-11-19 13:36:40,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972286017] [2021-11-19 13:36:40,113 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:36:40,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:36:40,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:36:40,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:36:40,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:36:40,116 INFO L87 Difference]: Start difference. First operand 23027 states and 33442 transitions. Second operand has 5 states, 5 states have (on average 55.8) internal successors, (279), 5 states have internal predecessors, (279), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-19 13:36:42,301 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:36:49,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:36:49,860 INFO L93 Difference]: Finished difference Result 45210 states and 65747 transitions. [2021-11-19 13:36:49,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:36:49,861 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 55.8) internal successors, (279), 5 states have internal predecessors, (279), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) Word has length 299 [2021-11-19 13:36:49,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:36:50,092 INFO L225 Difference]: With dead ends: 45210 [2021-11-19 13:36:50,093 INFO L226 Difference]: Without dead ends: 23027 [2021-11-19 13:36:50,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1192 GetRequests, 1178 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:36:50,213 INFO L933 BasicCegarLoop]: 2722 mSDtfsCounter, 3895 mSDsluCounter, 1449 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 1252 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3895 SdHoareTripleChecker+Valid, 4171 SdHoareTripleChecker+Invalid, 2527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1252 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:36:50,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3895 Valid, 4171 Invalid, 2527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1252 Valid, 1274 Invalid, 1 Unknown, 0 Unchecked, 7.8s Time] [2021-11-19 13:36:50,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23027 states. [2021-11-19 13:36:52,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23027 to 23027. [2021-11-19 13:36:52,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23027 states, 13595 states have (on average 1.2442809856564914) internal successors, (16916), 13923 states have internal predecessors, (16916), 8215 states have call successors, (8215), 1225 states have call predecessors, (8215), 1216 states have return successors, (8301), 8015 states have call predecessors, (8301), 8215 states have call successors, (8301) [2021-11-19 13:36:52,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23027 states to 23027 states and 33432 transitions. [2021-11-19 13:36:52,519 INFO L78 Accepts]: Start accepts. Automaton has 23027 states and 33432 transitions. Word has length 299 [2021-11-19 13:36:52,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:36:52,520 INFO L470 AbstractCegarLoop]: Abstraction has 23027 states and 33432 transitions. [2021-11-19 13:36:52,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 55.8) internal successors, (279), 5 states have internal predecessors, (279), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-19 13:36:52,521 INFO L276 IsEmpty]: Start isEmpty. Operand 23027 states and 33432 transitions. [2021-11-19 13:36:52,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2021-11-19 13:36:52,598 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:36:52,599 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 7, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:36:52,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 13:36:52,836 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2021-11-19 13:36:53,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:36:53,025 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:36:53,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:36:53,026 INFO L85 PathProgramCache]: Analyzing trace with hash 333662338, now seen corresponding path program 1 times [2021-11-19 13:36:53,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:36:53,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [424382501] [2021-11-19 13:36:53,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:36:53,028 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:36:53,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:36:53,029 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:36:53,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 13:36:54,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:36:54,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 1983 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:36:54,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:36:55,644 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 141 proven. 3 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-11-19 13:36:55,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:36:56,907 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2021-11-19 13:36:56,908 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:36:56,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [424382501] [2021-11-19 13:36:56,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [424382501] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:36:56,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1421459680] [2021-11-19 13:36:56,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:36:56,909 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:36:56,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:36:56,910 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:36:56,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-19 13:36:58,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:36:58,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 1983 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:36:58,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:37:00,215 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-11-19 13:37:00,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:37:01,501 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-11-19 13:37:01,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1421459680] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:37:01,501 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:37:01,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 16 [2021-11-19 13:37:01,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513061039] [2021-11-19 13:37:01,502 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:37:01,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:37:01,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:37:01,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:37:01,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:37:01,504 INFO L87 Difference]: Start difference. First operand 23027 states and 33432 transitions. Second operand has 5 states, 5 states have (on average 56.2) internal successors, (281), 5 states have internal predecessors, (281), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-19 13:37:03,644 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:37:10,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:37:10,489 INFO L93 Difference]: Finished difference Result 45210 states and 65727 transitions. [2021-11-19 13:37:10,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:37:10,490 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 56.2) internal successors, (281), 5 states have internal predecessors, (281), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) Word has length 300 [2021-11-19 13:37:10,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:37:10,656 INFO L225 Difference]: With dead ends: 45210 [2021-11-19 13:37:10,656 INFO L226 Difference]: Without dead ends: 23027 [2021-11-19 13:37:10,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1196 GetRequests, 1182 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:37:10,787 INFO L933 BasicCegarLoop]: 2721 mSDtfsCounter, 2579 mSDsluCounter, 1448 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2579 SdHoareTripleChecker+Valid, 4169 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:37:10,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2579 Valid, 4169 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1274 Invalid, 1 Unknown, 0 Unchecked, 7.5s Time] [2021-11-19 13:37:10,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23027 states. [2021-11-19 13:37:13,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23027 to 23027. [2021-11-19 13:37:13,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23027 states, 13595 states have (on average 1.2435454211107024) internal successors, (16906), 13923 states have internal predecessors, (16906), 8215 states have call successors, (8215), 1225 states have call predecessors, (8215), 1216 states have return successors, (8301), 8015 states have call predecessors, (8301), 8215 states have call successors, (8301) [2021-11-19 13:37:13,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23027 states to 23027 states and 33422 transitions. [2021-11-19 13:37:13,219 INFO L78 Accepts]: Start accepts. Automaton has 23027 states and 33422 transitions. Word has length 300 [2021-11-19 13:37:13,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:37:13,220 INFO L470 AbstractCegarLoop]: Abstraction has 23027 states and 33422 transitions. [2021-11-19 13:37:13,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.2) internal successors, (281), 5 states have internal predecessors, (281), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-19 13:37:13,221 INFO L276 IsEmpty]: Start isEmpty. Operand 23027 states and 33422 transitions. [2021-11-19 13:37:13,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2021-11-19 13:37:13,260 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:37:13,260 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 7, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:37:13,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-19 13:37:13,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 13:37:13,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:37:13,662 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:37:13,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:37:13,662 INFO L85 PathProgramCache]: Analyzing trace with hash -605553965, now seen corresponding path program 1 times [2021-11-19 13:37:13,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:37:13,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1888717789] [2021-11-19 13:37:13,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:37:13,664 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:37:13,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:37:13,665 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:37:13,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 13:37:14,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:37:14,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 1984 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:37:14,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:37:16,192 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 141 proven. 3 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-11-19 13:37:16,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:37:17,441 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2021-11-19 13:37:17,442 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:37:17,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1888717789] [2021-11-19 13:37:17,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1888717789] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:37:17,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1773445664] [2021-11-19 13:37:17,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:37:17,443 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:37:17,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:37:17,455 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:37:17,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-19 13:37:18,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:37:18,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 1984 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:37:18,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:37:20,874 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-11-19 13:37:20,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:37:22,241 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-11-19 13:37:22,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1773445664] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:37:22,241 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:37:22,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 16 [2021-11-19 13:37:22,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184809887] [2021-11-19 13:37:22,242 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:37:22,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:37:22,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:37:22,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:37:22,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:37:22,244 INFO L87 Difference]: Start difference. First operand 23027 states and 33422 transitions. Second operand has 5 states, 5 states have (on average 56.6) internal successors, (283), 5 states have internal predecessors, (283), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-19 13:37:24,395 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:37:31,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:37:31,655 INFO L93 Difference]: Finished difference Result 45210 states and 65707 transitions. [2021-11-19 13:37:31,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:37:31,656 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 56.6) internal successors, (283), 5 states have internal predecessors, (283), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) Word has length 301 [2021-11-19 13:37:31,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:37:31,915 INFO L225 Difference]: With dead ends: 45210 [2021-11-19 13:37:31,915 INFO L226 Difference]: Without dead ends: 23027 [2021-11-19 13:37:32,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1200 GetRequests, 1186 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:37:32,018 INFO L933 BasicCegarLoop]: 2720 mSDtfsCounter, 2578 mSDsluCounter, 1447 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2578 SdHoareTripleChecker+Valid, 4167 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:37:32,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2578 Valid, 4167 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1274 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2021-11-19 13:37:32,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23027 states. [2021-11-19 13:37:33,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23027 to 23027. [2021-11-19 13:37:33,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23027 states, 13595 states have (on average 1.2428098565649135) internal successors, (16896), 13923 states have internal predecessors, (16896), 8215 states have call successors, (8215), 1225 states have call predecessors, (8215), 1216 states have return successors, (8301), 8015 states have call predecessors, (8301), 8215 states have call successors, (8301) [2021-11-19 13:37:33,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23027 states to 23027 states and 33412 transitions. [2021-11-19 13:37:33,966 INFO L78 Accepts]: Start accepts. Automaton has 23027 states and 33412 transitions. Word has length 301 [2021-11-19 13:37:33,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:37:33,967 INFO L470 AbstractCegarLoop]: Abstraction has 23027 states and 33412 transitions. [2021-11-19 13:37:33,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.6) internal successors, (283), 5 states have internal predecessors, (283), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-19 13:37:33,968 INFO L276 IsEmpty]: Start isEmpty. Operand 23027 states and 33412 transitions. [2021-11-19 13:37:34,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2021-11-19 13:37:34,152 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:37:34,152 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 7, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:37:34,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-19 13:37:34,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 13:37:34,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:37:34,554 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:37:34,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:37:34,555 INFO L85 PathProgramCache]: Analyzing trace with hash 458028318, now seen corresponding path program 1 times [2021-11-19 13:37:34,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:37:34,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1508217998] [2021-11-19 13:37:34,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:37:34,557 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:37:34,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:37:34,558 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:37:34,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 13:37:35,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:37:35,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 1985 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:37:35,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:37:37,049 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 141 proven. 3 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-11-19 13:37:37,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:37:38,322 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2021-11-19 13:37:38,322 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:37:38,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1508217998] [2021-11-19 13:37:38,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1508217998] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:37:38,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1401714289] [2021-11-19 13:37:38,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:37:38,323 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:37:38,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:37:38,324 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:37:38,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-19 13:37:39,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:37:39,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 1985 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:37:39,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:37:41,975 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-11-19 13:37:41,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:37:43,280 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-11-19 13:37:43,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1401714289] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:37:43,280 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:37:43,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 16 [2021-11-19 13:37:43,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757531551] [2021-11-19 13:37:43,281 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:37:43,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:37:43,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:37:43,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:37:43,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:37:43,283 INFO L87 Difference]: Start difference. First operand 23027 states and 33412 transitions. Second operand has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-19 13:37:45,421 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:37:52,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:37:52,646 INFO L93 Difference]: Finished difference Result 45210 states and 65687 transitions. [2021-11-19 13:37:52,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:37:52,647 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) Word has length 302 [2021-11-19 13:37:52,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:37:52,794 INFO L225 Difference]: With dead ends: 45210 [2021-11-19 13:37:52,794 INFO L226 Difference]: Without dead ends: 23027 [2021-11-19 13:37:52,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1204 GetRequests, 1190 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:37:52,890 INFO L933 BasicCegarLoop]: 2719 mSDtfsCounter, 2577 mSDsluCounter, 1446 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2577 SdHoareTripleChecker+Valid, 4165 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:37:52,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2577 Valid, 4165 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1274 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2021-11-19 13:37:52,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23027 states. [2021-11-19 13:37:54,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23027 to 23027. [2021-11-19 13:37:54,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23027 states, 13595 states have (on average 1.2420742920191248) internal successors, (16886), 13923 states have internal predecessors, (16886), 8215 states have call successors, (8215), 1225 states have call predecessors, (8215), 1216 states have return successors, (8301), 8015 states have call predecessors, (8301), 8215 states have call successors, (8301) [2021-11-19 13:37:55,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23027 states to 23027 states and 33402 transitions. [2021-11-19 13:37:55,053 INFO L78 Accepts]: Start accepts. Automaton has 23027 states and 33402 transitions. Word has length 302 [2021-11-19 13:37:55,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:37:55,054 INFO L470 AbstractCegarLoop]: Abstraction has 23027 states and 33402 transitions. [2021-11-19 13:37:55,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-19 13:37:55,055 INFO L276 IsEmpty]: Start isEmpty. Operand 23027 states and 33402 transitions. [2021-11-19 13:37:55,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2021-11-19 13:37:55,098 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:37:55,099 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 7, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:37:55,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 13:37:55,310 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2021-11-19 13:37:55,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:37:55,500 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:37:55,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:37:55,501 INFO L85 PathProgramCache]: Analyzing trace with hash -816142673, now seen corresponding path program 1 times [2021-11-19 13:37:55,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:37:55,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [262964041] [2021-11-19 13:37:55,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:37:55,503 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:37:55,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:37:55,504 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:37:55,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 13:37:56,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:37:56,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 1986 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:37:56,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:37:58,169 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 141 proven. 3 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-11-19 13:37:58,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:37:59,403 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2021-11-19 13:37:59,403 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:37:59,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [262964041] [2021-11-19 13:37:59,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [262964041] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:37:59,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1830785608] [2021-11-19 13:37:59,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:37:59,404 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:37:59,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:37:59,404 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:37:59,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-19 13:38:00,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:38:00,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 1986 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:38:00,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:38:02,950 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-11-19 13:38:02,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:38:04,224 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-11-19 13:38:04,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1830785608] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:38:04,224 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:38:04,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 16 [2021-11-19 13:38:04,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735835707] [2021-11-19 13:38:04,225 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:38:04,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:38:04,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:38:04,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:38:04,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:38:04,227 INFO L87 Difference]: Start difference. First operand 23027 states and 33402 transitions. Second operand has 5 states, 5 states have (on average 57.4) internal successors, (287), 5 states have internal predecessors, (287), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-19 13:38:06,450 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:38:13,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:38:13,503 INFO L93 Difference]: Finished difference Result 45210 states and 65667 transitions. [2021-11-19 13:38:13,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:38:13,510 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 57.4) internal successors, (287), 5 states have internal predecessors, (287), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) Word has length 303 [2021-11-19 13:38:13,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:38:13,608 INFO L225 Difference]: With dead ends: 45210 [2021-11-19 13:38:13,608 INFO L226 Difference]: Without dead ends: 23027 [2021-11-19 13:38:13,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1208 GetRequests, 1194 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:38:13,686 INFO L933 BasicCegarLoop]: 2718 mSDtfsCounter, 2576 mSDsluCounter, 1445 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2576 SdHoareTripleChecker+Valid, 4163 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:38:13,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2576 Valid, 4163 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1274 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2021-11-19 13:38:13,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23027 states. [2021-11-19 13:38:15,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23027 to 23027. [2021-11-19 13:38:15,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23027 states, 13595 states have (on average 1.2413387274733358) internal successors, (16876), 13923 states have internal predecessors, (16876), 8215 states have call successors, (8215), 1225 states have call predecessors, (8215), 1216 states have return successors, (8301), 8015 states have call predecessors, (8301), 8215 states have call successors, (8301) [2021-11-19 13:38:15,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23027 states to 23027 states and 33392 transitions. [2021-11-19 13:38:15,818 INFO L78 Accepts]: Start accepts. Automaton has 23027 states and 33392 transitions. Word has length 303 [2021-11-19 13:38:15,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:38:15,819 INFO L470 AbstractCegarLoop]: Abstraction has 23027 states and 33392 transitions. [2021-11-19 13:38:15,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.4) internal successors, (287), 5 states have internal predecessors, (287), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-19 13:38:15,819 INFO L276 IsEmpty]: Start isEmpty. Operand 23027 states and 33392 transitions. [2021-11-19 13:38:15,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2021-11-19 13:38:15,864 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:38:15,865 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 7, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:38:15,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-19 13:38:16,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-19 13:38:16,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:38:16,269 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:38:16,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:38:16,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1546221126, now seen corresponding path program 1 times [2021-11-19 13:38:16,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:38:16,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [536065692] [2021-11-19 13:38:16,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:38:16,273 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:38:16,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:38:16,274 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:38:16,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-19 13:38:17,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:38:17,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 1987 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:38:17,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:38:18,744 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 141 proven. 3 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-11-19 13:38:18,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:38:20,083 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2021-11-19 13:38:20,083 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:38:20,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [536065692] [2021-11-19 13:38:20,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [536065692] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:38:20,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [877310375] [2021-11-19 13:38:20,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:38:20,084 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:38:20,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:38:20,085 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:38:20,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-19 13:38:21,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:38:21,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 1987 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:38:21,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:38:23,377 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-11-19 13:38:23,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:38:24,843 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-11-19 13:38:24,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [877310375] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:38:24,843 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:38:24,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 16 [2021-11-19 13:38:24,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917157811] [2021-11-19 13:38:24,844 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:38:24,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:38:24,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:38:24,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:38:24,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:38:24,846 INFO L87 Difference]: Start difference. First operand 23027 states and 33392 transitions. Second operand has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-19 13:38:26,984 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:38:33,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:38:33,771 INFO L93 Difference]: Finished difference Result 45210 states and 65647 transitions. [2021-11-19 13:38:33,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:38:33,772 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) Word has length 304 [2021-11-19 13:38:33,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:38:33,920 INFO L225 Difference]: With dead ends: 45210 [2021-11-19 13:38:33,920 INFO L226 Difference]: Without dead ends: 23027 [2021-11-19 13:38:34,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1212 GetRequests, 1198 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:38:34,029 INFO L933 BasicCegarLoop]: 2717 mSDtfsCounter, 2575 mSDsluCounter, 1444 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2575 SdHoareTripleChecker+Valid, 4161 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:38:34,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2575 Valid, 4161 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1274 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2021-11-19 13:38:34,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23027 states. [2021-11-19 13:38:36,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23027 to 23027. [2021-11-19 13:38:36,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23027 states, 13595 states have (on average 1.240603162927547) internal successors, (16866), 13923 states have internal predecessors, (16866), 8215 states have call successors, (8215), 1225 states have call predecessors, (8215), 1216 states have return successors, (8301), 8015 states have call predecessors, (8301), 8215 states have call successors, (8301) [2021-11-19 13:38:36,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23027 states to 23027 states and 33382 transitions. [2021-11-19 13:38:36,300 INFO L78 Accepts]: Start accepts. Automaton has 23027 states and 33382 transitions. Word has length 304 [2021-11-19 13:38:36,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:38:36,300 INFO L470 AbstractCegarLoop]: Abstraction has 23027 states and 33382 transitions. [2021-11-19 13:38:36,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-19 13:38:36,301 INFO L276 IsEmpty]: Start isEmpty. Operand 23027 states and 33382 transitions. [2021-11-19 13:38:36,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2021-11-19 13:38:36,341 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:38:36,341 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 7, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:38:36,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-19 13:38:36,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-19 13:38:36,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:38:36,755 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:38:36,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:38:36,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1705667211, now seen corresponding path program 1 times [2021-11-19 13:38:36,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:38:36,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [442868656] [2021-11-19 13:38:36,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:38:36,758 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:38:36,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:38:36,759 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:38:36,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-19 13:38:37,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:38:37,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 1988 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:38:37,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:38:39,120 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 141 proven. 3 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-11-19 13:38:39,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:38:40,279 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2021-11-19 13:38:40,279 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:38:40,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [442868656] [2021-11-19 13:38:40,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [442868656] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:38:40,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [775012601] [2021-11-19 13:38:40,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:38:40,280 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:38:40,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:38:40,281 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:38:40,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-19 13:38:41,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:38:41,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 1988 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:38:41,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:38:42,608 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 166 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-11-19 13:38:42,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:38:43,529 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2021-11-19 13:38:43,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [775012601] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:38:43,530 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:38:43,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8, 8] total 15 [2021-11-19 13:38:43,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788226930] [2021-11-19 13:38:43,530 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:38:43,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:38:43,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:38:43,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:38:43,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-11-19 13:38:43,533 INFO L87 Difference]: Start difference. First operand 23027 states and 33382 transitions. Second operand has 4 states, 4 states have (on average 60.25) internal successors, (241), 4 states have internal predecessors, (241), 4 states have call successors, (59), 3 states have call predecessors, (59), 3 states have return successors, (57), 4 states have call predecessors, (57), 4 states have call successors, (57) [2021-11-19 13:38:45,750 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:38:55,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:38:55,295 INFO L93 Difference]: Finished difference Result 63797 states and 92664 transitions. [2021-11-19 13:38:55,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:38:55,296 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.25) internal successors, (241), 4 states have internal predecessors, (241), 4 states have call successors, (59), 3 states have call predecessors, (59), 3 states have return successors, (57), 4 states have call predecessors, (57), 4 states have call successors, (57) Word has length 305 [2021-11-19 13:38:55,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:38:55,500 INFO L225 Difference]: With dead ends: 63797 [2021-11-19 13:38:55,500 INFO L226 Difference]: Without dead ends: 41614 [2021-11-19 13:38:55,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1216 GetRequests, 1203 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-11-19 13:38:55,582 INFO L933 BasicCegarLoop]: 5616 mSDtfsCounter, 4517 mSDsluCounter, 3444 mSDsCounter, 0 mSdLazyCounter, 1358 mSolverCounterSat, 493 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4517 SdHoareTripleChecker+Valid, 9060 SdHoareTripleChecker+Invalid, 1852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 493 IncrementalHoareTripleChecker+Valid, 1358 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:38:55,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4517 Valid, 9060 Invalid, 1852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [493 Valid, 1358 Invalid, 1 Unknown, 0 Unchecked, 8.4s Time] [2021-11-19 13:38:55,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41614 states. [2021-11-19 13:38:59,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41614 to 41598. [2021-11-19 13:38:59,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41598 states, 24373 states have (on average 1.2433840725392853) internal successors, (30305), 24945 states have internal predecessors, (30305), 15002 states have call successors, (15002), 2235 states have call predecessors, (15002), 2222 states have return successors, (15088), 14662 states have call predecessors, (15088), 15002 states have call successors, (15088) [2021-11-19 13:38:59,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41598 states to 41598 states and 60395 transitions. [2021-11-19 13:38:59,582 INFO L78 Accepts]: Start accepts. Automaton has 41598 states and 60395 transitions. Word has length 305 [2021-11-19 13:38:59,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:38:59,582 INFO L470 AbstractCegarLoop]: Abstraction has 41598 states and 60395 transitions. [2021-11-19 13:38:59,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.25) internal successors, (241), 4 states have internal predecessors, (241), 4 states have call successors, (59), 3 states have call predecessors, (59), 3 states have return successors, (57), 4 states have call predecessors, (57), 4 states have call successors, (57) [2021-11-19 13:38:59,583 INFO L276 IsEmpty]: Start isEmpty. Operand 41598 states and 60395 transitions. [2021-11-19 13:38:59,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2021-11-19 13:38:59,708 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:38:59,730 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:38:59,743 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2021-11-19 13:38:59,967 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-11-19 13:39:00,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:39:00,137 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:39:00,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:39:00,138 INFO L85 PathProgramCache]: Analyzing trace with hash -278251154, now seen corresponding path program 1 times [2021-11-19 13:39:00,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:39:00,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [341587513] [2021-11-19 13:39:00,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:39:00,140 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:39:00,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:39:00,142 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:39:00,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-19 13:39:01,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:39:01,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 2163 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:39:01,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:39:03,066 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 279 proven. 3 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2021-11-19 13:39:03,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:39:04,485 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 15 proven. 27 refuted. 0 times theorem prover too weak. 677 trivial. 0 not checked. [2021-11-19 13:39:04,485 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:39:04,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [341587513] [2021-11-19 13:39:04,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [341587513] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:39:04,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [35003089] [2021-11-19 13:39:04,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:39:04,486 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:39:04,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:39:04,487 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:39:04,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e742ac2b-93ae-462e-aab1-7341cb881a9f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-11-19 13:39:05,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:39:05,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 2163 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:39:05,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:39:06,799 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 312 proven. 0 refuted. 0 times theorem prover too weak. 407 trivial. 0 not checked. [2021-11-19 13:39:06,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:39:07,886 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 665 trivial. 0 not checked. [2021-11-19 13:39:07,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [35003089] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:39:07,886 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:39:07,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8, 8] total 15 [2021-11-19 13:39:07,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340013230] [2021-11-19 13:39:07,887 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:39:07,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:39:07,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:39:07,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:39:07,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-11-19 13:39:07,889 INFO L87 Difference]: Start difference. First operand 41598 states and 60395 transitions. Second operand has 4 states, 4 states have (on average 68.5) internal successors, (274), 4 states have internal predecessors, (274), 4 states have call successors, (66), 3 states have call predecessors, (66), 3 states have return successors, (64), 4 states have call predecessors, (64), 4 states have call successors, (64) [2021-11-19 13:39:10,020 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:39:19,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:39:19,588 INFO L93 Difference]: Finished difference Result 94602 states and 137329 transitions. [2021-11-19 13:39:19,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:39:19,596 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 68.5) internal successors, (274), 4 states have internal predecessors, (274), 4 states have call successors, (66), 3 states have call predecessors, (66), 3 states have return successors, (64), 4 states have call predecessors, (64), 4 states have call successors, (64) Word has length 407 [2021-11-19 13:39:19,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:39:19,881 INFO L225 Difference]: With dead ends: 94602 [2021-11-19 13:39:19,881 INFO L226 Difference]: Without dead ends: 53848 [2021-11-19 13:39:20,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1624 GetRequests, 1611 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-11-19 13:39:20,030 INFO L933 BasicCegarLoop]: 5139 mSDtfsCounter, 4700 mSDsluCounter, 3541 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 34 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4700 SdHoareTripleChecker+Valid, 8680 SdHoareTripleChecker+Invalid, 1207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:39:20,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4700 Valid, 8680 Invalid, 1207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1172 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2021-11-19 13:39:20,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53848 states. [2021-11-19 13:39:25,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53848 to 53832. [2021-11-19 13:39:25,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53832 states, 31503 states have (on average 1.242262641653176) internal successors, (39135), 32205 states have internal predecessors, (39135), 19416 states have call successors, (19416), 2929 states have call predecessors, (19416), 2912 states have return successors, (19502), 19016 states have call predecessors, (19502), 19416 states have call successors, (19502) [2021-11-19 13:39:25,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53832 states to 53832 states and 78053 transitions. [2021-11-19 13:39:25,835 INFO L78 Accepts]: Start accepts. Automaton has 53832 states and 78053 transitions. Word has length 407 [2021-11-19 13:39:25,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:39:25,836 INFO L470 AbstractCegarLoop]: Abstraction has 53832 states and 78053 transitions. [2021-11-19 13:39:25,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.5) internal successors, (274), 4 states have internal predecessors, (274), 4 states have call successors, (66), 3 states have call predecessors, (66), 3 states have return successors, (64), 4 states have call predecessors, (64), 4 states have call successors, (64) [2021-11-19 13:39:25,837 INFO L276 IsEmpty]: Start isEmpty. Operand 53832 states and 78053 transitions.