./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8 --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 bf654a6a1eca45ac77a809162568fb8018795c05fa9eb6946186269d2e2c9c25 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:36:41,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:36:41,654 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:36:41,722 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:36:41,723 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:36:41,728 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:36:41,731 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:36:41,735 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:36:41,739 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:36:41,746 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:36:41,747 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:36:41,750 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:36:41,750 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:36:41,753 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:36:41,757 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:36:41,766 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:36:41,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:36:41,770 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:36:41,773 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:36:41,783 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:36:41,785 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:36:41,787 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:36:41,791 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:36:41,793 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:36:41,803 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:36:41,804 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:36:41,804 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:36:41,807 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:36:41,808 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:36:41,810 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:36:41,811 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:36:41,812 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:36:41,814 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:36:41,816 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:36:41,818 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:36:41,818 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:36:41,820 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:36:41,820 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:36:41,820 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:36:41,822 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:36:41,823 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:36:41,824 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:36:41,872 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:36:41,873 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:36:41,874 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:36:41,875 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:36:41,875 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:36:41,875 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:36:41,876 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:36:41,883 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:36:41,883 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:36:41,884 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:36:41,885 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:36:41,886 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:36:41,886 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:36:41,886 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:36:41,887 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:36:41,888 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:36:41,888 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:36:41,888 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:36:41,888 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:36:41,889 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:36:41,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:36:41,889 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:36:41,889 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:36:41,890 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:36:41,890 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:36:41,890 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:36:41,891 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:36:41,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:36:41,891 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:36:41,894 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:36:41,894 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:36:41,894 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:36:41,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:36:41,895 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:36:41,895 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:36:41,895 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:36:41,896 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_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf654a6a1eca45ac77a809162568fb8018795c05fa9eb6946186269d2e2c9c25 [2021-11-07 01:36:42,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:36:42,291 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:36:42,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:36:42,296 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:36:42,297 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:36:42,299 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-11-07 01:36:42,374 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/data/62906f9a1/3407c376c32b4b9a89666e298512b639/FLAG442811be5 [2021-11-07 01:36:43,654 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:36:43,655 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-11-07 01:36:43,715 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/data/62906f9a1/3407c376c32b4b9a89666e298512b639/FLAG442811be5 [2021-11-07 01:36:43,803 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/data/62906f9a1/3407c376c32b4b9a89666e298512b639 [2021-11-07 01:36:43,806 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:36:43,808 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:36:43,813 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:36:43,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:36:43,818 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:36:43,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:36:43" (1/1) ... [2021-11-07 01:36:43,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24231d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:43, skipping insertion in model container [2021-11-07 01:36:43,822 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:36:43" (1/1) ... [2021-11-07 01:36:43,832 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:36:44,065 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:36:45,971 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:36:46,270 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:36:46,306 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:36:46,327 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:36:46,541 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:36:46,560 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:36:46,580 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:36:46,582 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:36:46,605 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:36:46,606 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:36:46,607 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:36:46,616 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:36:46,632 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:36:46,640 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:36:47,049 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:36:47,555 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:36:47,556 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:36:47,562 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:36:47,605 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:36:47,612 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:36:47,619 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:36:47,626 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:36:47,628 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:36:47,629 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:36:47,645 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[323188,323201] [2021-11-07 01:36:47,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:36:48,003 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) [2021-11-07 01:36:48,004 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6a3f5cd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:48, skipping insertion in model container [2021-11-07 01:36:48,004 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:36:48,005 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:36:48,009 INFO L168 Benchmark]: Toolchain (without parser) took 4199.49 ms. Allocated memory was 107.0 MB in the beginning and 161.5 MB in the end (delta: 54.5 MB). Free memory was 73.6 MB in the beginning and 95.4 MB in the end (delta: -21.8 MB). Peak memory consumption was 49.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:36:48,010 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 86.0 MB. Free memory was 65.5 MB in the beginning and 65.4 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:36:48,012 INFO L168 Benchmark]: CACSL2BoogieTranslator took 4192.29 ms. Allocated memory was 107.0 MB in the beginning and 161.5 MB in the end (delta: 54.5 MB). Free memory was 73.2 MB in the beginning and 95.4 MB in the end (delta: -22.2 MB). Peak memory consumption was 49.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:36:48,014 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 86.0 MB. Free memory was 65.5 MB in the beginning and 65.4 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 4192.29 ms. Allocated memory was 107.0 MB in the beginning and 161.5 MB in the end (delta: 54.5 MB). Free memory was 73.2 MB in the beginning and 95.4 MB in the end (delta: -22.2 MB). Peak memory consumption was 49.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3934]: 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_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8 --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 bf654a6a1eca45ac77a809162568fb8018795c05fa9eb6946186269d2e2c9c25 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:36:50,806 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:36:50,810 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:36:50,904 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:36:50,905 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:36:50,912 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:36:50,915 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:36:50,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:36:50,926 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:36:50,935 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:36:50,937 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:36:50,939 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:36:50,939 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:36:50,941 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:36:50,943 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:36:50,945 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:36:50,947 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:36:50,948 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:36:50,951 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:36:50,955 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:36:50,957 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:36:50,960 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:36:50,962 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:36:50,963 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:36:50,968 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:36:50,969 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:36:50,969 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:36:50,971 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:36:50,972 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:36:50,974 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:36:50,974 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:36:50,975 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:36:50,977 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:36:50,978 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:36:50,980 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:36:50,981 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:36:50,982 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:36:50,983 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:36:50,983 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:36:50,985 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:36:50,986 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:36:50,987 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:36:51,022 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:36:51,025 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:36:51,027 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:36:51,027 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:36:51,028 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:36:51,028 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:36:51,028 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:36:51,029 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:36:51,029 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:36:51,032 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:36:51,033 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:36:51,033 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:36:51,034 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:36:51,034 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:36:51,034 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:36:51,035 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:36:51,035 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:36:51,035 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:36:51,036 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:36:51,036 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:36:51,036 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:36:51,037 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:36:51,037 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:36:51,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:36:51,038 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:36:51,038 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:36:51,038 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:36:51,039 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:36:51,039 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:36:51,039 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:36:51,040 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:36:51,040 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:36:51,040 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_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf654a6a1eca45ac77a809162568fb8018795c05fa9eb6946186269d2e2c9c25 [2021-11-07 01:36:51,524 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:36:51,551 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:36:51,555 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:36:51,556 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:36:51,557 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:36:51,558 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-11-07 01:36:51,635 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/data/3b5b99ab7/7536be5f823b4f0491620e577bd8515f/FLAGb1010d42e [2021-11-07 01:36:52,655 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:36:52,655 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-11-07 01:36:52,718 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/data/3b5b99ab7/7536be5f823b4f0491620e577bd8515f/FLAGb1010d42e [2021-11-07 01:36:53,019 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/data/3b5b99ab7/7536be5f823b4f0491620e577bd8515f [2021-11-07 01:36:53,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:36:53,023 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:36:53,025 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:36:53,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:36:53,029 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:36:53,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:36:53" (1/1) ... [2021-11-07 01:36:53,032 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ad0c5f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:53, skipping insertion in model container [2021-11-07 01:36:53,032 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:36:53" (1/1) ... [2021-11-07 01:36:53,041 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:36:53,218 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:36:56,904 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[323188,323201] [2021-11-07 01:36:57,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:36:57,312 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:36:57,380 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:36:57,772 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[323188,323201] [2021-11-07 01:36:57,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:36:57,885 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:36:58,707 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[323188,323201] [2021-11-07 01:36:58,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:36:59,133 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:36:59,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:59 WrapperNode [2021-11-07 01:36:59,134 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:36:59,136 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:36:59,136 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:36:59,136 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:36:59,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:59" (1/1) ... [2021-11-07 01:36:59,323 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:59" (1/1) ... [2021-11-07 01:36:59,922 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:36:59,923 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:36:59,923 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:36:59,924 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:36:59,936 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:59" (1/1) ... [2021-11-07 01:36:59,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:59" (1/1) ... [2021-11-07 01:37:00,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:59" (1/1) ... [2021-11-07 01:37:00,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:59" (1/1) ... [2021-11-07 01:37:00,458 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:59" (1/1) ... [2021-11-07 01:37:00,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:59" (1/1) ... [2021-11-07 01:37:00,807 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:59" (1/1) ... [2021-11-07 01:37:00,916 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:37:00,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:37:00,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:37:00,920 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:37:00,921 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:59" (1/1) ... [2021-11-07 01:37:00,932 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:37:00,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:37:00,969 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:37:00,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:37:01,024 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_dtr_rts [2021-11-07 01:37:01,024 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_dtr_rts [2021-11-07 01:37:01,025 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_remove [2021-11-07 01:37:01,025 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_remove [2021-11-07 01:37:01,025 INFO L130 BoogieDeclarations]: Found specification of procedure serial_chars_in_buffer [2021-11-07 01:37:01,025 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_chars_in_buffer [2021-11-07 01:37:01,026 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_activate [2021-11-07 01:37:01,026 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_activate [2021-11-07 01:37:01,026 INFO L130 BoogieDeclarations]: Found specification of procedure serial_ioctl [2021-11-07 01:37:01,026 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_ioctl [2021-11-07 01:37:01,026 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write_room [2021-11-07 01:37:01,027 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write_room [2021-11-07 01:37:01,027 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_probe [2021-11-07 01:37:01,027 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_probe [2021-11-07 01:37:01,027 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-07 01:37:01,028 INFO L130 BoogieDeclarations]: Found specification of procedure serial_get_icount [2021-11-07 01:37:01,028 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_get_icount [2021-11-07 01:37:01,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:37:01,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 01:37:01,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:37:01,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 01:37:01,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 01:37:01,029 INFO L130 BoogieDeclarations]: Found specification of procedure serial_cleanup [2021-11-07 01:37:01,029 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_cleanup [2021-11-07 01:37:01,029 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_carrier_raised [2021-11-07 01:37:01,030 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_carrier_raised [2021-11-07 01:37:01,030 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2021-11-07 01:37:01,030 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2021-11-07 01:37:01,030 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_reset_resume [2021-11-07 01:37:01,031 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_reset_resume [2021-11-07 01:37:01,031 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_read_bulk_callback [2021-11-07 01:37:01,031 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_read_bulk_callback [2021-11-07 01:37:01,031 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_shutdown [2021-11-07 01:37:01,031 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_shutdown [2021-11-07 01:37:01,032 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-07 01:37:01,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-07 01:37:01,032 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-07 01:37:01,032 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-07 01:37:01,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:37:01,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:37:01,033 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 01:37:01,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 01:37:01,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 01:37:01,034 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 01:37:01,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 01:37:01,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 01:37:01,034 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_put [2021-11-07 01:37:01,034 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_put [2021-11-07 01:37:01,035 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_serial [2021-11-07 01:37:01,035 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_serial [2021-11-07 01:37:01,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 01:37:01,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:37:01,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:37:01,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:37:01,036 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-11-07 01:37:01,036 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-11-07 01:37:01,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:37:01,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:37:01,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 01:37:01,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 01:37:01,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 01:37:01,037 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~C_INT [2021-11-07 01:37:01,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~C_INT [2021-11-07 01:37:01,038 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_suspend [2021-11-07 01:37:01,038 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_suspend [2021-11-07 01:37:01,038 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_UINT~X~C_UINT~TO~C_INT [2021-11-07 01:37:01,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_UINT~X~C_UINT~TO~C_INT [2021-11-07 01:37:01,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:37:01,039 INFO L130 BoogieDeclarations]: Found specification of procedure serial_unthrottle [2021-11-07 01:37:01,039 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_unthrottle [2021-11-07 01:37:01,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:37:01,040 INFO L130 BoogieDeclarations]: Found specification of procedure serial_throttle [2021-11-07 01:37:01,040 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_throttle [2021-11-07 01:37:01,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 01:37:01,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:37:01,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 01:37:01,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:37:01,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:37:01,041 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmget [2021-11-07 01:37:01,041 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmget [2021-11-07 01:37:01,042 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2021-11-07 01:37:01,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2021-11-07 01:37:01,042 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2021-11-07 01:37:01,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2021-11-07 01:37:01,042 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_resume [2021-11-07 01:37:01,043 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_resume [2021-11-07 01:37:01,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 01:37:01,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 01:37:01,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 01:37:01,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 01:37:01,044 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2021-11-07 01:37:01,044 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2021-11-07 01:37:01,044 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_INT~TO~VOID [2021-11-07 01:37:01,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_INT~TO~VOID [2021-11-07 01:37:01,044 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmset [2021-11-07 01:37:01,045 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmset [2021-11-07 01:40:06,321 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:40:06,322 INFO L299 CfgBuilder]: Removed 2755 assume(true) statements. [2021-11-07 01:40:06,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:40:06 BoogieIcfgContainer [2021-11-07 01:40:06,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:40:06,342 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:40:06,342 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:40:06,346 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:40:06,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:36:53" (1/3) ... [2021-11-07 01:40:06,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70c5d2a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:40:06, skipping insertion in model container [2021-11-07 01:40:06,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:59" (2/3) ... [2021-11-07 01:40:06,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70c5d2a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:40:06, skipping insertion in model container [2021-11-07 01:40:06,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:40:06" (3/3) ... [2021-11-07 01:40:06,351 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-11-07 01:40:06,358 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:40:06,359 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 57 error locations. [2021-11-07 01:40:06,465 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:40:06,478 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 [2021-11-07 01:40:06,480 INFO L340 AbstractCegarLoop]: Starting to check reachability of 57 error locations. [2021-11-07 01:40:06,569 INFO L276 IsEmpty]: Start isEmpty. Operand has 2965 states, 2778 states have (on average 1.3855291576673867) internal successors, (3849), 2843 states have internal predecessors, (3849), 97 states have call successors, (97), 32 states have call predecessors, (97), 32 states have return successors, (97), 91 states have call predecessors, (97), 97 states have call successors, (97) [2021-11-07 01:40:06,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-07 01:40:06,582 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:06,583 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:06,584 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting serial_port_activateErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~X~C_INT~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~C_INT~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION (and 55 more)] === [2021-11-07 01:40:06,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:06,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1375494702, now seen corresponding path program 1 times [2021-11-07 01:40:06,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:40:06,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [561827271] [2021-11-07 01:40:06,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:06,643 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:40:06,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:40:06,650 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:40:06,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:40:38,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:39,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 3885 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:40:39,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:40,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:40,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:41,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:41,910 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:40:41,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [561827271] [2021-11-07 01:40:41,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [561827271] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:40:41,911 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:40:41,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:40:41,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652988644] [2021-11-07 01:40:41,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:40:41,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:40:41,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:40:41,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:40:41,950 INFO L87 Difference]: Start difference. First operand has 2965 states, 2778 states have (on average 1.3855291576673867) internal successors, (3849), 2843 states have internal predecessors, (3849), 97 states have call successors, (97), 32 states have call predecessors, (97), 32 states have return successors, (97), 91 states have call predecessors, (97), 97 states have call successors, (97) Second operand has 2 states, 2 states have (on average 47.0) internal successors, (94), 2 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:42,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:42,294 INFO L93 Difference]: Finished difference Result 5926 states and 8167 transitions. [2021-11-07 01:40:42,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:40:42,295 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 47.0) internal successors, (94), 2 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-07 01:40:42,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:42,346 INFO L225 Difference]: With dead ends: 5926 [2021-11-07 01:40:42,346 INFO L226 Difference]: Without dead ends: 2950 [2021-11-07 01:40:42,373 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:40:42,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2021-11-07 01:40:42,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 2950. [2021-11-07 01:40:42,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2950 states, 2764 states have (on average 1.3371924746743848) internal successors, (3696), 2828 states have internal predecessors, (3696), 97 states have call successors, (97), 32 states have call predecessors, (97), 32 states have return successors, (97), 91 states have call predecessors, (97), 97 states have call successors, (97) [2021-11-07 01:40:42,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2950 states to 2950 states and 3890 transitions. [2021-11-07 01:40:42,619 INFO L78 Accepts]: Start accepts. Automaton has 2950 states and 3890 transitions. Word has length 95 [2021-11-07 01:40:42,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:42,619 INFO L470 AbstractCegarLoop]: Abstraction has 2950 states and 3890 transitions. [2021-11-07 01:40:42,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 47.0) internal successors, (94), 2 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:42,620 INFO L276 IsEmpty]: Start isEmpty. Operand 2950 states and 3890 transitions. [2021-11-07 01:40:42,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-07 01:40:42,634 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:42,634 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:42,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:42,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:40:42,857 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting serial_port_activateErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~X~C_INT~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~C_INT~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION (and 55 more)] === [2021-11-07 01:40:42,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:42,858 INFO L85 PathProgramCache]: Analyzing trace with hash -416904642, now seen corresponding path program 1 times [2021-11-07 01:40:42,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:40:42,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [125463881] [2021-11-07 01:40:42,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:42,869 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:40:42,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:40:42,870 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:40:42,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:41:15,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:41:15,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 3885 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:41:15,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:41:16,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:41:16,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:41:17,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:41:17,470 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:41:17,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [125463881] [2021-11-07 01:41:17,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [125463881] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:41:17,471 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:41:17,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:41:17,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178580100] [2021-11-07 01:41:17,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:41:17,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:41:17,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:41:17,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:41:17,476 INFO L87 Difference]: Start difference. First operand 2950 states and 3890 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:18,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:41:18,819 INFO L93 Difference]: Finished difference Result 5869 states and 7765 transitions. [2021-11-07 01:41:18,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:41:18,821 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-07 01:41:18,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:41:18,849 INFO L225 Difference]: With dead ends: 5869 [2021-11-07 01:41:18,849 INFO L226 Difference]: Without dead ends: 2967 [2021-11-07 01:41:18,866 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:41:18,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2967 states. [2021-11-07 01:41:18,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2967 to 2967. [2021-11-07 01:41:18,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2967 states, 2781 states have (on average 1.335131247752607) internal successors, (3713), 2845 states have internal predecessors, (3713), 97 states have call successors, (97), 32 states have call predecessors, (97), 32 states have return successors, (97), 91 states have call predecessors, (97), 97 states have call successors, (97) [2021-11-07 01:41:19,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2967 states to 2967 states and 3907 transitions. [2021-11-07 01:41:19,001 INFO L78 Accepts]: Start accepts. Automaton has 2967 states and 3907 transitions. Word has length 95 [2021-11-07 01:41:19,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:41:19,002 INFO L470 AbstractCegarLoop]: Abstraction has 2967 states and 3907 transitions. [2021-11-07 01:41:19,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:19,003 INFO L276 IsEmpty]: Start isEmpty. Operand 2967 states and 3907 transitions. [2021-11-07 01:41:19,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-07 01:41:19,005 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:41:19,005 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:41:19,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:41:19,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:41:19,231 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting serial_port_activateErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~X~C_INT~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~C_INT~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION (and 55 more)] === [2021-11-07 01:41:19,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:41:19,232 INFO L85 PathProgramCache]: Analyzing trace with hash 740692851, now seen corresponding path program 1 times [2021-11-07 01:41:19,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:41:19,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1888775103] [2021-11-07 01:41:19,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:41:19,253 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:41:19,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:41:19,256 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:41:19,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:41:50,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:41:50,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 3960 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:41:50,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:41:52,167 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:41:52,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:41:53,694 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:41:53,694 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:41:53,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1888775103] [2021-11-07 01:41:53,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1888775103] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:41:53,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [87441115] [2021-11-07 01:41:53,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:41:53,696 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:41:53,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:41:53,697 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:41:53,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-07 01:41:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:41:59,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 3960 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:41:59,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:41:59,727 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 01:41:59,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:42:00,174 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 01:42:00,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [87441115] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:42:00,175 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:42:00,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:42:00,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360535800] [2021-11-07 01:42:00,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:42:00,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:42:00,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:42:00,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:42:00,188 INFO L87 Difference]: Start difference. First operand 2967 states and 3907 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:42:01,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:42:01,842 INFO L93 Difference]: Finished difference Result 8667 states and 11516 transitions. [2021-11-07 01:42:01,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:42:01,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-07 01:42:01,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:42:01,914 INFO L225 Difference]: With dead ends: 8667 [2021-11-07 01:42:01,915 INFO L226 Difference]: Without dead ends: 5799 [2021-11-07 01:42:01,937 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 429 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:42:01,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5799 states. [2021-11-07 01:42:02,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5799 to 5647. [2021-11-07 01:42:02,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5647 states, 5341 states have (on average 1.3422580041190788) internal successors, (7169), 5411 states have internal predecessors, (7169), 185 states have call successors, (185), 64 states have call predecessors, (185), 64 states have return successors, (262), 175 states have call predecessors, (262), 185 states have call successors, (262) [2021-11-07 01:42:02,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5647 states to 5647 states and 7616 transitions. [2021-11-07 01:42:02,206 INFO L78 Accepts]: Start accepts. Automaton has 5647 states and 7616 transitions. Word has length 110 [2021-11-07 01:42:02,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:42:02,208 INFO L470 AbstractCegarLoop]: Abstraction has 5647 states and 7616 transitions. [2021-11-07 01:42:02,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:42:02,209 INFO L276 IsEmpty]: Start isEmpty. Operand 5647 states and 7616 transitions. [2021-11-07 01:42:02,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-07 01:42:02,219 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:42:02,220 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:42:02,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:42:02,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:42:02,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:42:02,637 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~X~C_INT~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~C_INT~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION (and 55 more)] === [2021-11-07 01:42:02,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:42:02,637 INFO L85 PathProgramCache]: Analyzing trace with hash 343257310, now seen corresponding path program 1 times [2021-11-07 01:42:02,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:42:02,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [142738337] [2021-11-07 01:42:02,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:42:02,648 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:42:02,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:42:02,649 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:42:02,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:42:28,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:42:29,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 3922 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:42:29,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:42:30,580 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:42:30,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:42:32,096 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:42:32,097 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:42:32,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [142738337] [2021-11-07 01:42:32,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [142738337] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:42:32,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1604149941] [2021-11-07 01:42:32,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:42:32,098 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:42:32,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:42:32,105 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:42:32,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-07 01:42:37,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:42:37,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 3922 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:42:37,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:42:38,074 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 01:42:38,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:42:38,432 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 01:42:38,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1604149941] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:42:38,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:42:38,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:42:38,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694183407] [2021-11-07 01:42:38,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:42:38,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:42:38,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:42:38,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:42:38,435 INFO L87 Difference]: Start difference. First operand 5647 states and 7616 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:42:45,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:42:45,743 INFO L93 Difference]: Finished difference Result 15414 states and 20776 transitions. [2021-11-07 01:42:45,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:42:45,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-11-07 01:42:45,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:42:45,832 INFO L225 Difference]: With dead ends: 15414 [2021-11-07 01:42:45,834 INFO L226 Difference]: Without dead ends: 9866 [2021-11-07 01:42:45,869 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:42:45,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9866 states. [2021-11-07 01:42:46,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9866 to 9703. [2021-11-07 01:42:46,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9703 states, 9216 states have (on average 1.3429904513888888) internal successors, (12377), 9299 states have internal predecessors, (12377), 312 states have call successors, (312), 118 states have call predecessors, (312), 118 states have return successors, (450), 292 states have call predecessors, (450), 312 states have call successors, (450) [2021-11-07 01:42:46,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9703 states to 9703 states and 13139 transitions. [2021-11-07 01:42:46,337 INFO L78 Accepts]: Start accepts. Automaton has 9703 states and 13139 transitions. Word has length 113 [2021-11-07 01:42:46,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:42:46,339 INFO L470 AbstractCegarLoop]: Abstraction has 9703 states and 13139 transitions. [2021-11-07 01:42:46,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:42:46,340 INFO L276 IsEmpty]: Start isEmpty. Operand 9703 states and 13139 transitions. [2021-11-07 01:42:46,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-07 01:42:46,342 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:42:46,342 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:42:46,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:42:46,638 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-07 01:42:46,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:42:46,756 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting usb_serial_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~X~C_INT~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~C_INT~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION (and 55 more)] === [2021-11-07 01:42:46,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:42:46,756 INFO L85 PathProgramCache]: Analyzing trace with hash 437718993, now seen corresponding path program 1 times [2021-11-07 01:42:46,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:42:46,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [291239118] [2021-11-07 01:42:46,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:42:46,764 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:42:46,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:42:46,767 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:42:46,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:43:13,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:43:14,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 4065 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:43:14,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:43:15,616 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:43:15,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:43:17,191 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:43:17,192 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:43:17,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [291239118] [2021-11-07 01:43:17,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [291239118] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:43:17,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [575119543] [2021-11-07 01:43:17,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:43:17,193 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:43:17,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:43:17,193 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:43:17,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-07 01:43:22,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:43:22,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 4065 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:43:22,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:43:23,595 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 01:43:23,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:43:24,087 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 01:43:24,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [575119543] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:43:24,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:43:24,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:43:24,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597144828] [2021-11-07 01:43:24,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:43:24,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:43:24,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:43:24,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:43:24,089 INFO L87 Difference]: Start difference. First operand 9703 states and 13139 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:43:25,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:43:25,686 INFO L93 Difference]: Finished difference Result 27906 states and 38024 transitions. [2021-11-07 01:43:25,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:43:25,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-11-07 01:43:25,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:43:25,818 INFO L225 Difference]: With dead ends: 27906 [2021-11-07 01:43:25,818 INFO L226 Difference]: Without dead ends: 18302 [2021-11-07 01:43:25,863 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 461 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:43:25,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18302 states. [2021-11-07 01:43:26,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18302 to 18070. [2021-11-07 01:43:26,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18070 states, 17197 states have (on average 1.3463394778158981) internal successors, (23153), 17299 states have internal predecessors, (23153), 588 states have call successors, (588), 224 states have call predecessors, (588), 228 states have return successors, (1048), 560 states have call predecessors, (1048), 588 states have call successors, (1048) [2021-11-07 01:43:26,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18070 states to 18070 states and 24789 transitions. [2021-11-07 01:43:26,561 INFO L78 Accepts]: Start accepts. Automaton has 18070 states and 24789 transitions. Word has length 118 [2021-11-07 01:43:26,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:43:26,562 INFO L470 AbstractCegarLoop]: Abstraction has 18070 states and 24789 transitions. [2021-11-07 01:43:26,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:43:26,562 INFO L276 IsEmpty]: Start isEmpty. Operand 18070 states and 24789 transitions. [2021-11-07 01:43:26,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-07 01:43:26,564 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:43:26,564 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:43:26,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:43:26,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:43:26,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:43:26,984 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~X~C_INT~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~C_INT~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION (and 55 more)] === [2021-11-07 01:43:26,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:43:26,984 INFO L85 PathProgramCache]: Analyzing trace with hash 773655719, now seen corresponding path program 1 times [2021-11-07 01:43:26,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:43:26,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2086954295] [2021-11-07 01:43:26,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:43:26,998 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:43:26,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:43:26,999 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:43:27,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:43:53,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:43:53,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 3928 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:43:53,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:43:55,355 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:43:55,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:43:56,805 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:43:56,806 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:43:56,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2086954295] [2021-11-07 01:43:56,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2086954295] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:43:56,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1408787484] [2021-11-07 01:43:56,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:43:56,807 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:43:56,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:43:56,809 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:43:56,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-07 01:44:02,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:44:02,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 3928 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:44:02,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:44:04,851 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 01:44:04,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:44:07,237 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 01:44:07,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1408787484] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:44:07,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:44:07,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 01:44:07,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287999325] [2021-11-07 01:44:07,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:44:07,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:44:07,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:44:07,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:44:07,239 INFO L87 Difference]: Start difference. First operand 18070 states and 24789 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:44:08,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:44:08,178 INFO L93 Difference]: Finished difference Result 18070 states and 24789 transitions. [2021-11-07 01:44:08,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:44:08,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-11-07 01:44:08,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:44:08,280 INFO L225 Difference]: With dead ends: 18070 [2021-11-07 01:44:08,280 INFO L226 Difference]: Without dead ends: 18045 [2021-11-07 01:44:08,293 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 461 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:44:08,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18045 states. [2021-11-07 01:44:09,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18045 to 18045. [2021-11-07 01:44:09,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18045 states, 17184 states have (on average 1.3431098696461825) internal successors, (23080), 17274 states have internal predecessors, (23080), 588 states have call successors, (588), 224 states have call predecessors, (588), 228 states have return successors, (1048), 560 states have call predecessors, (1048), 588 states have call successors, (1048) [2021-11-07 01:44:09,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18045 states to 18045 states and 24716 transitions. [2021-11-07 01:44:09,143 INFO L78 Accepts]: Start accepts. Automaton has 18045 states and 24716 transitions. Word has length 118 [2021-11-07 01:44:09,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:44:09,144 INFO L470 AbstractCegarLoop]: Abstraction has 18045 states and 24716 transitions. [2021-11-07 01:44:09,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:44:09,144 INFO L276 IsEmpty]: Start isEmpty. Operand 18045 states and 24716 transitions. [2021-11-07 01:44:09,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-07 01:44:09,147 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:44:09,148 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:44:09,236 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-07 01:44:09,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:44:09,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:44:09,571 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~X~C_INT~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~C_INT~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION (and 55 more)] === [2021-11-07 01:44:09,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:44:09,572 INFO L85 PathProgramCache]: Analyzing trace with hash 2080962834, now seen corresponding path program 1 times [2021-11-07 01:44:09,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:44:09,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1422958184] [2021-11-07 01:44:09,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:44:09,580 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:44:09,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:44:09,580 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:44:09,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:44:35,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:44:35,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 3946 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:44:35,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:44:37,340 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:44:37,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:44:38,810 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:44:38,810 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:44:38,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1422958184] [2021-11-07 01:44:38,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1422958184] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:44:38,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1238827545] [2021-11-07 01:44:38,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:44:38,810 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:44:38,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:44:38,811 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:44:38,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-07 01:44:44,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:44:44,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 3946 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:44:44,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:44:44,987 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 01:44:44,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:44:45,247 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 01:44:45,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1238827545] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:44:45,248 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:44:45,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:44:45,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691770725] [2021-11-07 01:44:45,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:44:45,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:44:45,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:44:45,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:44:45,249 INFO L87 Difference]: Start difference. First operand 18045 states and 24716 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:44:48,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:44:48,642 INFO L93 Difference]: Finished difference Result 18045 states and 24716 transitions. [2021-11-07 01:44:48,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:44:48,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2021-11-07 01:44:48,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:44:48,725 INFO L225 Difference]: With dead ends: 18045 [2021-11-07 01:44:48,725 INFO L226 Difference]: Without dead ends: 18017 [2021-11-07 01:44:48,738 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 481 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:44:48,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18017 states. [2021-11-07 01:44:49,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18017 to 18017. [2021-11-07 01:44:49,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18017 states, 17170 states have (on average 1.3386721025043682) internal successors, (22985), 17246 states have internal predecessors, (22985), 588 states have call successors, (588), 224 states have call predecessors, (588), 228 states have return successors, (1048), 560 states have call predecessors, (1048), 588 states have call successors, (1048) [2021-11-07 01:44:49,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18017 states to 18017 states and 24621 transitions. [2021-11-07 01:44:49,570 INFO L78 Accepts]: Start accepts. Automaton has 18017 states and 24621 transitions. Word has length 123 [2021-11-07 01:44:49,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:44:49,570 INFO L470 AbstractCegarLoop]: Abstraction has 18017 states and 24621 transitions. [2021-11-07 01:44:49,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:44:49,571 INFO L276 IsEmpty]: Start isEmpty. Operand 18017 states and 24621 transitions. [2021-11-07 01:44:49,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-07 01:44:49,573 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:44:49,573 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:44:49,668 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-07 01:44:49,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:44:49,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:44:50,000 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~X~C_INT~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~C_INT~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION (and 55 more)] === [2021-11-07 01:44:50,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:44:50,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1283414992, now seen corresponding path program 1 times [2021-11-07 01:44:50,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:44:50,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1533908419] [2021-11-07 01:44:50,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:44:50,008 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:44:50,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:44:50,008 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:44:50,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:45:15,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:45:16,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 3950 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:45:16,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:45:17,754 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:45:17,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:45:19,371 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:45:19,371 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:45:19,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1533908419] [2021-11-07 01:45:19,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1533908419] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:45:19,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1437111796] [2021-11-07 01:45:19,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:45:19,372 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:45:19,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:45:19,373 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:45:19,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-07 01:45:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:45:25,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 3950 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:45:25,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:45:27,921 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 01:45:27,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:45:30,503 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 01:45:30,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1437111796] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:45:30,503 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:45:30,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 01:45:30,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876979546] [2021-11-07 01:45:30,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:45:30,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:45:30,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:45:30,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:45:30,505 INFO L87 Difference]: Start difference. First operand 18017 states and 24621 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:45:32,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:45:32,125 INFO L93 Difference]: Finished difference Result 51507 states and 71451 transitions. [2021-11-07 01:45:32,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:45:32,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-07 01:45:32,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:45:32,293 INFO L225 Difference]: With dead ends: 51507 [2021-11-07 01:45:32,293 INFO L226 Difference]: Without dead ends: 33589 [2021-11-07 01:45:32,637 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 489 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:45:32,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33589 states. [2021-11-07 01:45:34,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33589 to 33500. [2021-11-07 01:45:34,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33500 states, 31904 states have (on average 1.3383901705115346) internal successors, (42700), 32053 states have internal predecessors, (42700), 1125 states have call successors, (1125), 445 states have call predecessors, (1125), 440 states have return successors, (2592), 1029 states have call predecessors, (2592), 1125 states have call successors, (2592) [2021-11-07 01:45:34,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33500 states to 33500 states and 46417 transitions. [2021-11-07 01:45:34,312 INFO L78 Accepts]: Start accepts. Automaton has 33500 states and 46417 transitions. Word has length 125 [2021-11-07 01:45:34,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:45:34,313 INFO L470 AbstractCegarLoop]: Abstraction has 33500 states and 46417 transitions. [2021-11-07 01:45:34,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:45:34,313 INFO L276 IsEmpty]: Start isEmpty. Operand 33500 states and 46417 transitions. [2021-11-07 01:45:34,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-07 01:45:34,316 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:45:34,316 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:45:34,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:45:34,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:45:34,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:45:34,743 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~X~C_INT~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~C_INT~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION (and 55 more)] === [2021-11-07 01:45:34,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:45:34,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1131145441, now seen corresponding path program 1 times [2021-11-07 01:45:34,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:45:34,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [442332338] [2021-11-07 01:45:34,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:45:34,756 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:45:34,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:45:34,757 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:45:34,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 01:46:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:46:01,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 3951 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:46:01,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:46:03,197 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:46:03,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:46:04,697 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:46:04,697 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:46:04,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [442332338] [2021-11-07 01:46:04,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [442332338] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:46:04,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1544259123] [2021-11-07 01:46:04,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:46:04,697 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:46:04,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:46:04,698 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:46:04,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-07 01:46:10,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:46:10,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 3951 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:46:10,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:46:13,291 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 01:46:13,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:46:15,883 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 01:46:15,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1544259123] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:46:15,884 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:46:15,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 01:46:15,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396309165] [2021-11-07 01:46:15,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:46:15,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:46:15,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:46:15,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:46:15,886 INFO L87 Difference]: Start difference. First operand 33500 states and 46417 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:46:16,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:46:16,681 INFO L93 Difference]: Finished difference Result 33500 states and 46417 transitions. [2021-11-07 01:46:16,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:46:16,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2021-11-07 01:46:16,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:46:16,825 INFO L225 Difference]: With dead ends: 33500 [2021-11-07 01:46:16,825 INFO L226 Difference]: Without dead ends: 33498 [2021-11-07 01:46:16,844 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 493 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:46:16,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33498 states. [2021-11-07 01:46:18,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33498 to 33498. [2021-11-07 01:46:18,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33498 states, 31903 states have (on average 1.338369432341786) internal successors, (42698), 32051 states have internal predecessors, (42698), 1125 states have call successors, (1125), 445 states have call predecessors, (1125), 440 states have return successors, (2592), 1029 states have call predecessors, (2592), 1125 states have call successors, (2592) [2021-11-07 01:46:18,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33498 states to 33498 states and 46415 transitions. [2021-11-07 01:46:18,564 INFO L78 Accepts]: Start accepts. Automaton has 33498 states and 46415 transitions. Word has length 126 [2021-11-07 01:46:18,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:46:18,564 INFO L470 AbstractCegarLoop]: Abstraction has 33498 states and 46415 transitions. [2021-11-07 01:46:18,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:46:18,565 INFO L276 IsEmpty]: Start isEmpty. Operand 33498 states and 46415 transitions. [2021-11-07 01:46:18,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-07 01:46:18,567 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:46:18,567 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:46:18,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:46:18,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-07 01:46:18,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:46:18,991 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~X~C_INT~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~C_INT~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION (and 55 more)] === [2021-11-07 01:46:18,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:46:18,992 INFO L85 PathProgramCache]: Analyzing trace with hash -705756646, now seen corresponding path program 1 times [2021-11-07 01:46:18,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:46:19,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1963267192] [2021-11-07 01:46:19,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:46:19,000 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:46:19,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:46:19,001 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:46:19,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 01:46:45,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:46:46,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 3952 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:46:46,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:46:47,574 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:46:47,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:46:49,135 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:46:49,135 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:46:49,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1963267192] [2021-11-07 01:46:49,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1963267192] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:46:49,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1553740926] [2021-11-07 01:46:49,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:46:49,136 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:46:49,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:46:49,137 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:46:49,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-07 01:46:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:46:55,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 3952 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:46:55,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:46:57,952 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 01:46:57,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:47:00,600 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 01:47:00,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1553740926] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:47:00,600 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:47:00,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 01:47:00,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470329223] [2021-11-07 01:47:00,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:47:00,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:47:00,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:47:00,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:47:00,603 INFO L87 Difference]: Start difference. First operand 33498 states and 46415 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:47:01,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:47:01,529 INFO L93 Difference]: Finished difference Result 33498 states and 46415 transitions. [2021-11-07 01:47:01,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:47:01,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2021-11-07 01:47:01,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:47:01,660 INFO L225 Difference]: With dead ends: 33498 [2021-11-07 01:47:01,660 INFO L226 Difference]: Without dead ends: 33496 [2021-11-07 01:47:01,676 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 497 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:47:01,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33496 states. [2021-11-07 01:47:03,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33496 to 33496. [2021-11-07 01:47:03,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33496 states, 31902 states have (on average 1.3383486928719202) internal successors, (42696), 32049 states have internal predecessors, (42696), 1125 states have call successors, (1125), 445 states have call predecessors, (1125), 440 states have return successors, (2592), 1029 states have call predecessors, (2592), 1125 states have call successors, (2592) [2021-11-07 01:47:03,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33496 states to 33496 states and 46413 transitions. [2021-11-07 01:47:03,158 INFO L78 Accepts]: Start accepts. Automaton has 33496 states and 46413 transitions. Word has length 127 [2021-11-07 01:47:03,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:47:03,158 INFO L470 AbstractCegarLoop]: Abstraction has 33496 states and 46413 transitions. [2021-11-07 01:47:03,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:47:03,159 INFO L276 IsEmpty]: Start isEmpty. Operand 33496 states and 46413 transitions. [2021-11-07 01:47:03,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-07 01:47:03,161 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:47:03,162 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:47:03,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2021-11-07 01:47:03,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-07 01:47:03,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:47:03,587 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~X~C_INT~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~C_INT~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION (and 55 more)] === [2021-11-07 01:47:03,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:47:03,588 INFO L85 PathProgramCache]: Analyzing trace with hash -403605879, now seen corresponding path program 1 times [2021-11-07 01:47:03,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:47:03,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [43552330] [2021-11-07 01:47:03,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:47:03,701 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:47:03,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:47:03,702 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:47:03,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-07 01:47:30,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:47:30,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 3953 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:47:30,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:47:31,978 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:47:31,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:47:33,671 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:47:33,671 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:47:33,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [43552330] [2021-11-07 01:47:33,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [43552330] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:47:33,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [626951433] [2021-11-07 01:47:33,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:47:33,672 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:47:33,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:47:33,673 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:47:33,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-07 01:47:39,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:47:39,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 3953 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:47:39,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:47:42,540 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 01:47:42,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:47:45,116 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 01:47:45,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [626951433] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:47:45,117 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:47:45,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 01:47:45,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737177912] [2021-11-07 01:47:45,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:47:45,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:47:45,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:47:45,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:47:45,119 INFO L87 Difference]: Start difference. First operand 33496 states and 46413 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:47:46,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:47:46,171 INFO L93 Difference]: Finished difference Result 33496 states and 46413 transitions. [2021-11-07 01:47:46,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:47:46,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-11-07 01:47:46,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:47:46,259 INFO L225 Difference]: With dead ends: 33496 [2021-11-07 01:47:46,260 INFO L226 Difference]: Without dead ends: 33462 [2021-11-07 01:47:46,270 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 501 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:47:46,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33462 states. [2021-11-07 01:47:47,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33462 to 33462. [2021-11-07 01:47:47,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33462 states, 31869 states have (on average 1.338102858577301) internal successors, (42644), 32015 states have internal predecessors, (42644), 1125 states have call successors, (1125), 445 states have call predecessors, (1125), 440 states have return successors, (2592), 1029 states have call predecessors, (2592), 1125 states have call successors, (2592) [2021-11-07 01:47:47,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33462 states to 33462 states and 46361 transitions. [2021-11-07 01:47:47,863 INFO L78 Accepts]: Start accepts. Automaton has 33462 states and 46361 transitions. Word has length 128 [2021-11-07 01:47:47,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:47:47,863 INFO L470 AbstractCegarLoop]: Abstraction has 33462 states and 46361 transitions. [2021-11-07 01:47:47,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:47:47,864 INFO L276 IsEmpty]: Start isEmpty. Operand 33462 states and 46361 transitions. [2021-11-07 01:47:47,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-07 01:47:47,872 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:47:47,873 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:47:47,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-07 01:47:48,116 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2021-11-07 01:47:48,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:47:48,288 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting serial_port_activateErr1ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~X~C_INT~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~C_INT~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION (and 55 more)] === [2021-11-07 01:47:48,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:47:48,288 INFO L85 PathProgramCache]: Analyzing trace with hash 39900241, now seen corresponding path program 1 times [2021-11-07 01:47:48,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:47:48,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1607363621] [2021-11-07 01:47:48,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:47:48,296 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:47:48,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:47:48,297 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:47:48,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-07 01:48:15,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:48:15,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 4168 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:48:15,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:48:17,315 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-07 01:48:17,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:48:18,962 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-07 01:48:18,962 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:48:18,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1607363621] [2021-11-07 01:48:18,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1607363621] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:48:18,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [261909396] [2021-11-07 01:48:18,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:48:18,963 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:48:18,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:48:18,973 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:48:18,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-07 01:48:25,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:48:25,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 4168 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:48:25,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:48:26,656 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 01:48:26,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:48:27,332 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 01:48:27,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [261909396] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:48:27,332 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:48:27,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:48:27,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688580165] [2021-11-07 01:48:27,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:48:27,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:48:27,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:48:27,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:48:27,335 INFO L87 Difference]: Start difference. First operand 33462 states and 46361 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 01:48:30,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:48:30,726 INFO L93 Difference]: Finished difference Result 99508 states and 137917 transitions. [2021-11-07 01:48:30,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:48:30,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 157 [2021-11-07 01:48:30,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:48:30,924 INFO L225 Difference]: With dead ends: 99508 [2021-11-07 01:48:30,924 INFO L226 Difference]: Without dead ends: 66145 [2021-11-07 01:48:31,081 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 624 GetRequests, 617 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:48:31,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66145 states. [2021-11-07 01:48:33,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66145 to 66046. [2021-11-07 01:48:33,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66046 states, 62920 states have (on average 1.3388429752066116) internal successors, (84240), 63190 states have internal predecessors, (84240), 2218 states have call successors, (2218), 890 states have call predecessors, (2218), 880 states have return successors, (5120), 2021 states have call predecessors, (5120), 2218 states have call successors, (5120) [2021-11-07 01:48:34,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66046 states to 66046 states and 91578 transitions. [2021-11-07 01:48:34,281 INFO L78 Accepts]: Start accepts. Automaton has 66046 states and 91578 transitions. Word has length 157 [2021-11-07 01:48:34,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:48:34,281 INFO L470 AbstractCegarLoop]: Abstraction has 66046 states and 91578 transitions. [2021-11-07 01:48:34,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 01:48:34,281 INFO L276 IsEmpty]: Start isEmpty. Operand 66046 states and 91578 transitions. [2021-11-07 01:48:34,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-07 01:48:34,284 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:48:34,285 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:48:34,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-07 01:48:34,515 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2021-11-07 01:48:34,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:48:34,689 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting usb_serial_disconnectErr1ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~X~C_INT~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~C_INT~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION (and 55 more)] === [2021-11-07 01:48:34,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:48:34,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1190098372, now seen corresponding path program 1 times [2021-11-07 01:48:34,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:48:34,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1158234537] [2021-11-07 01:48:34,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:48:34,697 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:48:34,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:48:34,697 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:48:34,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-07 01:49:02,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:49:02,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 4237 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:49:02,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:49:04,770 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-07 01:49:04,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:49:06,817 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-07 01:49:06,817 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:49:06,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1158234537] [2021-11-07 01:49:06,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1158234537] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:49:06,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1492678905] [2021-11-07 01:49:06,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:49:06,818 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:49:06,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:49:06,819 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:49:06,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-11-07 01:49:13,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:49:13,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 4237 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:49:13,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:49:14,668 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 01:49:14,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:49:15,208 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 01:49:15,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1492678905] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:49:15,208 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:49:15,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:49:15,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656807574] [2021-11-07 01:49:15,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:49:15,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:49:15,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:49:15,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:49:15,210 INFO L87 Difference]: Start difference. First operand 66046 states and 91578 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:49:19,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:49:19,141 INFO L93 Difference]: Finished difference Result 131996 states and 183047 transitions. [2021-11-07 01:49:19,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:49:19,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-11-07 01:49:19,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:49:19,430 INFO L225 Difference]: With dead ends: 131996 [2021-11-07 01:49:19,430 INFO L226 Difference]: Without dead ends: 66049 [2021-11-07 01:49:19,870 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 676 GetRequests, 669 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:49:19,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66049 states. [2021-11-07 01:49:22,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66049 to 63766. [2021-11-07 01:49:22,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63766 states, 60640 states have (on average 1.3413588390501319) internal successors, (81340), 60910 states have internal predecessors, (81340), 2218 states have call successors, (2218), 890 states have call predecessors, (2218), 880 states have return successors, (5120), 2021 states have call predecessors, (5120), 2218 states have call successors, (5120) [2021-11-07 01:49:23,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63766 states to 63766 states and 88678 transitions. [2021-11-07 01:49:23,152 INFO L78 Accepts]: Start accepts. Automaton has 63766 states and 88678 transitions. Word has length 170 [2021-11-07 01:49:23,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:49:23,153 INFO L470 AbstractCegarLoop]: Abstraction has 63766 states and 88678 transitions. [2021-11-07 01:49:23,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:49:23,153 INFO L276 IsEmpty]: Start isEmpty. Operand 63766 states and 88678 transitions. [2021-11-07 01:49:23,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-07 01:49:23,161 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:49:23,162 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:49:23,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2021-11-07 01:49:23,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-07 01:49:23,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:49:23,587 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting serial_cleanupErr1ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~X~C_INT~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~C_INT~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION (and 55 more)] === [2021-11-07 01:49:23,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:49:23,588 INFO L85 PathProgramCache]: Analyzing trace with hash -479333689, now seen corresponding path program 1 times [2021-11-07 01:49:23,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:49:23,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1101464638] [2021-11-07 01:49:23,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:49:23,596 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:49:23,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:49:23,597 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:49:23,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef80b2d0-bffb-4c32-9dbe-3d6ab92c6409/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process