./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-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH --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 3ecfb8b0fcef33da98f558e52c103bea043ca8b7f1be39029ddcf57b060bd03a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:54:17,824 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:54:17,826 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:54:17,882 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:54:17,882 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:54:17,884 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:54:17,885 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:54:17,888 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:54:17,890 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:54:17,891 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:54:17,892 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:54:17,894 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:54:17,894 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:54:17,896 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:54:17,897 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:54:17,899 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:54:17,900 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:54:17,901 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:54:17,903 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:54:17,906 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:54:17,908 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:54:17,911 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:54:17,913 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:54:17,914 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:54:17,918 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:54:17,919 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:54:17,919 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:54:17,920 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:54:17,921 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:54:17,922 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:54:17,922 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:54:17,923 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:54:17,924 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:54:17,929 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:54:17,933 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:54:17,934 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:54:17,934 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:54:17,935 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:54:17,935 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:54:17,936 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:54:17,937 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:54:17,938 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-03 03:54:17,987 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:54:17,988 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:54:17,988 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:54:17,989 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:54:17,989 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:54:17,989 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:54:17,989 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 03:54:17,989 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:54:17,990 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:54:17,990 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 03:54:17,990 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 03:54:17,990 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:54:17,991 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 03:54:17,991 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 03:54:17,991 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 03:54:17,992 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:54:17,992 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:54:17,992 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:54:17,992 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:54:17,993 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:54:17,993 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:54:17,993 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:54:17,993 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:54:17,993 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:54:17,994 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:54:17,996 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:54:17,997 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:54:17,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:54:17,998 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:54:17,999 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:54:17,999 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:54:17,999 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 03:54:18,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 03:54:18,000 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:54:18,000 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:54:18,000 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:54:18,001 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_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ecfb8b0fcef33da98f558e52c103bea043ca8b7f1be39029ddcf57b060bd03a [2021-11-03 03:54:18,272 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:54:18,307 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:54:18,309 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:54:18,311 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:54:18,312 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:54:18,313 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i [2021-11-03 03:54:18,402 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/data/53f1ccb92/a1e8cc1e30054d01b0f62b2d14abc321/FLAG46ceda2e5 [2021-11-03 03:54:19,240 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:54:19,241 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i [2021-11-03 03:54:19,294 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/data/53f1ccb92/a1e8cc1e30054d01b0f62b2d14abc321/FLAG46ceda2e5 [2021-11-03 03:54:19,716 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/data/53f1ccb92/a1e8cc1e30054d01b0f62b2d14abc321 [2021-11-03 03:54:19,719 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:54:19,720 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:54:19,722 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:54:19,722 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:54:19,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:54:19,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:54:19" (1/1) ... [2021-11-03 03:54:19,727 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@405e29cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:19, skipping insertion in model container [2021-11-03 03:54:19,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:54:19" (1/1) ... [2021-11-03 03:54:19,735 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:54:19,848 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:54:21,757 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 03:54:21,760 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 03:54:21,976 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_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i[290722,290735] [2021-11-03 03:54:22,039 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:54:22,111 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) [2021-11-03 03:54:22,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@bf35923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:22, skipping insertion in model container [2021-11-03 03:54:22,112 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:54:22,112 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 03:54:22,115 INFO L168 Benchmark]: Toolchain (without parser) took 2393.05 ms. Allocated memory was 94.4 MB in the beginning and 125.8 MB in the end (delta: 31.5 MB). Free memory was 66.1 MB in the beginning and 68.6 MB in the end (delta: -2.6 MB). Peak memory consumption was 53.2 MB. Max. memory is 16.1 GB. [2021-11-03 03:54:22,116 INFO L168 Benchmark]: CDTParser took 0.59 ms. Allocated memory is still 94.4 MB. Free memory is still 48.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:54:22,117 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2390.74 ms. Allocated memory was 94.4 MB in the beginning and 125.8 MB in the end (delta: 31.5 MB). Free memory was 65.7 MB in the beginning and 68.6 MB in the end (delta: -2.9 MB). Peak memory consumption was 53.2 MB. Max. memory is 16.1 GB. [2021-11-03 03:54:22,119 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.59 ms. Allocated memory is still 94.4 MB. Free memory is still 48.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2390.74 ms. Allocated memory was 94.4 MB in the beginning and 125.8 MB in the end (delta: 31.5 MB). Free memory was 65.7 MB in the beginning and 68.6 MB in the end (delta: -2.9 MB). Peak memory consumption was 53.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6576]: 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_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH --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 3ecfb8b0fcef33da98f558e52c103bea043ca8b7f1be39029ddcf57b060bd03a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:54:24,280 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:54:24,285 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:54:24,335 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:54:24,336 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:54:24,340 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:54:24,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:54:24,345 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:54:24,348 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:54:24,355 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:54:24,357 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:54:24,359 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:54:24,359 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:54:24,362 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:54:24,364 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:54:24,369 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:54:24,371 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:54:24,372 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:54:24,375 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:54:24,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:54:24,385 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:54:24,387 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:54:24,389 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:54:24,391 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:54:24,400 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:54:24,400 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:54:24,400 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:54:24,402 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:54:24,403 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:54:24,404 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:54:24,405 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:54:24,406 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:54:24,408 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:54:24,408 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:54:24,410 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:54:24,410 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:54:24,411 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:54:24,411 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:54:24,411 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:54:24,413 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:54:24,414 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:54:24,415 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-03 03:54:24,464 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:54:24,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:54:24,465 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:54:24,465 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:54:24,466 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:54:24,466 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:54:24,466 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:54:24,466 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:54:24,466 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:54:24,468 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:54:24,469 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:54:24,469 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:54:24,469 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:54:24,469 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:54:24,470 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:54:24,470 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 03:54:24,470 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 03:54:24,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:54:24,470 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:54:24,471 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:54:24,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:54:24,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 03:54:24,471 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:54:24,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:54:24,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:54:24,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:54:24,472 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:54:24,472 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 03:54:24,473 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 03:54:24,473 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:54:24,473 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:54:24,473 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:54:24,474 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_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ecfb8b0fcef33da98f558e52c103bea043ca8b7f1be39029ddcf57b060bd03a [2021-11-03 03:54:24,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:54:24,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:54:24,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:54:24,850 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:54:24,851 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:54:24,852 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i [2021-11-03 03:54:24,920 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/data/16df42b52/9e71137bc24243d3824b9ba9a8fa2e80/FLAG4b4fc8e3c [2021-11-03 03:54:25,900 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:54:25,902 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i [2021-11-03 03:54:25,976 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/data/16df42b52/9e71137bc24243d3824b9ba9a8fa2e80/FLAG4b4fc8e3c [2021-11-03 03:54:26,280 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/data/16df42b52/9e71137bc24243d3824b9ba9a8fa2e80 [2021-11-03 03:54:26,283 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:54:26,286 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:54:26,288 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:54:26,289 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:54:26,292 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:54:26,293 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:54:26" (1/1) ... [2021-11-03 03:54:26,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f0519fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:26, skipping insertion in model container [2021-11-03 03:54:26,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:54:26" (1/1) ... [2021-11-03 03:54:26,301 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:54:26,476 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:54:28,407 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_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i[290722,290735] [2021-11-03 03:54:28,499 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:54:28,556 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 03:54:28,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:54:29,046 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_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i[290722,290735] [2021-11-03 03:54:29,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:54:29,105 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:54:29,481 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_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i[290722,290735] [2021-11-03 03:54:29,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:54:29,876 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:54:29,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:29 WrapperNode [2021-11-03 03:54:29,877 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:54:29,877 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:54:29,878 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:54:29,878 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:54:29,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:29" (1/1) ... [2021-11-03 03:54:30,003 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:29" (1/1) ... [2021-11-03 03:54:30,579 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:54:30,580 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:54:30,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:54:30,581 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:54:30,588 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:29" (1/1) ... [2021-11-03 03:54:30,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:29" (1/1) ... [2021-11-03 03:54:30,711 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:29" (1/1) ... [2021-11-03 03:54:30,712 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:29" (1/1) ... [2021-11-03 03:54:31,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:29" (1/1) ... [2021-11-03 03:54:31,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:29" (1/1) ... [2021-11-03 03:54:31,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:29" (1/1) ... [2021-11-03 03:54:31,279 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:54:31,281 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:54:31,281 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:54:31,281 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:54:31,285 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:29" (1/1) ... [2021-11-03 03:54:31,292 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:54:31,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:54:31,314 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:54:31,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:54:31,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 03:54:31,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-03 03:54:31,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 03:54:31,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-03 03:54:31,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:54:31,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 03:54:31,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-03 03:54:31,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-03 03:54:31,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-03 03:54:31,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 03:54:31,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 03:54:31,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 03:54:31,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-03 03:54:31,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 03:54:31,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-03 03:54:31,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-03 03:54:31,357 INFO L130 BoogieDeclarations]: Found specification of procedure check_sig [2021-11-03 03:54:31,357 INFO L138 BoogieDeclarations]: Found implementation of procedure check_sig [2021-11-03 03:54:31,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 03:54:31,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 03:54:31,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:54:31,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:56:02,501 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:56:02,502 INFO L299 CfgBuilder]: Removed 4263 assume(true) statements. [2021-11-03 03:56:02,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:56:02 BoogieIcfgContainer [2021-11-03 03:56:02,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:56:02,510 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:56:02,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:56:02,513 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:56:02,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:54:26" (1/3) ... [2021-11-03 03:56:02,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb12092 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:56:02, skipping insertion in model container [2021-11-03 03:56:02,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:29" (2/3) ... [2021-11-03 03:56:02,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb12092 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:56:02, skipping insertion in model container [2021-11-03 03:56:02,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:56:02" (3/3) ... [2021-11-03 03:56:02,516 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i [2021-11-03 03:56:02,521 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:56:02,521 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-03 03:56:02,581 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:56:02,586 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 [2021-11-03 03:56:02,586 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-03 03:56:02,654 INFO L276 IsEmpty]: Start isEmpty. Operand has 3554 states, 3545 states have (on average 1.307475317348378) internal successors, (4635), 3549 states have internal predecessors, (4635), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-03 03:56:02,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-03 03:56:02,687 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:56:02,688 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, 1, 1, 1] [2021-11-03 03:56:02,689 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-03 03:56:02,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:56:02,694 INFO L85 PathProgramCache]: Analyzing trace with hash 119318621, now seen corresponding path program 1 times [2021-11-03 03:56:02,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:56:02,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [103382247] [2021-11-03 03:56:02,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:56:02,720 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:56:02,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:56:02,726 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:56:02,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 03:56:08,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:56:08,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 2986 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 03:56:08,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:56:09,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:56:09,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:56:09,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:56:09,886 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:56:09,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [103382247] [2021-11-03 03:56:09,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [103382247] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:56:09,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:56:09,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 03:56:09,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041716103] [2021-11-03 03:56:09,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 03:56:09,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:56:09,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 03:56:09,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 03:56:09,917 INFO L87 Difference]: Start difference. First operand has 3554 states, 3545 states have (on average 1.307475317348378) internal successors, (4635), 3549 states have internal predecessors, (4635), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 49.0) internal successors, (98), 2 states have internal predecessors, (98), 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) [2021-11-03 03:56:10,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:56:10,090 INFO L93 Difference]: Finished difference Result 7104 states and 9277 transitions. [2021-11-03 03:56:10,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 03:56:10,092 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 49.0) internal successors, (98), 2 states have internal predecessors, (98), 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 98 [2021-11-03 03:56:10,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:56:10,130 INFO L225 Difference]: With dead ends: 7104 [2021-11-03 03:56:10,130 INFO L226 Difference]: Without dead ends: 3527 [2021-11-03 03:56:10,145 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 03:56:10,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3527 states. [2021-11-03 03:56:10,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3527 to 3527. [2021-11-03 03:56:10,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3527 states, 3519 states have (on average 1.2972435350951974) internal successors, (4565), 3522 states have internal predecessors, (4565), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-03 03:56:10,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3527 states to 3527 states and 4571 transitions. [2021-11-03 03:56:10,335 INFO L78 Accepts]: Start accepts. Automaton has 3527 states and 4571 transitions. Word has length 98 [2021-11-03 03:56:10,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:56:10,335 INFO L470 AbstractCegarLoop]: Abstraction has 3527 states and 4571 transitions. [2021-11-03 03:56:10,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 49.0) internal successors, (98), 2 states have internal predecessors, (98), 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) [2021-11-03 03:56:10,336 INFO L276 IsEmpty]: Start isEmpty. Operand 3527 states and 4571 transitions. [2021-11-03 03:56:10,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-03 03:56:10,346 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:56:10,347 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, 1, 1, 1] [2021-11-03 03:56:10,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 03:56:10,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:56:10,565 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-03 03:56:10,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:56:10,566 INFO L85 PathProgramCache]: Analyzing trace with hash 508941543, now seen corresponding path program 1 times [2021-11-03 03:56:10,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:56:10,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [221695642] [2021-11-03 03:56:10,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:56:10,571 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:56:10,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:56:10,572 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:56:10,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 03:56:16,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:56:16,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 2986 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:56:16,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:56:17,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:56:17,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:56:17,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:56:17,762 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:56:17,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [221695642] [2021-11-03 03:56:17,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [221695642] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:56:17,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:56:17,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 03:56:17,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235457489] [2021-11-03 03:56:17,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:56:17,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:56:17,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:56:17,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:56:17,773 INFO L87 Difference]: Start difference. First operand 3527 states and 4571 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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) [2021-11-03 03:56:18,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:56:18,609 INFO L93 Difference]: Finished difference Result 7045 states and 9147 transitions. [2021-11-03 03:56:18,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:56:18,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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 98 [2021-11-03 03:56:18,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:56:18,632 INFO L225 Difference]: With dead ends: 7045 [2021-11-03 03:56:18,632 INFO L226 Difference]: Without dead ends: 3542 [2021-11-03 03:56:18,639 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:56:18,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3542 states. [2021-11-03 03:56:18,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3542 to 3542. [2021-11-03 03:56:18,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3542 states, 3534 states have (on average 1.2959818902093945) internal successors, (4580), 3537 states have internal predecessors, (4580), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-03 03:56:18,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3542 states to 3542 states and 4586 transitions. [2021-11-03 03:56:18,758 INFO L78 Accepts]: Start accepts. Automaton has 3542 states and 4586 transitions. Word has length 98 [2021-11-03 03:56:18,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:56:18,758 INFO L470 AbstractCegarLoop]: Abstraction has 3542 states and 4586 transitions. [2021-11-03 03:56:18,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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) [2021-11-03 03:56:18,759 INFO L276 IsEmpty]: Start isEmpty. Operand 3542 states and 4586 transitions. [2021-11-03 03:56:18,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-03 03:56:18,768 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:56:18,769 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-03 03:56:18,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 03:56:18,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:56:18,982 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-03 03:56:18,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:56:18,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1561999385, now seen corresponding path program 1 times [2021-11-03 03:56:18,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:56:18,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2090168298] [2021-11-03 03:56:18,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:56:18,988 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:56:18,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:56:18,989 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:56:18,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 03:56:24,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:56:24,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 3006 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 03:56:25,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:56:25,622 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 03:56:25,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:56:26,383 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 03:56:26,383 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:56:26,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2090168298] [2021-11-03 03:56:26,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2090168298] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:56:26,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2728649] [2021-11-03 03:56:26,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:56:26,384 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 03:56:26,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 03:56:26,392 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 03:56:26,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-03 03:56:28,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:56:29,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 3006 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 03:56:29,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:56:29,483 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 03:56:29,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:56:29,956 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 03:56:29,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2728649] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:56:29,956 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 03:56:29,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-03 03:56:29,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525833734] [2021-11-03 03:56:29,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:56:29,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:56:29,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:56:29,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-03 03:56:29,959 INFO L87 Difference]: Start difference. First operand 3542 states and 4586 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 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) [2021-11-03 03:56:31,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:56:31,346 INFO L93 Difference]: Finished difference Result 13426 states and 17396 transitions. [2021-11-03 03:56:31,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:56:31,348 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 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 102 [2021-11-03 03:56:31,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:56:31,410 INFO L225 Difference]: With dead ends: 13426 [2021-11-03 03:56:31,410 INFO L226 Difference]: Without dead ends: 9918 [2021-11-03 03:56:31,422 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-03 03:56:31,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9918 states. [2021-11-03 03:56:31,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9918 to 9906. [2021-11-03 03:56:31,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9906 states, 9890 states have (on average 1.2959555106167846) internal successors, (12817), 9893 states have internal predecessors, (12817), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-03 03:56:31,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9906 states to 9906 states and 12835 transitions. [2021-11-03 03:56:31,780 INFO L78 Accepts]: Start accepts. Automaton has 9906 states and 12835 transitions. Word has length 102 [2021-11-03 03:56:31,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:56:31,781 INFO L470 AbstractCegarLoop]: Abstraction has 9906 states and 12835 transitions. [2021-11-03 03:56:31,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 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) [2021-11-03 03:56:31,781 INFO L276 IsEmpty]: Start isEmpty. Operand 9906 states and 12835 transitions. [2021-11-03 03:56:31,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-03 03:56:31,796 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:56:31,797 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-03 03:56:31,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 03:56:32,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-03 03:56:32,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 03:56:32,198 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-03 03:56:32,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:56:32,198 INFO L85 PathProgramCache]: Analyzing trace with hash 76810797, now seen corresponding path program 1 times [2021-11-03 03:56:32,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:56:32,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1415759873] [2021-11-03 03:56:32,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:56:32,203 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:56:32,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:56:32,204 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:56:32,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 03:56:38,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:56:38,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 3008 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 03:56:38,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:56:38,737 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 03:56:38,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:56:39,496 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 03:56:39,496 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:56:39,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1415759873] [2021-11-03 03:56:39,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1415759873] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:56:39,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [109242456] [2021-11-03 03:56:39,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:56:39,497 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 03:56:39,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 03:56:39,502 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 03:56:39,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-03 03:56:42,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:56:42,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 3008 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 03:56:42,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:56:42,709 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 03:56:42,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:56:43,151 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 03:56:43,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [109242456] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:56:43,152 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 03:56:43,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-03 03:56:43,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034576958] [2021-11-03 03:56:43,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:56:43,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:56:43,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:56:43,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-03 03:56:43,154 INFO L87 Difference]: Start difference. First operand 9906 states and 12835 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 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) [2021-11-03 03:56:44,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:56:44,926 INFO L93 Difference]: Finished difference Result 37620 states and 48736 transitions. [2021-11-03 03:56:44,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:56:44,927 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 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 103 [2021-11-03 03:56:44,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:56:45,050 INFO L225 Difference]: With dead ends: 37620 [2021-11-03 03:56:45,050 INFO L226 Difference]: Without dead ends: 27748 [2021-11-03 03:56:45,078 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-03 03:56:45,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27748 states. [2021-11-03 03:56:46,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27748 to 27736. [2021-11-03 03:56:46,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27736 states, 27696 states have (on average 1.2949162333911035) internal successors, (35864), 27699 states have internal predecessors, (35864), 27 states have call successors, (27), 9 states have call predecessors, (27), 9 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-03 03:56:46,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27736 states to 27736 states and 35918 transitions. [2021-11-03 03:56:46,294 INFO L78 Accepts]: Start accepts. Automaton has 27736 states and 35918 transitions. Word has length 103 [2021-11-03 03:56:46,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:56:46,308 INFO L470 AbstractCegarLoop]: Abstraction has 27736 states and 35918 transitions. [2021-11-03 03:56:46,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 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) [2021-11-03 03:56:46,308 INFO L276 IsEmpty]: Start isEmpty. Operand 27736 states and 35918 transitions. [2021-11-03 03:56:46,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-03 03:56:46,316 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:56:46,316 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-03 03:56:46,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-03 03:56:46,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 03:56:46,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:56:46,733 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-03 03:56:46,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:56:46,734 INFO L85 PathProgramCache]: Analyzing trace with hash 495115828, now seen corresponding path program 1 times [2021-11-03 03:56:46,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:56:46,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [383856647] [2021-11-03 03:56:46,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:56:46,740 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:56:46,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:56:46,741 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:56:46,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 03:56:52,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:56:52,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 3010 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 03:56:52,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:56:53,321 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 03:56:53,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:56:53,988 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 03:56:53,989 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:56:53,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [383856647] [2021-11-03 03:56:53,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [383856647] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:56:53,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [608189404] [2021-11-03 03:56:53,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:56:53,989 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 03:56:53,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 03:56:53,990 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 03:56:53,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-03 03:56:56,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:56:56,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 3010 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 03:56:56,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:56:57,290 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 03:56:57,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:56:57,807 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 03:56:57,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [608189404] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:56:57,808 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 03:56:57,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-03 03:56:57,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591910974] [2021-11-03 03:56:57,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:56:57,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:56:57,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:56:57,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-03 03:56:57,809 INFO L87 Difference]: Start difference. First operand 27736 states and 35918 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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) [2021-11-03 03:57:00,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:57:00,416 INFO L93 Difference]: Finished difference Result 105160 states and 136112 transitions. [2021-11-03 03:57:00,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:57:00,417 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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 104 [2021-11-03 03:57:00,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:57:00,646 INFO L225 Difference]: With dead ends: 105160 [2021-11-03 03:57:00,646 INFO L226 Difference]: Without dead ends: 77458 [2021-11-03 03:57:00,711 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-03 03:57:00,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77458 states. [2021-11-03 03:57:03,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77458 to 77446. [2021-11-03 03:57:03,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77446 states, 77334 states have (on average 1.2934414358496908) internal successors, (100027), 77337 states have internal predecessors, (100027), 81 states have call successors, (81), 27 states have call predecessors, (81), 27 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2021-11-03 03:57:03,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77446 states to 77446 states and 100189 transitions. [2021-11-03 03:57:03,997 INFO L78 Accepts]: Start accepts. Automaton has 77446 states and 100189 transitions. Word has length 104 [2021-11-03 03:57:03,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:57:03,997 INFO L470 AbstractCegarLoop]: Abstraction has 77446 states and 100189 transitions. [2021-11-03 03:57:03,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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) [2021-11-03 03:57:03,997 INFO L276 IsEmpty]: Start isEmpty. Operand 77446 states and 100189 transitions. [2021-11-03 03:57:04,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-03 03:57:04,004 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:57:04,004 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-03 03:57:04,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 03:57:04,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-03 03:57:04,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 03:57:04,419 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-03 03:57:04,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:57:04,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1546993452, now seen corresponding path program 1 times [2021-11-03 03:57:04,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:57:04,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [737497582] [2021-11-03 03:57:04,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:57:04,424 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:57:04,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:57:04,426 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:57:04,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 03:57:10,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:57:10,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 3012 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 03:57:10,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:57:11,347 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 03:57:11,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:57:12,063 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 03:57:12,063 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:57:12,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [737497582] [2021-11-03 03:57:12,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [737497582] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:57:12,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [348624991] [2021-11-03 03:57:12,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:57:12,063 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 03:57:12,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 03:57:12,064 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 03:57:12,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-03 03:57:15,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:57:15,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 3012 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 03:57:15,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:57:15,761 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 03:57:15,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:57:16,234 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 03:57:16,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [348624991] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:57:16,234 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 03:57:16,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-03 03:57:16,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815654659] [2021-11-03 03:57:16,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:57:16,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:57:16,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:57:16,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-03 03:57:16,237 INFO L87 Difference]: Start difference. First operand 77446 states and 100189 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 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) [2021-11-03 03:57:23,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:57:23,559 INFO L93 Difference]: Finished difference Result 292668 states and 378344 transitions. [2021-11-03 03:57:23,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:57:23,560 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 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 105 [2021-11-03 03:57:23,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:57:24,407 INFO L225 Difference]: With dead ends: 292668 [2021-11-03 03:57:24,408 INFO L226 Difference]: Without dead ends: 215256 [2021-11-03 03:57:24,772 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 408 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-03 03:57:25,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215256 states. [2021-11-03 03:57:32,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215256 to 215244. [2021-11-03 03:57:32,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215244 states, 214916 states have (on average 1.2916767481248488) internal successors, (277602), 214919 states have internal predecessors, (277602), 243 states have call successors, (243), 81 states have call predecessors, (243), 81 states have return successors, (243), 243 states have call predecessors, (243), 243 states have call successors, (243) [2021-11-03 03:57:33,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215244 states to 215244 states and 278088 transitions. [2021-11-03 03:57:33,708 INFO L78 Accepts]: Start accepts. Automaton has 215244 states and 278088 transitions. Word has length 105 [2021-11-03 03:57:33,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:57:33,708 INFO L470 AbstractCegarLoop]: Abstraction has 215244 states and 278088 transitions. [2021-11-03 03:57:33,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 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) [2021-11-03 03:57:33,708 INFO L276 IsEmpty]: Start isEmpty. Operand 215244 states and 278088 transitions. [2021-11-03 03:57:33,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-03 03:57:33,812 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:57:33,813 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:57:33,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-03 03:57:34,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-03 03:57:34,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 03:57:34,226 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-03 03:57:34,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:57:34,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1634153412, now seen corresponding path program 1 times [2021-11-03 03:57:34,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:57:34,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1865833223] [2021-11-03 03:57:34,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:57:34,232 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:57:34,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:57:34,233 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:57:34,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 03:57:40,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:57:40,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 3443 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 03:57:40,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:57:42,055 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 03:57:42,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:57:43,235 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 03:57:43,235 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:57:43,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1865833223] [2021-11-03 03:57:43,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1865833223] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:57:43,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1148060734] [2021-11-03 03:57:43,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:57:43,236 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 03:57:43,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 03:57:43,237 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 03:57:43,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8812d04b-606d-4e7e-b1e7-3e5c9e6eeb32/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-03 03:57:46,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:57:46,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 3443 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 03:57:46,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:57:47,681 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-03 03:57:47,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:57:48,496 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-03 03:57:48,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1148060734] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:57:48,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 03:57:48,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-03 03:57:48,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024942181] [2021-11-03 03:57:48,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:57:48,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:57:48,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:57:48,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-03 03:57:48,499 INFO L87 Difference]: Start difference. First operand 215244 states and 278088 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)