./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-lopstr16/flag_loopdep.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-lopstr16/flag_loopdep.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ea0eb860624f2529729bf06b2cf9cdf66fc11dde388f7654e825b0ff58526d73 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:27:50,719 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:27:50,723 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:27:50,776 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:27:50,776 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:27:50,781 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:27:50,782 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:27:50,786 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:27:50,789 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:27:50,791 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:27:50,792 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:27:50,793 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:27:50,794 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:27:50,795 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:27:50,797 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:27:50,799 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:27:50,800 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:27:50,801 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:27:50,803 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:27:50,805 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:27:50,809 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:27:50,811 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:27:50,815 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:27:50,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:27:50,823 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:27:50,826 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:27:50,827 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:27:50,828 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:27:50,830 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:27:50,831 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:27:50,832 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:27:50,833 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:27:50,835 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:27:50,836 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:27:50,838 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:27:50,838 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:27:50,839 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:27:50,839 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:27:50,840 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:27:50,842 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:27:50,842 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:27:50,843 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:27:50,887 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:27:50,887 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:27:50,889 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:27:50,889 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:27:50,890 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:27:50,890 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:27:50,890 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:27:50,890 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:27:50,897 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:27:50,897 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:27:50,898 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:27:50,898 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:27:50,899 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:27:50,899 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:27:50,899 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:27:50,900 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:27:50,900 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:27:50,900 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:27:50,900 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:27:50,900 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:27:50,901 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:27:50,901 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:27:50,901 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:27:50,901 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:27:50,901 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:27:50,902 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:27:50,902 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:27:50,902 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:27:50,902 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:27:50,904 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:27:50,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:27:50,904 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:27:50,905 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:27:50,905 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:27:50,905 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:27:50,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:27:50,905 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:27:50,906 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:27:50,906 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:27:50,906 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_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ea0eb860624f2529729bf06b2cf9cdf66fc11dde388f7654e825b0ff58526d73 [2021-11-07 01:27:51,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:27:51,241 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:27:51,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:27:51,245 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:27:51,246 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:27:51,247 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/array-lopstr16/flag_loopdep.i [2021-11-07 01:27:51,329 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/data/878846d33/2fe4f92539dc442fb5482be58e246bd4/FLAG6586ae115 [2021-11-07 01:27:51,822 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:27:51,823 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/sv-benchmarks/c/array-lopstr16/flag_loopdep.i [2021-11-07 01:27:51,830 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/data/878846d33/2fe4f92539dc442fb5482be58e246bd4/FLAG6586ae115 [2021-11-07 01:27:52,206 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/data/878846d33/2fe4f92539dc442fb5482be58e246bd4 [2021-11-07 01:27:52,211 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:27:52,214 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:27:52,217 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:27:52,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:27:52,229 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:27:52,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:27:52" (1/1) ... [2021-11-07 01:27:52,243 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65bb44d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:52, skipping insertion in model container [2021-11-07 01:27:52,244 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:27:52" (1/1) ... [2021-11-07 01:27:52,251 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:27:52,305 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:27:52,626 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_94527422-0980-463e-b15d-fe54518a9ed8/sv-benchmarks/c/array-lopstr16/flag_loopdep.i[805,818] [2021-11-07 01:27:52,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:27:52,678 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:27:52,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@66dac53d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:52, skipping insertion in model container [2021-11-07 01:27:52,679 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:27:52,679 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:27:52,683 INFO L168 Benchmark]: Toolchain (without parser) took 466.42 ms. Allocated memory was 88.1 MB in the beginning and 121.6 MB in the end (delta: 33.6 MB). Free memory was 55.0 MB in the beginning and 99.2 MB in the end (delta: -44.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:27:52,685 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 88.1 MB. Free memory is still 43.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:27:52,704 INFO L168 Benchmark]: CACSL2BoogieTranslator took 461.83 ms. Allocated memory was 88.1 MB in the beginning and 121.6 MB in the end (delta: 33.6 MB). Free memory was 54.9 MB in the beginning and 99.2 MB in the end (delta: -44.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:27:52,706 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 88.1 MB. Free memory is still 43.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 461.83 ms. Allocated memory was 88.1 MB in the beginning and 121.6 MB in the end (delta: 33.6 MB). Free memory was 54.9 MB in the beginning and 99.2 MB in the end (delta: -44.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 25]: 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_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-lopstr16/flag_loopdep.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ea0eb860624f2529729bf06b2cf9cdf66fc11dde388f7654e825b0ff58526d73 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:27:55,718 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:27:55,721 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:27:55,756 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:27:55,757 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:27:55,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:27:55,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:27:55,763 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:27:55,765 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:27:55,766 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:27:55,768 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:27:55,769 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:27:55,770 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:27:55,771 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:27:55,773 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:27:55,774 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:27:55,775 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:27:55,777 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:27:55,779 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:27:55,781 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:27:55,783 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:27:55,785 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:27:55,786 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:27:55,787 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:27:55,791 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:27:55,792 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:27:55,792 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:27:55,793 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:27:55,794 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:27:55,795 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:27:55,795 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:27:55,796 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:27:55,797 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:27:55,804 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:27:55,808 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:27:55,809 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:27:55,810 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:27:55,810 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:27:55,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:27:55,811 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:27:55,812 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:27:55,813 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:27:55,840 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:27:55,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:27:55,842 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:27:55,842 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:27:55,842 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:27:55,843 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:27:55,843 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:27:55,843 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:27:55,844 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:27:55,845 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:27:55,845 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:27:55,845 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:27:55,846 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:27:55,846 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:27:55,846 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:27:55,847 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:27:55,847 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:27:55,847 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:27:55,848 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:27:55,848 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:27:55,848 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:27:55,849 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:27:55,849 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:27:55,849 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:27:55,850 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:27:55,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:27:55,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:27:55,850 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:27:55,850 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:27:55,851 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:27:55,851 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:27:55,851 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:27:55,851 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:27:55,851 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:27:55,852 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:27:55,852 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_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ea0eb860624f2529729bf06b2cf9cdf66fc11dde388f7654e825b0ff58526d73 [2021-11-07 01:27:56,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:27:56,223 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:27:56,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:27:56,228 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:27:56,229 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:27:56,231 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/array-lopstr16/flag_loopdep.i [2021-11-07 01:27:56,315 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/data/b213db0a6/709a721319d445059e46f18f5792fe05/FLAG0d18c731c [2021-11-07 01:27:56,865 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:27:56,866 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/sv-benchmarks/c/array-lopstr16/flag_loopdep.i [2021-11-07 01:27:56,872 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/data/b213db0a6/709a721319d445059e46f18f5792fe05/FLAG0d18c731c [2021-11-07 01:27:57,257 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/data/b213db0a6/709a721319d445059e46f18f5792fe05 [2021-11-07 01:27:57,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:27:57,274 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:27:57,278 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:27:57,279 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:27:57,282 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:27:57,297 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:27:57" (1/1) ... [2021-11-07 01:27:57,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a01e601 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:57, skipping insertion in model container [2021-11-07 01:27:57,299 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:27:57" (1/1) ... [2021-11-07 01:27:57,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:27:57,345 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:27:57,700 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_94527422-0980-463e-b15d-fe54518a9ed8/sv-benchmarks/c/array-lopstr16/flag_loopdep.i[805,818] [2021-11-07 01:27:57,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:27:57,791 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:27:57,798 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:27:57,812 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_94527422-0980-463e-b15d-fe54518a9ed8/sv-benchmarks/c/array-lopstr16/flag_loopdep.i[805,818] [2021-11-07 01:27:57,842 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:27:57,847 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:27:57,914 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_94527422-0980-463e-b15d-fe54518a9ed8/sv-benchmarks/c/array-lopstr16/flag_loopdep.i[805,818] [2021-11-07 01:27:57,954 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:27:57,972 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:27:57,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:57 WrapperNode [2021-11-07 01:27:57,973 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:27:57,975 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:27:57,975 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:27:57,975 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:27:57,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:57" (1/1) ... [2021-11-07 01:27:58,001 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:57" (1/1) ... [2021-11-07 01:27:58,028 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:27:58,029 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:27:58,030 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:27:58,030 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:27:58,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:57" (1/1) ... [2021-11-07 01:27:58,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:57" (1/1) ... [2021-11-07 01:27:58,047 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:57" (1/1) ... [2021-11-07 01:27:58,047 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:57" (1/1) ... [2021-11-07 01:27:58,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:57" (1/1) ... [2021-11-07 01:27:58,070 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:57" (1/1) ... [2021-11-07 01:27:58,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:57" (1/1) ... [2021-11-07 01:27:58,083 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:27:58,084 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:27:58,085 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:27:58,086 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:27:58,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:57" (1/1) ... [2021-11-07 01:27:58,094 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:27:58,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:27:58,121 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:27:58,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:27:58,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:27:58,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:27:58,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:27:58,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:27:58,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:27:58,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:27:58,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:27:58,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:27:58,528 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:27:58,528 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-11-07 01:27:58,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:27:58 BoogieIcfgContainer [2021-11-07 01:27:58,530 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:27:58,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:27:58,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:27:58,535 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:27:58,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:27:57" (1/3) ... [2021-11-07 01:27:58,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49ed1509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:27:58, skipping insertion in model container [2021-11-07 01:27:58,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:57" (2/3) ... [2021-11-07 01:27:58,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49ed1509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:27:58, skipping insertion in model container [2021-11-07 01:27:58,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:27:58" (3/3) ... [2021-11-07 01:27:58,538 INFO L111 eAbstractionObserver]: Analyzing ICFG flag_loopdep.i [2021-11-07 01:27:58,543 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:27:58,543 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:27:58,606 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:27:58,613 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:27:58,613 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:27:58,627 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:58,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 01:27:58,632 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:58,633 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:27:58,644 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:27:58,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:58,655 INFO L85 PathProgramCache]: Analyzing trace with hash -2060710478, now seen corresponding path program 1 times [2021-11-07 01:27:58,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:27:58,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1566430334] [2021-11-07 01:27:58,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:58,669 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:27:58,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:27:58,673 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:27:58,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:27:58,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:58,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:27:58,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:27:58,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:27:58,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:27:58,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:27:58,912 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:27:58,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1566430334] [2021-11-07 01:27:58,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1566430334] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:27:58,914 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:27:58,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:27:58,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783439244] [2021-11-07 01:27:58,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:27:58,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:27:58,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:27:58,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:27:58,953 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 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) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:58,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:27:58,970 INFO L93 Difference]: Finished difference Result 36 states and 50 transitions. [2021-11-07 01:27:58,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:27:58,972 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2021-11-07 01:27:58,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:27:58,979 INFO L225 Difference]: With dead ends: 36 [2021-11-07 01:27:58,979 INFO L226 Difference]: Without dead ends: 16 [2021-11-07 01:27:58,982 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:27:58,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-07 01:27:59,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-07 01:27:59,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:59,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2021-11-07 01:27:59,014 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 10 [2021-11-07 01:27:59,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:27:59,015 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2021-11-07 01:27:59,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:59,016 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2021-11-07 01:27:59,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 01:27:59,017 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:59,017 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:27:59,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:27:59,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:27:59,228 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:27:59,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:59,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1919336157, now seen corresponding path program 1 times [2021-11-07 01:27:59,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:27:59,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2056535576] [2021-11-07 01:27:59,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:59,236 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:27:59,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:27:59,238 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:27:59,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:27:59,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:59,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:27:59,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:27:59,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:27:59,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:27:59,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:27:59,506 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:27:59,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2056535576] [2021-11-07 01:27:59,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2056535576] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:27:59,507 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:27:59,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:27:59,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303841439] [2021-11-07 01:27:59,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:27:59,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:27:59,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:27:59,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:27:59,511 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:59,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:27:59,549 INFO L93 Difference]: Finished difference Result 31 states and 40 transitions. [2021-11-07 01:27:59,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:27:59,551 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 10 [2021-11-07 01:27:59,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:27:59,553 INFO L225 Difference]: With dead ends: 31 [2021-11-07 01:27:59,555 INFO L226 Difference]: Without dead ends: 19 [2021-11-07 01:27:59,557 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:27:59,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-07 01:27:59,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-07 01:27:59,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:59,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2021-11-07 01:27:59,566 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 10 [2021-11-07 01:27:59,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:27:59,566 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-11-07 01:27:59,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:59,571 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2021-11-07 01:27:59,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-07 01:27:59,572 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:59,572 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:27:59,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:27:59,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:27:59,783 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:27:59,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:59,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1315497119, now seen corresponding path program 1 times [2021-11-07 01:27:59,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:27:59,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2030810034] [2021-11-07 01:27:59,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:59,786 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:27:59,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:27:59,809 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:27:59,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:27:59,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:59,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:27:59,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:00,180 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:28:00,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:00,322 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:28:00,322 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:28:00,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2030810034] [2021-11-07 01:28:00,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2030810034] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:28:00,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [505691913] [2021-11-07 01:28:00,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:00,324 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:28:00,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:28:00,328 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:28:00,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-07 01:28:00,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:00,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:28:00,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:00,598 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:28:00,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:00,679 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:28:00,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [505691913] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:28:00,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584794201] [2021-11-07 01:28:00,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:00,681 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:28:00,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:28:00,700 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:28:00,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 01:28:00,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:00,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:28:00,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:00,881 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:28:00,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:00,934 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:28:00,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584794201] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:28:00,935 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-07 01:28:00,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5, 5, 5] total 10 [2021-11-07 01:28:00,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995865903] [2021-11-07 01:28:00,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:28:00,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:28:00,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:28:00,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:28:00,937 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:00,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:00,990 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2021-11-07 01:28:00,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:28:00,991 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2021-11-07 01:28:00,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:00,992 INFO L225 Difference]: With dead ends: 39 [2021-11-07 01:28:00,992 INFO L226 Difference]: Without dead ends: 31 [2021-11-07 01:28:00,993 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:28:00,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-07 01:28:00,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2021-11-07 01:28:00,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 22 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:00,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2021-11-07 01:28:00,998 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 14 [2021-11-07 01:28:00,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:00,999 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2021-11-07 01:28:00,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:00,999 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2021-11-07 01:28:01,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-07 01:28:01,000 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:01,000 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:28:01,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:28:01,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:28:01,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:28:01,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:28:01,627 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:28:01,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:01,628 INFO L85 PathProgramCache]: Analyzing trace with hash -2030845279, now seen corresponding path program 1 times [2021-11-07 01:28:01,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:28:01,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1976612368] [2021-11-07 01:28:01,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:01,629 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:28:01,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:28:01,632 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:28:01,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:28:01,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:01,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:28:01,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:01,876 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 01:28:01,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:02,023 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 01:28:02,023 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:28:02,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1976612368] [2021-11-07 01:28:02,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1976612368] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:28:02,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1773288818] [2021-11-07 01:28:02,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:02,024 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:28:02,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:28:02,026 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:28:02,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-07 01:28:02,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:02,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:28:02,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:02,250 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:28:02,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:02,308 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:28:02,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1773288818] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:28:02,308 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:28:02,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 01:28:02,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283211020] [2021-11-07 01:28:02,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:28:02,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:28:02,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:28:02,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:28:02,311 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:02,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:02,328 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2021-11-07 01:28:02,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:28:02,333 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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 20 [2021-11-07 01:28:02,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:02,333 INFO L225 Difference]: With dead ends: 42 [2021-11-07 01:28:02,334 INFO L226 Difference]: Without dead ends: 23 [2021-11-07 01:28:02,334 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:28:02,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-07 01:28:02,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-11-07 01:28:02,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:02,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-11-07 01:28:02,338 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 20 [2021-11-07 01:28:02,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:02,339 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-11-07 01:28:02,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:02,339 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-11-07 01:28:02,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-07 01:28:02,340 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:02,340 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:28:02,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:28:02,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:28:02,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:28:02,753 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:28:02,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:02,753 INFO L85 PathProgramCache]: Analyzing trace with hash -2139127327, now seen corresponding path program 1 times [2021-11-07 01:28:02,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:28:02,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [890657047] [2021-11-07 01:28:02,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:02,754 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:28:02,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:28:02,758 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:28:02,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:28:02,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:02,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:28:02,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:03,138 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 01:28:03,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:03,371 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 01:28:03,371 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:28:03,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [890657047] [2021-11-07 01:28:03,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [890657047] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:28:03,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [738866368] [2021-11-07 01:28:03,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:03,372 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:28:03,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:28:03,375 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:28:03,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-07 01:28:03,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:03,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:28:03,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:03,866 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 01:28:03,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:03,975 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 01:28:03,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [738866368] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:28:03,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844129419] [2021-11-07 01:28:03,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:03,979 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:28:03,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:28:03,992 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:28:04,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-07 01:28:04,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:04,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 01:28:04,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:04,597 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:28:04,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:06,911 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:28:06,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 40 [2021-11-07 01:28:06,940 INFO L354 Elim1Store]: treesize reduction 7, result has 41.7 percent of original size [2021-11-07 01:28:06,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 29 [2021-11-07 01:28:07,023 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:28:07,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844129419] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:28:07,023 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:28:07,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 8, 7] total 19 [2021-11-07 01:28:07,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232625032] [2021-11-07 01:28:07,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-07 01:28:07,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:28:07,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-07 01:28:07,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-11-07 01:28:07,026 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 19 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:07,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:07,704 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2021-11-07 01:28:07,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-07 01:28:07,705 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 19 states have internal predecessors, (53), 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 20 [2021-11-07 01:28:07,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:07,706 INFO L225 Difference]: With dead ends: 54 [2021-11-07 01:28:07,706 INFO L226 Difference]: Without dead ends: 38 [2021-11-07 01:28:07,707 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=145, Invalid=667, Unknown=0, NotChecked=0, Total=812 [2021-11-07 01:28:07,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-07 01:28:07,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2021-11-07 01:28:07,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 33 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:07,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2021-11-07 01:28:07,713 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 20 [2021-11-07 01:28:07,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:07,714 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2021-11-07 01:28:07,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 19 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:07,714 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2021-11-07 01:28:07,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-07 01:28:07,716 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:07,716 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:28:07,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:28:07,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:28:08,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:28:08,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:28:08,329 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:28:08,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:08,330 INFO L85 PathProgramCache]: Analyzing trace with hash 225697560, now seen corresponding path program 1 times [2021-11-07 01:28:08,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:28:08,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [486693322] [2021-11-07 01:28:08,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:08,331 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:28:08,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:28:08,333 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:28:08,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:28:08,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:08,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:28:08,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:08,779 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:28:08,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:09,237 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:28:09,237 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:28:09,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [486693322] [2021-11-07 01:28:09,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [486693322] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:28:09,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1088705795] [2021-11-07 01:28:09,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:09,238 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:28:09,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:28:09,243 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:28:09,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-07 01:28:09,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:09,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:28:09,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:09,673 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:28:09,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:09,776 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:28:09,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1088705795] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:28:09,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964421939] [2021-11-07 01:28:09,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:09,777 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:28:09,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:28:09,779 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:28:09,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-07 01:28:10,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:10,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:28:10,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:10,160 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-07 01:28:10,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:10,345 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-07 01:28:10,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964421939] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:28:10,345 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:28:10,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 5, 5] total 22 [2021-11-07 01:28:10,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895472141] [2021-11-07 01:28:10,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-07 01:28:10,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:28:10,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-07 01:28:10,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-11-07 01:28:10,348 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand has 22 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 22 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:11,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:11,598 INFO L93 Difference]: Finished difference Result 112 states and 127 transitions. [2021-11-07 01:28:11,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-07 01:28:11,599 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 22 states have internal predecessors, (62), 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 33 [2021-11-07 01:28:11,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:11,600 INFO L225 Difference]: With dead ends: 112 [2021-11-07 01:28:11,600 INFO L226 Difference]: Without dead ends: 93 [2021-11-07 01:28:11,601 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=211, Invalid=659, Unknown=0, NotChecked=0, Total=870 [2021-11-07 01:28:11,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-11-07 01:28:11,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 62. [2021-11-07 01:28:11,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 61 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:11,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2021-11-07 01:28:11,617 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 33 [2021-11-07 01:28:11,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:11,617 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions. [2021-11-07 01:28:11,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 22 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:11,618 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions. [2021-11-07 01:28:11,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-07 01:28:11,621 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:11,622 INFO L513 BasicCegarLoop]: trace histogram [14, 14, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:28:11,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:28:11,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:28:12,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:28:12,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:28:12,237 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:28:12,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:12,237 INFO L85 PathProgramCache]: Analyzing trace with hash 616513032, now seen corresponding path program 2 times [2021-11-07 01:28:12,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:28:12,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1853599112] [2021-11-07 01:28:12,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:28:12,238 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:28:12,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:28:12,240 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:28:12,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 01:28:12,641 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:28:12,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:28:12,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 01:28:12,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:13,488 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-11-07 01:28:13,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:14,917 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-11-07 01:28:14,917 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:28:14,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1853599112] [2021-11-07 01:28:14,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1853599112] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:28:14,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [780579268] [2021-11-07 01:28:14,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:28:14,918 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:28:14,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:28:14,919 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:28:14,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-07 01:28:15,373 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:28:15,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:28:15,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 01:28:15,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:15,692 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-11-07 01:28:15,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:15,926 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-11-07 01:28:15,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [780579268] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:28:15,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953658514] [2021-11-07 01:28:15,926 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:28:15,926 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:28:15,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:28:15,927 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:28:15,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-07 01:28:16,264 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:28:16,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:28:16,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 01:28:16,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:17,407 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-11-07 01:28:17,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:18,860 INFO L354 Elim1Store]: treesize reduction 9, result has 35.7 percent of original size [2021-11-07 01:28:18,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 35 [2021-11-07 01:28:18,874 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-07 01:28:18,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 17 [2021-11-07 01:28:19,047 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-11-07 01:28:19,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953658514] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:28:19,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:28:19,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17, 17, 11, 10] total 49 [2021-11-07 01:28:19,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510726667] [2021-11-07 01:28:19,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-11-07 01:28:19,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:28:19,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-11-07 01:28:19,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=1996, Unknown=0, NotChecked=0, Total=2352 [2021-11-07 01:28:19,051 INFO L87 Difference]: Start difference. First operand 62 states and 64 transitions. Second operand has 49 states, 49 states have (on average 2.4489795918367347) internal successors, (120), 49 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:25,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:25,597 INFO L93 Difference]: Finished difference Result 134 states and 154 transitions. [2021-11-07 01:28:25,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-07 01:28:25,609 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.4489795918367347) internal successors, (120), 49 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-07 01:28:25,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:25,611 INFO L225 Difference]: With dead ends: 134 [2021-11-07 01:28:25,611 INFO L226 Difference]: Without dead ends: 103 [2021-11-07 01:28:25,615 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1088 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=1199, Invalid=5941, Unknown=0, NotChecked=0, Total=7140 [2021-11-07 01:28:25,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-11-07 01:28:25,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2021-11-07 01:28:25,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.030612244897959) internal successors, (101), 98 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:25,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 101 transitions. [2021-11-07 01:28:25,629 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 101 transitions. Word has length 61 [2021-11-07 01:28:25,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:25,630 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 101 transitions. [2021-11-07 01:28:25,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.4489795918367347) internal successors, (120), 49 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:25,630 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 101 transitions. [2021-11-07 01:28:25,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-07 01:28:25,633 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:25,633 INFO L513 BasicCegarLoop]: trace histogram [30, 30, 6, 6, 6, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:28:25,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:28:25,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-07 01:28:26,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:28:26,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:28:26,261 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:28:26,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:26,261 INFO L85 PathProgramCache]: Analyzing trace with hash 333100921, now seen corresponding path program 3 times [2021-11-07 01:28:26,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:28:26,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1311352273] [2021-11-07 01:28:26,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:28:26,263 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:28:26,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:28:26,272 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:28:26,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 01:28:26,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-07 01:28:26,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:28:26,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 01:28:26,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:28,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-11-07 01:28:29,288 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:28:29,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 31 [2021-11-07 01:28:29,722 INFO L134 CoverageAnalysis]: Checked inductivity of 962 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 887 trivial. 0 not checked. [2021-11-07 01:28:29,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:30,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 64 [2021-11-07 01:28:46,850 INFO L134 CoverageAnalysis]: Checked inductivity of 962 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 887 trivial. 0 not checked. [2021-11-07 01:28:46,851 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:28:46,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1311352273] [2021-11-07 01:28:46,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1311352273] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:28:46,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [34512039] [2021-11-07 01:28:46,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:28:46,852 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:28:46,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:28:46,861 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:28:46,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-07 01:28:47,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-07 01:28:47,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:28:47,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 01:28:47,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:48,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-11-07 01:28:49,048 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:28:49,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 31 [2021-11-07 01:28:49,214 INFO L134 CoverageAnalysis]: Checked inductivity of 962 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 887 trivial. 0 not checked. [2021-11-07 01:28:49,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:49,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 64 [2021-11-07 01:29:04,489 INFO L134 CoverageAnalysis]: Checked inductivity of 962 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 887 trivial. 0 not checked. [2021-11-07 01:29:04,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [34512039] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:29:04,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122159187] [2021-11-07 01:29:04,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:29:04,490 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:29:04,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:29:04,491 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:29:04,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-07 01:29:05,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-07 01:29:05,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:29:05,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 01:29:05,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:29:06,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-11-07 01:29:06,550 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:29:06,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 31 [2021-11-07 01:29:06,721 INFO L134 CoverageAnalysis]: Checked inductivity of 962 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 887 trivial. 0 not checked. [2021-11-07 01:29:06,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:29:07,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 64 [2021-11-07 01:29:22,303 INFO L134 CoverageAnalysis]: Checked inductivity of 962 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 887 trivial. 0 not checked. [2021-11-07 01:29:22,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122159187] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:29:22,303 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:29:22,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 16 [2021-11-07 01:29:22,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830066615] [2021-11-07 01:29:22,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 01:29:22,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:29:22,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 01:29:22,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-11-07 01:29:22,306 INFO L87 Difference]: Start difference. First operand 99 states and 101 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:23,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:23,571 INFO L93 Difference]: Finished difference Result 99 states and 101 transitions. [2021-11-07 01:29:23,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:29:23,573 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 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 [2021-11-07 01:29:23,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:23,573 INFO L225 Difference]: With dead ends: 99 [2021-11-07 01:29:23,574 INFO L226 Difference]: Without dead ends: 0 [2021-11-07 01:29:23,574 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 568 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2021-11-07 01:29:23,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-07 01:29:23,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-07 01:29:23,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:23,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-07 01:29:23,575 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 98 [2021-11-07 01:29:23,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:23,575 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 01:29:23,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:23,575 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-07 01:29:23,575 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-07 01:29:23,577 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:29:23,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-07 01:29:23,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-07 01:29:24,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-07 01:29:24,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:29:24,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-07 01:29:24,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:29:24,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:29:24,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:29:24,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:29:25,450 INFO L857 garLoopResultBuilder]: For program point L35-2(lines 35 41) no Hoare annotation was computed. [2021-11-07 01:29:25,450 INFO L853 garLoopResultBuilder]: At program point L35-3(lines 35 41) the Hoare annotation is: (let ((.cse4 (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#a~0.base|)) (.cse0 (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#a~0.base|))) (let ((.cse2 (= (select .cse0 |ULTIMATE.start_main_~#a~0.offset|) (_ bv0 32))) (.cse3 (= |ULTIMATE.start_main_~#a~0.base| ULTIMATE.start_init_~a.base)) (.cse5 (= ULTIMATE.start_init_~a.offset |ULTIMATE.start_main_~#a~0.offset|)) (.cse6 (= (select .cse4 |ULTIMATE.start_main_~#a~0.offset|) (_ bv0 32))) (.cse7 (not (= (select .cse4 (bvadd (_ bv4294967292 32) (bvmul ULTIMATE.start_init_~i~0 (_ bv4 32)) |ULTIMATE.start_main_~#a~0.offset|)) (_ bv0 32)))) (.cse8 (bvslt (bvadd (_ bv4294967295 32) ULTIMATE.start_init_~i~0) ULTIMATE.start_init_~size)) (.cse9 (= (_ bv1000000 32) ULTIMATE.start_init_~size)) (.cse10 (exists ((ULTIMATE.start_init_~i~0 (_ BitVec 32))) (and (not (bvslt ULTIMATE.start_init_~i~0 (_ bv1000000 32))) (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#a~0.base|) (bvadd (_ bv4294967292 32) (bvmul ULTIMATE.start_init_~i~0 (_ bv4 32)) |ULTIMATE.start_main_~#a~0.offset|)) (_ bv0 32))) (bvslt (bvadd (_ bv4294967295 32) ULTIMATE.start_init_~i~0) (_ bv1000000 32))))) (.cse11 (= |ULTIMATE.start_main_~#a~0.offset| (_ bv0 32)))) (or (let ((.cse1 (bvadd (_ bv4 32) |ULTIMATE.start_main_~#a~0.offset|))) (and (= (select .cse0 .cse1) (_ bv0 32)) .cse2 .cse3 (exists ((ULTIMATE.start_init_~i~0 (_ BitVec 32))) (and (not (= (bvmul (_ bv4 32) ULTIMATE.start_init_~i~0) (bvmul (_ bv4 32) ULTIMATE.start_main_~i~1))) (not (bvslt ULTIMATE.start_init_~i~0 (_ bv1000000 32))) (bvslt (bvadd (_ bv4294967295 32) ULTIMATE.start_init_~i~0) (_ bv1000000 32)))) (= (select .cse4 .cse1) (_ bv0 32)) .cse5 .cse6 (bvslt (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~i~1) (_ bv1000000 32)) .cse7 .cse8 .cse9 .cse10 .cse11)) (and .cse3 .cse5 .cse7 .cse8 .cse9 .cse10 (= ULTIMATE.start_main_~i~1 (_ bv0 32)) .cse11) (and (= ULTIMATE.start_main_~i~1 (_ bv1 32)) .cse2 .cse3 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11) (= (_ bv1 32) ULTIMATE.start_main_~flag~0)))) [2021-11-07 01:29:25,451 INFO L857 garLoopResultBuilder]: For program point L35-4(lines 35 41) no Hoare annotation was computed. [2021-11-07 01:29:25,451 INFO L857 garLoopResultBuilder]: For program point L23-2(lines 23 26) no Hoare annotation was computed. [2021-11-07 01:29:25,451 INFO L853 garLoopResultBuilder]: At program point L23-3(lines 23 26) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~#a~0.base| ULTIMATE.start_init_~a.base)) (.cse1 (= ULTIMATE.start_init_~a.offset |ULTIMATE.start_main_~#a~0.offset|)) (.cse2 (= (_ bv1000000 32) ULTIMATE.start_init_~size)) (.cse3 (= |ULTIMATE.start_main_~#a~0.offset| (_ bv0 32)))) (or (and .cse0 .cse1 (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#a~0.base|) (bvadd (_ bv4294967292 32) (bvmul ULTIMATE.start_init_~i~0 (_ bv4 32)) |ULTIMATE.start_main_~#a~0.offset|)) (_ bv0 32))) (bvslt (bvadd (_ bv4294967295 32) ULTIMATE.start_init_~i~0) ULTIMATE.start_init_~size) .cse2 .cse3) (and .cse0 (= ULTIMATE.start_init_~i~0 (_ bv0 32)) .cse1 .cse2 .cse3))) [2021-11-07 01:29:25,451 INFO L857 garLoopResultBuilder]: For program point L44(lines 44 45) no Hoare annotation was computed. [2021-11-07 01:29:25,451 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-07 01:29:25,451 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-07 01:29:25,451 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-07 01:29:25,451 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-11-07 01:29:25,452 INFO L857 garLoopResultBuilder]: For program point L20(lines 20 27) no Hoare annotation was computed. [2021-11-07 01:29:25,452 INFO L857 garLoopResultBuilder]: For program point L37(lines 37 40) no Hoare annotation was computed. [2021-11-07 01:29:25,452 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-07 01:29:25,452 INFO L857 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2021-11-07 01:29:25,452 INFO L857 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2021-11-07 01:29:25,452 INFO L857 garLoopResultBuilder]: For program point L13-3(line 13) no Hoare annotation was computed. [2021-11-07 01:29:25,452 INFO L857 garLoopResultBuilder]: For program point L42-2(lines 42 46) no Hoare annotation was computed. [2021-11-07 01:29:25,452 INFO L853 garLoopResultBuilder]: At program point L42-3(lines 42 46) the Hoare annotation is: (not (= (_ bv0 32) ULTIMATE.start_main_~flag~0)) [2021-11-07 01:29:25,452 INFO L857 garLoopResultBuilder]: For program point L42-4(lines 42 46) no Hoare annotation was computed. [2021-11-07 01:29:25,453 INFO L860 garLoopResultBuilder]: At program point L47(lines 28 48) the Hoare annotation is: true [2021-11-07 01:29:25,456 INFO L731 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1] [2021-11-07 01:29:25,460 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:29:25,469 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-07 01:29:25,472 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-07 01:29:25,476 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-07 01:29:25,476 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-07 01:29:25,477 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] [2021-11-07 01:29:25,477 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] [2021-11-07 01:29:25,477 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] [2021-11-07 01:29:25,477 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-07 01:29:25,478 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-07 01:29:25,478 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-07 01:29:25,478 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] [2021-11-07 01:29:25,478 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-07 01:29:25,479 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] [2021-11-07 01:29:25,479 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] [2021-11-07 01:29:25,479 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-07 01:29:25,480 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] [2021-11-07 01:29:25,480 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-07 01:29:25,480 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] [2021-11-07 01:29:25,480 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] [2021-11-07 01:29:25,481 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-07 01:29:25,481 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-07 01:29:25,481 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-07 01:29:25,481 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] [2021-11-07 01:29:25,482 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-07 01:29:25,482 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] [2021-11-07 01:29:25,482 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] [2021-11-07 01:29:25,484 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-07 01:29:25,485 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-07 01:29:25,485 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] [2021-11-07 01:29:25,485 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] [2021-11-07 01:29:25,486 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] [2021-11-07 01:29:25,486 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-07 01:29:25,486 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-07 01:29:25,486 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-07 01:29:25,487 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] [2021-11-07 01:29:25,487 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-07 01:29:25,487 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] [2021-11-07 01:29:25,487 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] [2021-11-07 01:29:25,488 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-07 01:29:25,488 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] [2021-11-07 01:29:25,488 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-07 01:29:25,488 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] [2021-11-07 01:29:25,489 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] [2021-11-07 01:29:25,489 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-07 01:29:25,489 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-07 01:29:25,489 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-07 01:29:25,490 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] [2021-11-07 01:29:25,490 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-07 01:29:25,490 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] [2021-11-07 01:29:25,490 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] [2021-11-07 01:29:25,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:29:25 BoogieIcfgContainer [2021-11-07 01:29:25,493 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:29:25,494 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:29:25,494 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:29:25,494 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:29:25,495 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:27:58" (3/4) ... [2021-11-07 01:29:25,497 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-07 01:29:25,507 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-11-07 01:29:25,508 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-07 01:29:25,508 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-07 01:29:25,508 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-07 01:29:25,531 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((#memory_$Pointer$[a][~bvadd64(4bv32, a)] == 0bv32 && #memory_$Pointer$[a][a] == 0bv32) && a == a) && (\exists ULTIMATE.start_init_~i~0 : bv32 :: (!(~bvmul32(4bv32, ULTIMATE.start_init_~i~0) == ~bvmul32(4bv32, i)) && !~bvslt32(ULTIMATE.start_init_~i~0, 1000000bv32)) && ~bvslt32(~bvadd64(4294967295bv32, ULTIMATE.start_init_~i~0), 1000000bv32))) && #memory_$Pointer$[a][~bvadd64(4bv32, a)] == 0bv32) && a == a) && #memory_$Pointer$[a][a] == 0bv32) && ~bvslt32(~bvadd64(4294967295bv32, i), 1000000bv32)) && !(#memory_$Pointer$[a][~bvadd64(4294967292bv32, ~bvmul32(i, 4bv32), a)] == 0bv32)) && ~bvslt32(~bvadd64(4294967295bv32, i), size)) && 1000000bv32 == size) && (\exists ULTIMATE.start_init_~i~0 : bv32 :: (!~bvslt32(ULTIMATE.start_init_~i~0, 1000000bv32) && !(#memory_$Pointer$[a][~bvadd64(4294967292bv32, ~bvmul32(ULTIMATE.start_init_~i~0, 4bv32), a)] == 0bv32)) && ~bvslt32(~bvadd64(4294967295bv32, ULTIMATE.start_init_~i~0), 1000000bv32))) && a == 0bv32) || (((((((a == a && a == a) && !(#memory_$Pointer$[a][~bvadd64(4294967292bv32, ~bvmul32(i, 4bv32), a)] == 0bv32)) && ~bvslt32(~bvadd64(4294967295bv32, i), size)) && 1000000bv32 == size) && (\exists ULTIMATE.start_init_~i~0 : bv32 :: (!~bvslt32(ULTIMATE.start_init_~i~0, 1000000bv32) && !(#memory_$Pointer$[a][~bvadd64(4294967292bv32, ~bvmul32(ULTIMATE.start_init_~i~0, 4bv32), a)] == 0bv32)) && ~bvslt32(~bvadd64(4294967295bv32, ULTIMATE.start_init_~i~0), 1000000bv32))) && i == 0bv32) && a == 0bv32)) || (((((((((i == 1bv32 && #memory_$Pointer$[a][a] == 0bv32) && a == a) && a == a) && #memory_$Pointer$[a][a] == 0bv32) && !(#memory_$Pointer$[a][~bvadd64(4294967292bv32, ~bvmul32(i, 4bv32), a)] == 0bv32)) && ~bvslt32(~bvadd64(4294967295bv32, i), size)) && 1000000bv32 == size) && (\exists ULTIMATE.start_init_~i~0 : bv32 :: (!~bvslt32(ULTIMATE.start_init_~i~0, 1000000bv32) && !(#memory_$Pointer$[a][~bvadd64(4294967292bv32, ~bvmul32(ULTIMATE.start_init_~i~0, 4bv32), a)] == 0bv32)) && ~bvslt32(~bvadd64(4294967295bv32, ULTIMATE.start_init_~i~0), 1000000bv32))) && a == 0bv32)) || 1bv32 == flag [2021-11-07 01:29:25,556 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 01:29:25,556 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:29:25,557 INFO L168 Benchmark]: Toolchain (without parser) took 88282.79 ms. Allocated memory was 60.8 MB in the beginning and 79.7 MB in the end (delta: 18.9 MB). Free memory was 43.1 MB in the beginning and 26.1 MB in the end (delta: 17.0 MB). Peak memory consumption was 33.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:29:25,558 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 44.0 MB. Free memory was 25.0 MB in the beginning and 25.0 MB in the end (delta: 23.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:29:25,558 INFO L168 Benchmark]: CACSL2BoogieTranslator took 695.11 ms. Allocated memory is still 60.8 MB. Free memory was 43.0 MB in the beginning and 44.3 MB in the end (delta: -1.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:29:25,558 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.02 ms. Allocated memory is still 60.8 MB. Free memory was 44.1 MB in the beginning and 42.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:29:25,558 INFO L168 Benchmark]: Boogie Preprocessor took 54.38 ms. Allocated memory is still 60.8 MB. Free memory was 42.7 MB in the beginning and 41.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:29:25,559 INFO L168 Benchmark]: RCFGBuilder took 446.15 ms. Allocated memory is still 60.8 MB. Free memory was 41.2 MB in the beginning and 30.3 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:29:25,559 INFO L168 Benchmark]: TraceAbstraction took 86961.42 ms. Allocated memory was 60.8 MB in the beginning and 79.7 MB in the end (delta: 18.9 MB). Free memory was 29.9 MB in the beginning and 29.1 MB in the end (delta: 812.3 kB). Peak memory consumption was 34.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:29:25,560 INFO L168 Benchmark]: Witness Printer took 62.66 ms. Allocated memory is still 79.7 MB. Free memory was 29.1 MB in the beginning and 26.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:29:25,562 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 44.0 MB. Free memory was 25.0 MB in the beginning and 25.0 MB in the end (delta: 23.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 695.11 ms. Allocated memory is still 60.8 MB. Free memory was 43.0 MB in the beginning and 44.3 MB in the end (delta: -1.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.02 ms. Allocated memory is still 60.8 MB. Free memory was 44.1 MB in the beginning and 42.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.38 ms. Allocated memory is still 60.8 MB. Free memory was 42.7 MB in the beginning and 41.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 446.15 ms. Allocated memory is still 60.8 MB. Free memory was 41.2 MB in the beginning and 30.3 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 86961.42 ms. Allocated memory was 60.8 MB in the beginning and 79.7 MB in the end (delta: 18.9 MB). Free memory was 29.9 MB in the beginning and 29.1 MB in the end (delta: 812.3 kB). Peak memory consumption was 34.6 MB. Max. memory is 16.1 GB. * Witness Printer took 62.66 ms. Allocated memory is still 79.7 MB. Free memory was 29.1 MB in the beginning and 26.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 86.8s, OverallIterations: 8, TraceHistogramMax: 30, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 9.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 125 SDtfs, 304 SDslu, 537 SDs, 0 SdLazy, 1738 SolverSat, 139 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1500 GetRequests, 1322 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1336 ImplicationChecksByTransitivity, 12.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99occurred in iteration=7, InterpolantAutomatonStates: 107, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 47 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 46 NumberOfFragments, 298 HoareAnnotationTreeSize, 4 FomulaSimplifications, 2137 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 4 FomulaSimplificationsInter, 132 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 65.6s InterpolantComputationTime, 738 NumberOfCodeBlocks, 534 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 1438 ConstructedInterpolants, 294 QuantifiedInterpolants, 15219 SizeOfPredicates, 103 NumberOfNonLiveVariables, 1985 ConjunctsInSsa, 180 ConjunctsInUnsatCore, 38 InterpolantComputations, 8 PerfectInterpolantSequences, 6165/7650 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 23]: Loop Invariant [2021-11-07 01:29:25,572 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-07 01:29:25,573 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base Derived loop invariant: (((((a == a && a == a) && !(#memory_$Pointer$[a][~bvadd64(4294967292bv32, ~bvmul32(i, 4bv32), a)] == 0bv32)) && ~bvslt32(~bvadd64(4294967295bv32, i), size)) && 1000000bv32 == size) && a == 0bv32) || ((((a == a && i == 0bv32) && a == a) && 1000000bv32 == size) && a == 0bv32) - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: !(0bv32 == flag) - InvariantResult [Line: 35]: Loop Invariant [2021-11-07 01:29:25,575 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-07 01:29:25,580 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-07 01:29:25,580 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] [2021-11-07 01:29:25,581 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] [2021-11-07 01:29:25,581 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] [2021-11-07 01:29:25,581 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-07 01:29:25,581 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-07 01:29:25,581 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-07 01:29:25,582 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] [2021-11-07 01:29:25,582 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-07 01:29:25,582 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] [2021-11-07 01:29:25,582 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] [2021-11-07 01:29:25,582 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-07 01:29:25,583 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] [2021-11-07 01:29:25,583 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-07 01:29:25,583 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] [2021-11-07 01:29:25,583 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] [2021-11-07 01:29:25,583 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-07 01:29:25,584 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-07 01:29:25,584 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-07 01:29:25,584 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] [2021-11-07 01:29:25,584 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-07 01:29:25,584 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] [2021-11-07 01:29:25,585 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] [2021-11-07 01:29:25,586 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-07 01:29:25,587 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-07 01:29:25,587 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] [2021-11-07 01:29:25,587 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] [2021-11-07 01:29:25,587 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] [2021-11-07 01:29:25,588 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-07 01:29:25,588 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-07 01:29:25,588 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-07 01:29:25,588 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] [2021-11-07 01:29:25,588 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-07 01:29:25,589 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] [2021-11-07 01:29:25,589 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] [2021-11-07 01:29:25,589 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-07 01:29:25,589 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] [2021-11-07 01:29:25,589 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-07 01:29:25,589 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] [2021-11-07 01:29:25,590 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] [2021-11-07 01:29:25,590 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-07 01:29:25,590 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-07 01:29:25,590 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-07 01:29:25,590 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] [2021-11-07 01:29:25,591 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-07 01:29:25,591 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] [2021-11-07 01:29:25,591 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_init_~i~0,QUANTIFIED] Derived loop invariant: ((((((((((((((#memory_$Pointer$[a][~bvadd64(4bv32, a)] == 0bv32 && #memory_$Pointer$[a][a] == 0bv32) && a == a) && (\exists ULTIMATE.start_init_~i~0 : bv32 :: (!(~bvmul32(4bv32, ULTIMATE.start_init_~i~0) == ~bvmul32(4bv32, i)) && !~bvslt32(ULTIMATE.start_init_~i~0, 1000000bv32)) && ~bvslt32(~bvadd64(4294967295bv32, ULTIMATE.start_init_~i~0), 1000000bv32))) && #memory_$Pointer$[a][~bvadd64(4bv32, a)] == 0bv32) && a == a) && #memory_$Pointer$[a][a] == 0bv32) && ~bvslt32(~bvadd64(4294967295bv32, i), 1000000bv32)) && !(#memory_$Pointer$[a][~bvadd64(4294967292bv32, ~bvmul32(i, 4bv32), a)] == 0bv32)) && ~bvslt32(~bvadd64(4294967295bv32, i), size)) && 1000000bv32 == size) && (\exists ULTIMATE.start_init_~i~0 : bv32 :: (!~bvslt32(ULTIMATE.start_init_~i~0, 1000000bv32) && !(#memory_$Pointer$[a][~bvadd64(4294967292bv32, ~bvmul32(ULTIMATE.start_init_~i~0, 4bv32), a)] == 0bv32)) && ~bvslt32(~bvadd64(4294967295bv32, ULTIMATE.start_init_~i~0), 1000000bv32))) && a == 0bv32) || (((((((a == a && a == a) && !(#memory_$Pointer$[a][~bvadd64(4294967292bv32, ~bvmul32(i, 4bv32), a)] == 0bv32)) && ~bvslt32(~bvadd64(4294967295bv32, i), size)) && 1000000bv32 == size) && (\exists ULTIMATE.start_init_~i~0 : bv32 :: (!~bvslt32(ULTIMATE.start_init_~i~0, 1000000bv32) && !(#memory_$Pointer$[a][~bvadd64(4294967292bv32, ~bvmul32(ULTIMATE.start_init_~i~0, 4bv32), a)] == 0bv32)) && ~bvslt32(~bvadd64(4294967295bv32, ULTIMATE.start_init_~i~0), 1000000bv32))) && i == 0bv32) && a == 0bv32)) || (((((((((i == 1bv32 && #memory_$Pointer$[a][a] == 0bv32) && a == a) && a == a) && #memory_$Pointer$[a][a] == 0bv32) && !(#memory_$Pointer$[a][~bvadd64(4294967292bv32, ~bvmul32(i, 4bv32), a)] == 0bv32)) && ~bvslt32(~bvadd64(4294967295bv32, i), size)) && 1000000bv32 == size) && (\exists ULTIMATE.start_init_~i~0 : bv32 :: (!~bvslt32(ULTIMATE.start_init_~i~0, 1000000bv32) && !(#memory_$Pointer$[a][~bvadd64(4294967292bv32, ~bvmul32(ULTIMATE.start_init_~i~0, 4bv32), a)] == 0bv32)) && ~bvslt32(~bvadd64(4294967295bv32, ULTIMATE.start_init_~i~0), 1000000bv32))) && a == 0bv32)) || 1bv32 == flag RESULT: Ultimate proved your program to be correct! [2021-11-07 01:29:25,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94527422-0980-463e-b15d-fe54518a9ed8/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE