./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/busybox-1.22.0/basename-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd8bf81-4fad-48c8-bd1a-5e92f06471ef/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd8bf81-4fad-48c8-bd1a-5e92f06471ef/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd8bf81-4fad-48c8-bd1a-5e92f06471ef/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd8bf81-4fad-48c8-bd1a-5e92f06471ef/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/basename-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd8bf81-4fad-48c8-bd1a-5e92f06471ef/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd8bf81-4fad-48c8-bd1a-5e92f06471ef/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ce82bd2068c431a8a58717550c5ca3a1f22bb267 ......................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd8bf81-4fad-48c8-bd1a-5e92f06471ef/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd8bf81-4fad-48c8-bd1a-5e92f06471ef/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd8bf81-4fad-48c8-bd1a-5e92f06471ef/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd8bf81-4fad-48c8-bd1a-5e92f06471ef/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/basename-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd8bf81-4fad-48c8-bd1a-5e92f06471ef/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd8bf81-4fad-48c8-bd1a-5e92f06471ef/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ce82bd2068c431a8a58717550c5ca3a1f22bb267 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:23:13,548 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:23:13,550 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:23:13,598 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:23:13,600 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:23:13,606 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:23:13,609 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:23:13,613 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:23:13,617 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:23:13,628 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:23:13,630 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:23:13,632 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:23:13,632 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:23:13,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:23:13,637 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:23:13,639 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:23:13,640 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:23:13,645 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:23:13,648 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:23:13,657 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:23:13,660 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:23:13,662 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:23:13,666 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:23:13,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:23:13,671 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:23:13,672 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:23:13,672 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:23:13,674 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:23:13,675 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:23:13,677 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:23:13,677 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:23:13,678 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:23:13,680 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:23:13,682 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:23:13,683 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:23:13,684 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:23:13,684 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:23:13,685 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:23:13,685 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:23:13,686 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:23:13,687 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:23:13,689 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd8bf81-4fad-48c8-bd1a-5e92f06471ef/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-10-11 02:23:13,733 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:23:13,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:23:13,738 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:23:13,738 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:23:13,739 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:23:13,739 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:23:13,739 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:23:13,739 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:23:13,739 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:23:13,740 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:23:13,741 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:23:13,741 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:23:13,742 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:23:13,742 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:23:13,742 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:23:13,743 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:23:13,743 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:23:13,744 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:23:13,744 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:23:13,744 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:23:13,744 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:23:13,744 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:23:13,745 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:23:13,745 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:23:13,745 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:23:13,745 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:23:13,746 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:23:13,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:23:13,746 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:23:13,748 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:23:13,749 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:23:13,749 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:23:13,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:23:13,749 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:23:13,750 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:23:13,750 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:23:13,750 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_dcd8bf81-4fad-48c8-bd1a-5e92f06471ef/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd8bf81-4fad-48c8-bd1a-5e92f06471ef/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce82bd2068c431a8a58717550c5ca3a1f22bb267 [2021-10-11 02:23:14,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:23:14,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:23:14,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:23:14,090 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:23:14,091 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:23:14,092 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd8bf81-4fad-48c8-bd1a-5e92f06471ef/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/busybox-1.22.0/basename-2.i [2021-10-11 02:23:14,169 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd8bf81-4fad-48c8-bd1a-5e92f06471ef/bin/utaipan-WLngWcDbfI/data/6baed7002/c0657ec87375448aa98fe20de6141367/FLAGb6e729889 [2021-10-11 02:23:14,782 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:23:14,783 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd8bf81-4fad-48c8-bd1a-5e92f06471ef/sv-benchmarks/c/busybox-1.22.0/basename-2.i [2021-10-11 02:23:14,808 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd8bf81-4fad-48c8-bd1a-5e92f06471ef/bin/utaipan-WLngWcDbfI/data/6baed7002/c0657ec87375448aa98fe20de6141367/FLAGb6e729889 [2021-10-11 02:23:14,991 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd8bf81-4fad-48c8-bd1a-5e92f06471ef/bin/utaipan-WLngWcDbfI/data/6baed7002/c0657ec87375448aa98fe20de6141367 [2021-10-11 02:23:14,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:23:14,996 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:23:14,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:23:14,998 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:23:15,001 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:23:15,002 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:23:14" (1/1) ... [2021-10-11 02:23:15,004 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7226de87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:15, skipping insertion in model container [2021-10-11 02:23:15,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:23:14" (1/1) ... [2021-10-11 02:23:15,012 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:23:15,092 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:23:15,713 WARN L226 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_dcd8bf81-4fad-48c8-bd1a-5e92f06471ef/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2021-10-11 02:23:15,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:23:15,813 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) [2021-10-11 02:23:15,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@33a45331 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:15, skipping insertion in model container [2021-10-11 02:23:15,814 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:23:15,815 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-11 02:23:15,818 INFO L168 Benchmark]: Toolchain (without parser) took 820.85 ms. Allocated memory is still 98.6 MB. Free memory was 55.0 MB in the beginning and 63.0 MB in the end (delta: -7.9 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:15,819 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 98.6 MB. Free memory is still 74.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:23:15,821 INFO L168 Benchmark]: CACSL2BoogieTranslator took 817.62 ms. Allocated memory is still 98.6 MB. Free memory was 54.8 MB in the beginning and 63.0 MB in the end (delta: -8.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:15,823 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 98.6 MB. Free memory is still 74.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 817.62 ms. Allocated memory is still 98.6 MB. Free memory was 54.8 MB in the beginning and 63.0 MB in the end (delta: -8.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1515]: 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... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:23:18,177 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:23:18,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:23:18,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:23:18,227 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:23:18,228 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:23:18,231 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:23:18,240 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:23:18,244 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:23:18,252 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:23:18,253 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:23:18,255 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:23:18,259 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:23:18,262 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:23:18,264 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:23:18,265 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:23:18,267 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:23:18,268 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:23:18,271 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:23:18,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:23:18,283 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:23:18,285 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:23:18,287 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:23:18,289 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:23:18,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:23:18,297 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:23:18,297 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:23:18,301 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:23:18,303 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:23:18,305 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:23:18,305 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:23:18,306 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:23:18,309 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:23:18,309 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:23:18,311 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:23:18,312 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:23:18,313 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:23:18,313 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:23:18,313 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:23:18,316 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:23:18,317 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:23:18,318 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd8bf81-4fad-48c8-bd1a-5e92f06471ef/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-10-11 02:23:18,368 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:23:18,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:23:18,370 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:23:18,370 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:23:18,370 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:23:18,371 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:23:18,371 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:23:18,371 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:23:18,371 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:23:18,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:23:18,374 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:23:18,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:23:18,375 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:23:18,375 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:23:18,375 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:23:18,375 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 02:23:18,375 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 02:23:18,376 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:23:18,376 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:23:18,376 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:23:18,376 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:23:18,377 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 02:23:18,377 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:23:18,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:23:18,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:23:18,378 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:23:18,378 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:23:18,378 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-11 02:23:18,378 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 02:23:18,378 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:23:18,379 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:23:18,379 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:23:18,379 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_dcd8bf81-4fad-48c8-bd1a-5e92f06471ef/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd8bf81-4fad-48c8-bd1a-5e92f06471ef/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce82bd2068c431a8a58717550c5ca3a1f22bb267 [2021-10-11 02:23:18,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:23:18,777 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:23:18,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:23:18,781 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:23:18,785 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:23:18,786 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd8bf81-4fad-48c8-bd1a-5e92f06471ef/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/busybox-1.22.0/basename-2.i [2021-10-11 02:23:18,880 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd8bf81-4fad-48c8-bd1a-5e92f06471ef/bin/utaipan-WLngWcDbfI/data/4ca219a76/3ec87427ded14f2e891b69e0bd6f0b80/FLAGe7aa2ea20 [2021-10-11 02:23:19,649 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:23:19,650 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd8bf81-4fad-48c8-bd1a-5e92f06471ef/sv-benchmarks/c/busybox-1.22.0/basename-2.i [2021-10-11 02:23:19,677 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd8bf81-4fad-48c8-bd1a-5e92f06471ef/bin/utaipan-WLngWcDbfI/data/4ca219a76/3ec87427ded14f2e891b69e0bd6f0b80/FLAGe7aa2ea20 [2021-10-11 02:23:19,828 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd8bf81-4fad-48c8-bd1a-5e92f06471ef/bin/utaipan-WLngWcDbfI/data/4ca219a76/3ec87427ded14f2e891b69e0bd6f0b80 [2021-10-11 02:23:19,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:23:19,833 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:23:19,834 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:23:19,834 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:23:19,838 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:23:19,839 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:23:19" (1/1) ... [2021-10-11 02:23:19,841 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14b489e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:19, skipping insertion in model container [2021-10-11 02:23:19,841 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:23:19" (1/1) ... [2021-10-11 02:23:19,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:23:19,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:23:20,581 WARN L226 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_dcd8bf81-4fad-48c8-bd1a-5e92f06471ef/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2021-10-11 02:23:20,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:23:20,673 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-11 02:23:20,686 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:23:20,744 WARN L226 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_dcd8bf81-4fad-48c8-bd1a-5e92f06471ef/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2021-10-11 02:23:20,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:23:20,801 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:23:20,856 WARN L226 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_dcd8bf81-4fad-48c8-bd1a-5e92f06471ef/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2021-10-11 02:23:20,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:23:21,157 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:23:21,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:21 WrapperNode [2021-10-11 02:23:21,158 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:23:21,160 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:23:21,160 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:23:21,160 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:23:21,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:21" (1/1) ... [2021-10-11 02:23:21,238 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:21" (1/1) ... [2021-10-11 02:23:21,293 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:23:21,306 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:23:21,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:23:21,307 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:23:21,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:21" (1/1) ... [2021-10-11 02:23:21,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:21" (1/1) ... [2021-10-11 02:23:21,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:21" (1/1) ... [2021-10-11 02:23:21,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:21" (1/1) ... [2021-10-11 02:23:21,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:21" (1/1) ... [2021-10-11 02:23:21,368 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:21" (1/1) ... [2021-10-11 02:23:21,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:21" (1/1) ... [2021-10-11 02:23:21,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:23:21,390 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:23:21,391 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:23:21,391 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:23:21,392 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:21" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd8bf81-4fad-48c8-bd1a-5e92f06471ef/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:23:21,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-11 02:23:21,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-11 02:23:21,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:23:21,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-11 02:23:21,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-11 02:23:21,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:23:21,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-11 02:23:21,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-11 02:23:21,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-10-11 02:23:21,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-11 02:23:21,531 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-10-11 02:23:21,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-11 02:23:21,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:23:21,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:23:22,770 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:23:22,770 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-10-11 02:23:22,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:22 BoogieIcfgContainer [2021-10-11 02:23:22,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:23:22,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:23:22,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:23:22,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:23:22,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:23:19" (1/3) ... [2021-10-11 02:23:22,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b509ac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:23:22, skipping insertion in model container [2021-10-11 02:23:22,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:21" (2/3) ... [2021-10-11 02:23:22,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b509ac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:23:22, skipping insertion in model container [2021-10-11 02:23:22,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:22" (3/3) ... [2021-10-11 02:23:22,780 INFO L111 eAbstractionObserver]: Analyzing ICFG basename-2.i [2021-10-11 02:23:22,795 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:23:22,800 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:23:22,811 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:23:22,848 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:23:22,849 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:23:22,849 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:23:22,849 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:23:22,849 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:23:22,849 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:23:22,850 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:23:22,850 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:23:22,874 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states. [2021-10-11 02:23:22,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-11 02:23:22,887 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:22,887 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:22,888 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:22,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:22,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1383985347, now seen corresponding path program 1 times [2021-10-11 02:23:22,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:23:22,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2108858812] [2021-10-11 02:23:22,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd8bf81-4fad-48c8-bd1a-5e92f06471ef/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2021-10-11 02:23:23,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:23,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-11 02:23:23,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:23:23,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:23,304 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:23:23,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2108858812] [2021-10-11 02:23:23,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:23,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:23,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760370987] [2021-10-11 02:23:23,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:23:23,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:23:23,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:23:23,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:23:23,327 INFO L87 Difference]: Start difference. First operand 77 states. Second operand 2 states. [2021-10-11 02:23:23,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:23,353 INFO L93 Difference]: Finished difference Result 150 states and 238 transitions. [2021-10-11 02:23:23,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:23:23,354 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2021-10-11 02:23:23,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:23,363 INFO L225 Difference]: With dead ends: 150 [2021-10-11 02:23:23,364 INFO L226 Difference]: Without dead ends: 26 [2021-10-11 02:23:23,367 INFO L677 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 [2021-10-11 02:23:23,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-11 02:23:23,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-10-11 02:23:23,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-10-11 02:23:23,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2021-10-11 02:23:23,402 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 19 [2021-10-11 02:23:23,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:23,402 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2021-10-11 02:23:23,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:23:23,403 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2021-10-11 02:23:23,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-11 02:23:23,403 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:23,404 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:23,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 02:23:23,621 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:23,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:23,622 INFO L82 PathProgramCache]: Analyzing trace with hash -502200470, now seen corresponding path program 1 times [2021-10-11 02:23:23,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:23:23,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1628845082] [2021-10-11 02:23:23,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd8bf81-4fad-48c8-bd1a-5e92f06471ef/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2021-10-11 02:23:23,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:23,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:23:23,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:23:23,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:23,970 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:23:23,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1628845082] [2021-10-11 02:23:23,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:23,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:23:23,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404405848] [2021-10-11 02:23:23,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:23,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:23:23,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:23,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:23,976 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 3 states. [2021-10-11 02:23:24,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:24,009 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2021-10-11 02:23:24,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:24,011 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2021-10-11 02:23:24,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:24,013 INFO L225 Difference]: With dead ends: 50 [2021-10-11 02:23:24,013 INFO L226 Difference]: Without dead ends: 28 [2021-10-11 02:23:24,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:24,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-11 02:23:24,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2021-10-11 02:23:24,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 02:23:24,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-10-11 02:23:24,028 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 19 [2021-10-11 02:23:24,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:24,029 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-10-11 02:23:24,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:24,029 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-10-11 02:23:24,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-11 02:23:24,030 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:24,030 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:24,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2021-10-11 02:23:24,252 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:24,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:24,253 INFO L82 PathProgramCache]: Analyzing trace with hash 110313256, now seen corresponding path program 1 times [2021-10-11 02:23:24,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:23:24,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1384039972] [2021-10-11 02:23:24,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd8bf81-4fad-48c8-bd1a-5e92f06471ef/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2021-10-11 02:23:24,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:24,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:23:24,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:23:24,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:24,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:23:24,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:24,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1384039972] [2021-10-11 02:23:24,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1269065276] [2021-10-11 02:23:24,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd8bf81-4fad-48c8-bd1a-5e92f06471ef/bin/utaipan-WLngWcDbfI/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt [2021-10-11 02:23:25,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:25,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:23:25,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:23:25,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:23:25,040 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:23:25,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-11 02:23:25,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2021-10-11 02:23:25,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702337042] [2021-10-11 02:23:25,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:25,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:23:25,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:25,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:23:25,053 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 3 states. [2021-10-11 02:23:25,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:25,072 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2021-10-11 02:23:25,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:25,073 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2021-10-11 02:23:25,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:25,076 INFO L225 Difference]: With dead ends: 36 [2021-10-11 02:23:25,076 INFO L226 Difference]: Without dead ends: 26 [2021-10-11 02:23:25,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:23:25,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-11 02:23:25,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-10-11 02:23:25,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-10-11 02:23:25,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2021-10-11 02:23:25,080 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 21 [2021-10-11 02:23:25,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:25,080 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2021-10-11 02:23:25,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:25,080 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2021-10-11 02:23:25,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-11 02:23:25,081 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:25,081 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:25,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3,5 cvc4 --incremental --print-success --lang smt [2021-10-11 02:23:25,502 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:25,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:25,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1105101898, now seen corresponding path program 1 times [2021-10-11 02:23:25,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:23:25,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [559491860] [2021-10-11 02:23:25,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd8bf81-4fad-48c8-bd1a-5e92f06471ef/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2021-10-11 02:23:25,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:25,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:23:25,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:23:25,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:25,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:23:25,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:25,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [559491860] [2021-10-11 02:23:25,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [791819998] [2021-10-11 02:23:25,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd8bf81-4fad-48c8-bd1a-5e92f06471ef/bin/utaipan-WLngWcDbfI/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt [2021-10-11 02:23:26,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:26,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:23:26,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:23:26,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:23:26,325 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:23:26,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-11 02:23:26,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2021-10-11 02:23:26,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86052869] [2021-10-11 02:23:26,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:23:26,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:23:26,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:23:26,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:23:26,327 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 4 states. [2021-10-11 02:23:26,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:26,346 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2021-10-11 02:23:26,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:23:26,347 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2021-10-11 02:23:26,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:26,347 INFO L225 Difference]: With dead ends: 36 [2021-10-11 02:23:26,348 INFO L226 Difference]: Without dead ends: 26 [2021-10-11 02:23:26,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:23:26,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-11 02:23:26,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-10-11 02:23:26,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-10-11 02:23:26,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2021-10-11 02:23:26,351 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 22 [2021-10-11 02:23:26,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:26,352 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2021-10-11 02:23:26,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:23:26,352 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2021-10-11 02:23:26,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-11 02:23:26,352 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:26,353 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:26,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt,6 mathsat -unsat_core_generation=3 [2021-10-11 02:23:26,760 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:26,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:26,760 INFO L82 PathProgramCache]: Analyzing trace with hash -712074888, now seen corresponding path program 1 times [2021-10-11 02:23:26,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:23:26,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1140279884] [2021-10-11 02:23:26,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd8bf81-4fad-48c8-bd1a-5e92f06471ef/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2021-10-11 02:23:27,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:27,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:23:27,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:23:27,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:27,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:23:27,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:27,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1140279884] [2021-10-11 02:23:27,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1598692034] [2021-10-11 02:23:27,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd8bf81-4fad-48c8-bd1a-5e92f06471ef/bin/utaipan-WLngWcDbfI/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt [2021-10-11 02:23:27,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:27,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:23:27,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:23:27,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:27,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:23:27,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:27,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420722222] [2021-10-11 02:23:27,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd8bf81-4fad-48c8-bd1a-5e92f06471ef/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:23:27,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:27,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 02:23:27,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:23:28,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:23:28,050 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:23:28,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2021-10-11 02:23:28,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 4, 4, 4] total 9 [2021-10-11 02:23:28,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551728213] [2021-10-11 02:23:28,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:23:28,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:23:28,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:23:28,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:23:28,055 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 5 states. [2021-10-11 02:23:28,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:28,250 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2021-10-11 02:23:28,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:23:28,252 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2021-10-11 02:23:28,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:28,252 INFO L225 Difference]: With dead ends: 44 [2021-10-11 02:23:28,253 INFO L226 Difference]: Without dead ends: 30 [2021-10-11 02:23:28,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-11 02:23:28,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-11 02:23:28,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2021-10-11 02:23:28,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 02:23:28,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2021-10-11 02:23:28,257 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 22 [2021-10-11 02:23:28,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:28,258 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2021-10-11 02:23:28,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:23:28,258 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2021-10-11 02:23:28,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-11 02:23:28,259 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:28,259 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:28,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt,8 mathsat -unsat_core_generation=3,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:23:28,864 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:28,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:28,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1102731903, now seen corresponding path program 1 times [2021-10-11 02:23:28,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:23:28,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [849463160] [2021-10-11 02:23:28,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd8bf81-4fad-48c8-bd1a-5e92f06471ef/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2021-10-11 02:23:29,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:29,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:23:29,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:23:29,171 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:23:29,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:23:29,221 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:23:29,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [849463160] [2021-10-11 02:23:29,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1887934505] [2021-10-11 02:23:29,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd8bf81-4fad-48c8-bd1a-5e92f06471ef/bin/utaipan-WLngWcDbfI/cvc4 Starting monitored process 12 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4 --incremental --print-success --lang smt [2021-10-11 02:23:29,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:29,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:23:29,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:23:29,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:23:29,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:23:29,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:23:29,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512776956] [2021-10-11 02:23:29,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd8bf81-4fad-48c8-bd1a-5e92f06471ef/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:23:30,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:30,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:23:30,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:23:30,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:23:30,135 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:23:30,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2021-10-11 02:23:30,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4, 4, 4] total 7 [2021-10-11 02:23:30,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398966328] [2021-10-11 02:23:30,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:30,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:23:30,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:30,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:23:30,136 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 3 states. [2021-10-11 02:23:30,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:30,157 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2021-10-11 02:23:30,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:30,158 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2021-10-11 02:23:30,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:30,159 INFO L225 Difference]: With dead ends: 47 [2021-10-11 02:23:30,159 INFO L226 Difference]: Without dead ends: 29 [2021-10-11 02:23:30,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:23:30,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-11 02:23:30,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2021-10-11 02:23:30,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-10-11 02:23:30,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2021-10-11 02:23:30,163 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 25 [2021-10-11 02:23:30,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:30,163 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2021-10-11 02:23:30,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:30,163 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2021-10-11 02:23:30,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-11 02:23:30,164 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:30,164 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:30,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 mathsat -unsat_core_generation=3,12 cvc4 --incremental --print-success --lang smt [2021-10-11 02:23:30,779 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:30,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:30,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1439677853, now seen corresponding path program 1 times [2021-10-11 02:23:30,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:23:30,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [447330912] [2021-10-11 02:23:30,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd8bf81-4fad-48c8-bd1a-5e92f06471ef/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2021-10-11 02:23:31,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:31,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:23:31,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:23:31,074 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:23:31,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:23:31,115 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:23:31,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [447330912] [2021-10-11 02:23:31,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [314976315] [2021-10-11 02:23:31,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd8bf81-4fad-48c8-bd1a-5e92f06471ef/bin/utaipan-WLngWcDbfI/cvc4 Starting monitored process 15 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with cvc4 --incremental --print-success --lang smt [2021-10-11 02:23:31,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:31,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:23:31,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:23:31,575 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:23:31,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:23:31,604 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:23:31,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921790815] [2021-10-11 02:23:31,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd8bf81-4fad-48c8-bd1a-5e92f06471ef/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:23:31,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:31,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:23:31,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:23:31,929 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 39 treesize of output 37 [2021-10-11 02:23:31,937 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-10-11 02:23:32,002 INFO L625 ElimStorePlain]: treesize reduction 22, result has 46.3 percent of original size [2021-10-11 02:23:32,014 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:23:32,014 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:24, output treesize:11 [2021-10-11 02:23:32,163 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-11 02:23:32,164 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:23:32,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2021-10-11 02:23:32,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4, 4, 4] total 7 [2021-10-11 02:23:32,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843325338] [2021-10-11 02:23:32,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:32,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:23:32,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:32,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:23:32,170 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 3 states. [2021-10-11 02:23:32,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:32,177 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2021-10-11 02:23:32,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:32,178 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2021-10-11 02:23:32,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:32,178 INFO L225 Difference]: With dead ends: 28 [2021-10-11 02:23:32,178 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:23:32,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:23:32,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:23:32,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:23:32,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:23:32,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:23:32,181 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2021-10-11 02:23:32,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:32,181 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:23:32,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:32,182 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:23:32,182 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:23:32,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,14 mathsat -unsat_core_generation=3,15 cvc4 --incremental --print-success --lang smt [2021-10-11 02:23:32,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:23:32,957 INFO L262 CegarLoopResult]: For program point L1505(line 1505) no Hoare annotation was computed. [2021-10-11 02:23:32,958 INFO L265 CegarLoopResult]: At program point L1439(lines 1421 1440) the Hoare annotation is: true [2021-10-11 02:23:32,958 INFO L262 CegarLoopResult]: For program point L1505-2(line 1505) no Hoare annotation was computed. [2021-10-11 02:23:32,958 INFO L265 CegarLoopResult]: At program point L1456(lines 1441 1457) the Hoare annotation is: true [2021-10-11 02:23:32,959 INFO L262 CegarLoopResult]: For program point L1357(lines 1357 1377) no Hoare annotation was computed. [2021-10-11 02:23:32,959 INFO L262 CegarLoopResult]: For program point L1357-1(lines 1357 1377) no Hoare annotation was computed. [2021-10-11 02:23:32,959 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:23:32,959 INFO L262 CegarLoopResult]: For program point L1606-2(lines 1606 1613) no Hoare annotation was computed. [2021-10-11 02:23:32,961 INFO L258 CegarLoopResult]: At program point L1606-3(lines 1606 1613) the Hoare annotation is: (and (= |#t~string44.offset| (_ bv0 32)) (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond) (bvsge ULTIMATE.start_main_~argc~0 (_ bv1 32)) (= (_ bv0 32) |#t~string45.offset|) (bvsle ULTIMATE.start_main_~argc~0 (_ bv10000 32)) (not (= |#t~string44.base| |#t~string45.base|))) [2021-10-11 02:23:32,961 INFO L262 CegarLoopResult]: For program point L1606-4(lines 1606 1613) no Hoare annotation was computed. [2021-10-11 02:23:32,962 INFO L265 CegarLoopResult]: At program point L1590(lines 1586 1591) the Hoare annotation is: true [2021-10-11 02:23:32,962 INFO L262 CegarLoopResult]: For program point L1491(lines 1491 1492) no Hoare annotation was computed. [2021-10-11 02:23:32,962 INFO L262 CegarLoopResult]: For program point L1359(lines 1359 1376) no Hoare annotation was computed. [2021-10-11 02:23:32,962 INFO L262 CegarLoopResult]: For program point L1343(line 1343) no Hoare annotation was computed. [2021-10-11 02:23:32,962 INFO L262 CegarLoopResult]: For program point L1343-2(line 1343) no Hoare annotation was computed. [2021-10-11 02:23:32,962 INFO L262 CegarLoopResult]: For program point L1410(lines 1410 1411) no Hoare annotation was computed. [2021-10-11 02:23:32,963 INFO L262 CegarLoopResult]: For program point L1427(lines 1427 1436) no Hoare annotation was computed. [2021-10-11 02:23:32,963 INFO L262 CegarLoopResult]: For program point L1427-2(lines 1422 1440) no Hoare annotation was computed. [2021-10-11 02:23:32,963 INFO L265 CegarLoopResult]: At program point L1510(lines 1497 1511) the Hoare annotation is: true [2021-10-11 02:23:32,963 INFO L262 CegarLoopResult]: For program point L1362(lines 1362 1375) no Hoare annotation was computed. [2021-10-11 02:23:32,963 INFO L262 CegarLoopResult]: For program point L8(lines 8 10) no Hoare annotation was computed. [2021-10-11 02:23:32,963 INFO L262 CegarLoopResult]: For program point L8-1(lines 8 10) no Hoare annotation was computed. [2021-10-11 02:23:32,964 INFO L265 CegarLoopResult]: At program point L1478(lines 1462 1479) the Hoare annotation is: true [2021-10-11 02:23:32,964 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:23:32,964 INFO L265 CegarLoopResult]: At program point L1495(lines 1480 1496) the Hoare annotation is: true [2021-10-11 02:23:32,964 INFO L262 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2021-10-11 02:23:32,964 INFO L262 CegarLoopResult]: For program point L1611-2(lines 1611 1612) no Hoare annotation was computed. [2021-10-11 02:23:32,964 INFO L258 CegarLoopResult]: At program point L1611-3(lines 1611 1612) the Hoare annotation is: (and (= |#t~string44.offset| (_ bv0 32)) (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond) (bvsge ULTIMATE.start_main_~argc~0 (_ bv1 32)) (bvsle ULTIMATE.start_main_~argc~0 (_ bv10000 32)) (= (_ bv0 32) |#t~string45.offset|) (not (= |#t~string44.base| |#t~string45.base|))) [2021-10-11 02:23:32,964 INFO L262 CegarLoopResult]: For program point L9-2(line 9) no Hoare annotation was computed. [2021-10-11 02:23:32,965 INFO L262 CegarLoopResult]: For program point L1446(lines 1446 1453) no Hoare annotation was computed. [2021-10-11 02:23:32,965 INFO L262 CegarLoopResult]: For program point L1446-1(lines 1446 1453) no Hoare annotation was computed. [2021-10-11 02:23:32,965 INFO L265 CegarLoopResult]: At program point L1347(lines 1338 1350) the Hoare annotation is: true [2021-10-11 02:23:32,965 INFO L262 CegarLoopResult]: For program point L1364(lines 1364 1374) no Hoare annotation was computed. [2021-10-11 02:23:32,965 INFO L262 CegarLoopResult]: For program point L1447-1(lines 1447 1453) no Hoare annotation was computed. [2021-10-11 02:23:32,965 INFO L262 CegarLoopResult]: For program point L1447-3(lines 1447 1453) no Hoare annotation was computed. [2021-10-11 02:23:32,965 INFO L265 CegarLoopResult]: At program point L1447-4(lines 1447 1453) the Hoare annotation is: true [2021-10-11 02:23:32,966 INFO L262 CegarLoopResult]: For program point L1596-2(lines 1596 1597) no Hoare annotation was computed. [2021-10-11 02:23:32,966 INFO L258 CegarLoopResult]: At program point L1596-3(lines 1596 1597) the Hoare annotation is: (and (= |#t~string44.offset| (_ bv0 32)) (= (_ bv0 32) |#t~string45.offset|) (not (= |#t~string44.base| |#t~string45.base|))) [2021-10-11 02:23:32,966 INFO L262 CegarLoopResult]: For program point L1596-4(lines 1596 1597) no Hoare annotation was computed. [2021-10-11 02:23:32,966 INFO L262 CegarLoopResult]: For program point L1431(lines 1431 1434) no Hoare annotation was computed. [2021-10-11 02:23:32,967 INFO L262 CegarLoopResult]: For program point L1431-2(lines 1430 1436) no Hoare annotation was computed. [2021-10-11 02:23:32,967 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-11 02:23:32,967 INFO L262 CegarLoopResult]: For program point L1432(line 1432) no Hoare annotation was computed. [2021-10-11 02:23:32,967 INFO L262 CegarLoopResult]: For program point L1432-2(line 1432) no Hoare annotation was computed. [2021-10-11 02:23:32,967 INFO L262 CegarLoopResult]: For program point L1482(lines 1482 1494) no Hoare annotation was computed. [2021-10-11 02:23:32,967 INFO L262 CegarLoopResult]: For program point L1482-1(lines 1482 1494) no Hoare annotation was computed. [2021-10-11 02:23:32,967 INFO L262 CegarLoopResult]: For program point L1449(lines 1449 1450) no Hoare annotation was computed. [2021-10-11 02:23:32,968 INFO L262 CegarLoopResult]: For program point L1400(lines 1400 1413) no Hoare annotation was computed. [2021-10-11 02:23:32,968 INFO L262 CegarLoopResult]: For program point L1466-2(lines 1466 1477) no Hoare annotation was computed. [2021-10-11 02:23:32,968 INFO L262 CegarLoopResult]: For program point L1367(lines 1367 1373) no Hoare annotation was computed. [2021-10-11 02:23:32,968 INFO L262 CegarLoopResult]: For program point L1400-1(lines 1400 1413) no Hoare annotation was computed. [2021-10-11 02:23:32,968 INFO L265 CegarLoopResult]: At program point L1466-3(lines 1466 1477) the Hoare annotation is: true [2021-10-11 02:23:32,968 INFO L262 CegarLoopResult]: For program point L1334(lines 1334 1392) no Hoare annotation was computed. [2021-10-11 02:23:32,969 INFO L262 CegarLoopResult]: For program point L1466-4(lines 1466 1477) no Hoare annotation was computed. [2021-10-11 02:23:32,969 INFO L262 CegarLoopResult]: For program point L1334-1(lines 1325 1420) no Hoare annotation was computed. [2021-10-11 02:23:32,969 INFO L262 CegarLoopResult]: For program point L1615-2(lines 1615 1616) no Hoare annotation was computed. [2021-10-11 02:23:32,970 INFO L265 CegarLoopResult]: At program point L1615-3(lines 1615 1616) the Hoare annotation is: true [2021-10-11 02:23:32,970 INFO L262 CegarLoopResult]: For program point L1615-4(lines 1615 1616) no Hoare annotation was computed. [2021-10-11 02:23:32,970 INFO L262 CegarLoopResult]: For program point L1351-1(lines 1351 1385) no Hoare annotation was computed. [2021-10-11 02:23:32,971 INFO L262 CegarLoopResult]: For program point L1484(lines 1484 1493) no Hoare annotation was computed. [2021-10-11 02:23:32,971 INFO L262 CegarLoopResult]: For program point L1501-1(lines 1501 1509) no Hoare annotation was computed. [2021-10-11 02:23:32,971 INFO L262 CegarLoopResult]: For program point L1435-1(line 1435) no Hoare annotation was computed. [2021-10-11 02:23:32,971 INFO L265 CegarLoopResult]: At program point L1501-3(lines 1501 1509) the Hoare annotation is: true [2021-10-11 02:23:32,971 INFO L262 CegarLoopResult]: For program point L1369(lines 1369 1372) no Hoare annotation was computed. [2021-10-11 02:23:32,971 INFO L262 CegarLoopResult]: For program point L1501-4(lines 1501 1509) no Hoare annotation was computed. [2021-10-11 02:23:32,971 INFO L265 CegarLoopResult]: At program point L1419(lines 1324 1420) the Hoare annotation is: true [2021-10-11 02:23:32,972 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-11 02:23:32,972 INFO L262 CegarLoopResult]: For program point L1469(lines 1469 1474) no Hoare annotation was computed. [2021-10-11 02:23:32,972 INFO L262 CegarLoopResult]: For program point L1403(lines 1403 1412) no Hoare annotation was computed. [2021-10-11 02:23:32,972 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 1371) no Hoare annotation was computed. [2021-10-11 02:23:32,972 INFO L262 CegarLoopResult]: For program point L1387(lines 1387 1391) no Hoare annotation was computed. [2021-10-11 02:23:32,972 INFO L262 CegarLoopResult]: For program point L1371(line 1371) no Hoare annotation was computed. [2021-10-11 02:23:32,973 INFO L262 CegarLoopResult]: For program point L1338(lines 1338 1350) no Hoare annotation was computed. [2021-10-11 02:23:32,973 INFO L262 CegarLoopResult]: For program point L1338-2(lines 1335 1392) no Hoare annotation was computed. [2021-10-11 02:23:32,974 INFO L262 CegarLoopResult]: For program point L1504(lines 1504 1507) no Hoare annotation was computed. [2021-10-11 02:23:32,974 INFO L262 CegarLoopResult]: For program point L1471(lines 1471 1472) no Hoare annotation was computed. [2021-10-11 02:23:32,974 INFO L265 CegarLoopResult]: At program point L1620(lines 1592 1621) the Hoare annotation is: true [2021-10-11 02:23:33,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:23:33 BoogieIcfgContainer [2021-10-11 02:23:33,008 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:23:33,009 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:23:33,009 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:23:33,010 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:23:33,010 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:22" (3/4) ... [2021-10-11 02:23:33,014 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:23:33,042 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 33 nodes and edges [2021-10-11 02:23:33,043 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-10-11 02:23:33,044 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-11 02:23:33,045 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:23:33,046 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:23:33,047 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:23:33,149 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd8bf81-4fad-48c8-bd1a-5e92f06471ef/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:23:33,149 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:23:33,150 INFO L168 Benchmark]: Toolchain (without parser) took 13317.06 ms. Allocated memory was 58.7 MB in the beginning and 180.4 MB in the end (delta: 121.6 MB). Free memory was 35.7 MB in the beginning and 118.8 MB in the end (delta: -83.1 MB). Peak memory consumption was 38.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:33,150 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 58.7 MB. Free memory is still 40.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:23:33,151 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1324.27 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 35.6 MB in the beginning and 29.2 MB in the end (delta: 6.3 MB). Peak memory consumption was 22.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:33,151 INFO L168 Benchmark]: Boogie Procedure Inliner took 145.47 ms. Allocated memory is still 71.3 MB. Free memory was 29.2 MB in the beginning and 45.6 MB in the end (delta: -16.4 MB). Peak memory consumption was 2.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:33,152 INFO L168 Benchmark]: Boogie Preprocessor took 83.59 ms. Allocated memory is still 71.3 MB. Free memory was 45.6 MB in the beginning and 40.6 MB in the end (delta: 5.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:33,152 INFO L168 Benchmark]: RCFGBuilder took 1381.65 ms. Allocated memory was 71.3 MB in the beginning and 102.8 MB in the end (delta: 31.5 MB). Free memory was 40.6 MB in the beginning and 58.0 MB in the end (delta: -17.4 MB). Peak memory consumption was 33.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:33,153 INFO L168 Benchmark]: TraceAbstraction took 10235.07 ms. Allocated memory was 102.8 MB in the beginning and 180.4 MB in the end (delta: 77.6 MB). Free memory was 58.0 MB in the beginning and 127.2 MB in the end (delta: -69.3 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:33,153 INFO L168 Benchmark]: Witness Printer took 139.97 ms. Allocated memory is still 180.4 MB. Free memory was 127.2 MB in the beginning and 118.8 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:33,156 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 58.7 MB. Free memory is still 40.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1324.27 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 35.6 MB in the beginning and 29.2 MB in the end (delta: 6.3 MB). Peak memory consumption was 22.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 145.47 ms. Allocated memory is still 71.3 MB. Free memory was 29.2 MB in the beginning and 45.6 MB in the end (delta: -16.4 MB). Peak memory consumption was 2.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 83.59 ms. Allocated memory is still 71.3 MB. Free memory was 45.6 MB in the beginning and 40.6 MB in the end (delta: 5.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1381.65 ms. Allocated memory was 71.3 MB in the beginning and 102.8 MB in the end (delta: 31.5 MB). Free memory was 40.6 MB in the beginning and 58.0 MB in the end (delta: -17.4 MB). Peak memory consumption was 33.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10235.07 ms. Allocated memory was 102.8 MB in the beginning and 180.4 MB in the end (delta: 77.6 MB). Free memory was 58.0 MB in the beginning and 127.2 MB in the end (delta: -69.3 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Witness Printer took 139.97 ms. Allocated memory is still 180.4 MB. Free memory was 127.2 MB in the beginning and 118.8 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1371]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 1596]: Loop Invariant Derived loop invariant: ("--" == 0bv32 && 0bv32 == "--") && !("--" == "--") - InvariantResult [Line: 1338]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1606]: Loop Invariant Derived loop invariant: (((("--" == 0bv32 && 1bv32 == cond) && ~bvsge64(argc, 1bv32)) && 0bv32 == "--") && ~bvsle32(argc, 10000bv32)) && !("--" == "--") - InvariantResult [Line: 1447]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1480]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1466]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1615]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1324]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1586]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1421]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1592]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1611]: Loop Invariant Derived loop invariant: (((("--" == 0bv32 && 1bv32 == cond) && ~bvsge64(argc, 1bv32)) && ~bvsle32(argc, 10000bv32)) && 0bv32 == "--") && !("--" == "--") - InvariantResult [Line: 1462]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1497]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1441]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1501]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.9s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 257 SDtfs, 55 SDslu, 145 SDs, 0 SdLazy, 37 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 516 GetRequests, 484 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=77occurred in iteration=0, 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, 7 MinimizatonAttempts, 5 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 16 LocationsWithAnnotation, 16 PreInvPairs, 34 NumberOfFragments, 64 HoareAnnotationTreeSize, 16 FomulaSimplifications, 93 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 16 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 346 NumberOfCodeBlocks, 346 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 514 ConstructedInterpolants, 0 QuantifiedInterpolants, 19730 SizeOfPredicates, 20 NumberOfNonLiveVariables, 2453 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 23 InterpolantComputations, 7 PerfectInterpolantSequences, 20/36 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...