./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/busybox-1.22.0/hostid.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/hostid.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3b6e96321d82dea19b0b24b62173907aded16288 .......................................................................................................................................... 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_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/hostid.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3b6e96321d82dea19b0b24b62173907aded16288 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:01:55,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:01:55,189 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:01:55,249 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:01:55,250 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:01:55,255 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:01:55,257 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:01:55,260 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:01:55,262 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:01:55,263 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:01:55,264 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:01:55,266 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:01:55,266 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:01:55,267 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:01:55,269 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:01:55,271 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:01:55,272 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:01:55,277 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:01:55,279 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:01:55,287 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:01:55,289 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:01:55,291 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:01:55,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:01:55,299 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:01:55,308 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:01:55,309 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:01:55,309 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:01:55,311 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:01:55,312 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:01:55,314 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:01:55,314 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:01:55,315 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:01:55,317 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:01:55,319 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:01:55,321 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:01:55,321 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:01:55,322 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:01:55,322 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:01:55,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:01:55,323 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:01:55,324 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:01:55,325 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2021-10-16 02:01:55,373 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:01:55,374 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:01:55,375 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:01:55,382 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:01:55,382 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:01:55,382 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:01:55,382 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:01:55,383 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:01:55,383 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:01:55,383 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:01:55,384 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:01:55,384 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:01:55,385 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:01:55,385 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:01:55,385 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:01:55,386 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-16 02:01:55,386 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-16 02:01:55,386 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:01:55,386 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-16 02:01:55,387 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:01:55,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:01:55,387 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-16 02:01:55,387 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-16 02:01:55,387 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-16 02:01:55,388 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:01:55,388 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:01:55,388 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:01:55,388 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:01:55,389 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:01:55,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:01:55,389 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:01:55,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:01:55,390 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:01:55,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:01:55,390 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:01:55,390 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:01:55,390 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_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b6e96321d82dea19b0b24b62173907aded16288 [2021-10-16 02:01:55,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:01:55,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:01:55,731 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:01:55,732 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:01:55,733 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:01:55,734 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/busybox-1.22.0/hostid.i [2021-10-16 02:01:55,816 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/data/8c588ae06/a1404daf37d8410283bfcf1d8c98a2dd/FLAG4366ff05f [2021-10-16 02:01:56,548 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:01:56,549 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/sv-benchmarks/c/busybox-1.22.0/hostid.i [2021-10-16 02:01:56,578 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/data/8c588ae06/a1404daf37d8410283bfcf1d8c98a2dd/FLAG4366ff05f [2021-10-16 02:01:56,699 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/data/8c588ae06/a1404daf37d8410283bfcf1d8c98a2dd [2021-10-16 02:01:56,701 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:01:56,703 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:01:56,708 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:01:56,709 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:01:56,712 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:01:56,713 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:01:56" (1/1) ... [2021-10-16 02:01:56,714 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77d399d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:01:56, skipping insertion in model container [2021-10-16 02:01:56,715 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:01:56" (1/1) ... [2021-10-16 02:01:56,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:01:56,813 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:01:57,768 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:01:57,783 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) [2021-10-16 02:01:57,784 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7e3ef05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:01:57, skipping insertion in model container [2021-10-16 02:01:57,784 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:01:57,785 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-16 02:01:57,787 INFO L168 Benchmark]: Toolchain (without parser) took 1083.44 ms. Allocated memory is still 123.7 MB. Free memory was 84.5 MB in the beginning and 89.0 MB in the end (delta: -4.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:01:57,788 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 123.7 MB. Free memory was 94.4 MB in the beginning and 94.4 MB in the end (delta: 30.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:01:57,790 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1076.74 ms. Allocated memory is still 123.7 MB. Free memory was 84.2 MB in the beginning and 89.0 MB in the end (delta: -4.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:01:57,792 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 123.7 MB. Free memory was 94.4 MB in the beginning and 94.4 MB in the end (delta: 30.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1076.74 ms. Allocated memory is still 123.7 MB. Free memory was 84.2 MB in the beginning and 89.0 MB in the end (delta: -4.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1774]: 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 0.2.1-dev-5709675 [2021-10-16 02:02:00,177 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:02:00,179 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:02:00,213 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:02:00,214 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:02:00,216 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:02:00,218 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:02:00,220 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:02:00,223 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:02:00,224 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:02:00,225 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:02:00,227 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:02:00,228 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:02:00,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:02:00,231 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:02:00,233 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:02:00,234 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:02:00,236 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:02:00,246 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:02:00,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:02:00,251 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:02:00,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:02:00,261 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:02:00,262 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:02:00,266 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:02:00,266 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:02:00,267 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:02:00,274 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:02:00,275 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:02:00,277 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:02:00,278 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:02:00,281 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:02:00,283 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:02:00,284 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:02:00,288 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:02:00,288 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:02:00,289 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:02:00,290 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:02:00,290 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:02:00,292 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:02:00,293 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:02:00,294 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf [2021-10-16 02:02:00,345 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:02:00,346 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:02:00,347 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:02:00,348 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:02:00,348 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:02:00,348 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:02:00,349 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:02:00,349 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:02:00,350 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:02:00,352 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-16 02:02:00,353 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-16 02:02:00,354 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:02:00,354 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-16 02:02:00,354 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:02:00,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:02:00,354 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-16 02:02:00,355 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-16 02:02:00,355 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-16 02:02:00,355 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:02:00,355 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:02:00,356 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:02:00,356 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:02:00,356 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:02:00,356 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:02:00,357 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:02:00,357 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:02:00,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:02:00,357 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:02:00,358 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:02:00,358 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:02:00,358 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:02:00,358 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:02:00,359 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:02:00,359 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_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b6e96321d82dea19b0b24b62173907aded16288 [2021-10-16 02:02:00,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:02:00,839 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:02:00,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:02:00,843 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:02:00,844 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:02:00,845 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/busybox-1.22.0/hostid.i [2021-10-16 02:02:00,921 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/data/577d2b68a/519f54b214b04f468f99bd2278809ff9/FLAGbf5b101ad [2021-10-16 02:02:01,615 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:02:01,617 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/sv-benchmarks/c/busybox-1.22.0/hostid.i [2021-10-16 02:02:01,651 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/data/577d2b68a/519f54b214b04f468f99bd2278809ff9/FLAGbf5b101ad [2021-10-16 02:02:01,820 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/data/577d2b68a/519f54b214b04f468f99bd2278809ff9 [2021-10-16 02:02:01,824 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:02:01,827 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:02:01,830 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:02:01,831 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:02:01,835 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:02:01,836 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:02:01" (1/1) ... [2021-10-16 02:02:01,838 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19ede030 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:02:01, skipping insertion in model container [2021-10-16 02:02:01,839 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:02:01" (1/1) ... [2021-10-16 02:02:01,847 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:02:01,939 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:02:03,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:02:03,163 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-16 02:02:03,184 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:02:03,247 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:02:03,273 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:02:03,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:02:03,469 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:02:03,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:02:03 WrapperNode [2021-10-16 02:02:03,472 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:02:03,473 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:02:03,473 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:02:03,473 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:02:03,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:02:03" (1/1) ... [2021-10-16 02:02:03,531 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:02:03" (1/1) ... [2021-10-16 02:02:03,575 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:02:03,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:02:03,576 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:02:03,576 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:02:03,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:02:03" (1/1) ... [2021-10-16 02:02:03,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:02:03" (1/1) ... [2021-10-16 02:02:03,593 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:02:03" (1/1) ... [2021-10-16 02:02:03,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:02:03" (1/1) ... [2021-10-16 02:02:03,611 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:02:03" (1/1) ... [2021-10-16 02:02:03,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:02:03" (1/1) ... [2021-10-16 02:02:03,623 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:02:03" (1/1) ... [2021-10-16 02:02:03,631 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:02:03,632 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:02:03,632 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:02:03,632 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:02:03,633 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:02:03" (1/1) ... [2021-10-16 02:02:03,640 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:02:03,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:02:03,690 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:02:03,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:02:03,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:02:03,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:02:03,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-16 02:02:03,740 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2021-10-16 02:02:03,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-16 02:02:03,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:02:03,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:02:03,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:02:03,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-16 02:02:03,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-16 02:02:04,711 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:02:04,711 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-16 02:02:04,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:02:04 BoogieIcfgContainer [2021-10-16 02:02:04,714 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:02:04,716 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:02:04,716 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:02:04,720 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:02:04,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:02:01" (1/3) ... [2021-10-16 02:02:04,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d1a0a7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:02:04, skipping insertion in model container [2021-10-16 02:02:04,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:02:03" (2/3) ... [2021-10-16 02:02:04,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d1a0a7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:02:04, skipping insertion in model container [2021-10-16 02:02:04,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:02:04" (3/3) ... [2021-10-16 02:02:04,723 INFO L111 eAbstractionObserver]: Analyzing ICFG hostid.i [2021-10-16 02:02:04,730 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:02:04,730 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 37 error locations. [2021-10-16 02:02:04,778 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:02:04,788 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:02:04,788 INFO L340 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2021-10-16 02:02:04,812 INFO L276 IsEmpty]: Start isEmpty. Operand has 90 states, 52 states have (on average 1.9038461538461537) internal successors, (99), 89 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:04,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-16 02:02:04,821 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:02:04,822 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-16 02:02:04,822 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-16 02:02:04,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:02:04,827 INFO L82 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-10-16 02:02:04,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:02:04,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [974797156] [2021-10-16 02:02:04,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:02:04,843 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:02:04,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:02:04,845 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:02:04,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:02:05,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:02:05,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:02:05,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:02:05,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 02:02:05,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:02:05,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:02:05,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:02:05,163 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:02:05,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [974797156] [2021-10-16 02:02:05,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [974797156] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:02:05,165 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:02:05,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 02:02:05,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259784578] [2021-10-16 02:02:05,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:02:05,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:02:05,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:02:05,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:02:05,201 INFO L87 Difference]: Start difference. First operand has 90 states, 52 states have (on average 1.9038461538461537) internal successors, (99), 89 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:05,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:02:05,478 INFO L93 Difference]: Finished difference Result 104 states and 109 transitions. [2021-10-16 02:02:05,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:02:05,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-16 02:02:05,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:02:05,493 INFO L225 Difference]: With dead ends: 104 [2021-10-16 02:02:05,493 INFO L226 Difference]: Without dead ends: 102 [2021-10-16 02:02:05,495 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:02:05,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-10-16 02:02:05,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 86. [2021-10-16 02:02:05,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 51 states have (on average 1.7647058823529411) internal successors, (90), 85 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:05,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2021-10-16 02:02:05,547 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 3 [2021-10-16 02:02:05,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:02:05,548 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2021-10-16 02:02:05,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:05,548 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2021-10-16 02:02:05,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-16 02:02:05,549 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:02:05,549 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-16 02:02:05,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:02:05,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:02:05,771 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-16 02:02:05,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:02:05,772 INFO L82 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-10-16 02:02:05,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:02:05,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [231204137] [2021-10-16 02:02:05,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:02:05,774 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:02:05,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:02:05,775 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:02:05,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:02:05,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:02:05,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:02:05,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:02:05,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 02:02:05,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:02:05,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:02:06,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:02:06,051 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:02:06,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [231204137] [2021-10-16 02:02:06,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [231204137] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:02:06,052 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:02:06,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-16 02:02:06,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703246300] [2021-10-16 02:02:06,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:02:06,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:02:06,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:02:06,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:02:06,055 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:06,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:02:06,384 INFO L93 Difference]: Finished difference Result 85 states and 89 transitions. [2021-10-16 02:02:06,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:02:06,385 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-16 02:02:06,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:02:06,386 INFO L225 Difference]: With dead ends: 85 [2021-10-16 02:02:06,386 INFO L226 Difference]: Without dead ends: 85 [2021-10-16 02:02:06,387 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:02:06,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-10-16 02:02:06,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2021-10-16 02:02:06,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 51 states have (on average 1.7450980392156863) internal successors, (89), 84 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:06,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2021-10-16 02:02:06,395 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 3 [2021-10-16 02:02:06,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:02:06,395 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2021-10-16 02:02:06,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:06,396 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2021-10-16 02:02:06,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 02:02:06,397 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:02:06,397 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 02:02:06,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:02:06,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:02:06,621 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-16 02:02:06,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:02:06,622 INFO L82 PathProgramCache]: Analyzing trace with hash 889446313, now seen corresponding path program 1 times [2021-10-16 02:02:06,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:02:06,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1099932466] [2021-10-16 02:02:06,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:02:06,628 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:02:06,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:02:06,630 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:02:06,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:02:06,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:02:06,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:02:06,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:02:06,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 02:02:06,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:02:06,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:02:07,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:02:07,159 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:02:07,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1099932466] [2021-10-16 02:02:07,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1099932466] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:02:07,159 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:02:07,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-16 02:02:07,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382390153] [2021-10-16 02:02:07,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:02:07,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:02:07,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:02:07,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:02:07,161 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:07,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:02:07,831 INFO L93 Difference]: Finished difference Result 94 states and 99 transitions. [2021-10-16 02:02:07,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:02:07,832 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-16 02:02:07,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:02:07,833 INFO L225 Difference]: With dead ends: 94 [2021-10-16 02:02:07,833 INFO L226 Difference]: Without dead ends: 94 [2021-10-16 02:02:07,833 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 166.2ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:02:07,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-16 02:02:07,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 91. [2021-10-16 02:02:07,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 57 states have (on average 1.6842105263157894) internal successors, (96), 90 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:07,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 96 transitions. [2021-10-16 02:02:07,842 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 96 transitions. Word has length 6 [2021-10-16 02:02:07,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:02:07,842 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 96 transitions. [2021-10-16 02:02:07,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:07,843 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 96 transitions. [2021-10-16 02:02:07,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-16 02:02:07,843 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:02:07,843 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:02:07,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:02:08,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:02:08,044 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-16 02:02:08,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:02:08,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1990005034, now seen corresponding path program 1 times [2021-10-16 02:02:08,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:02:08,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2105987623] [2021-10-16 02:02:08,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:02:08,046 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:02:08,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:02:08,048 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:02:08,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 02:02:08,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:02:08,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:02:08,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:02:08,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:02:08,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:02:08,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:02:08,329 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:02:08,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2105987623] [2021-10-16 02:02:08,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2105987623] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:02:08,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [789010826] [2021-10-16 02:02:08,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:02:08,331 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:02:08,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:02:08,336 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:02:08,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-10-16 02:02:08,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:02:08,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:02:08,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:02:08,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:02:08,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:02:08,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:02:08,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [789010826] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:02:08,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699450187] [2021-10-16 02:02:08,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:02:08,853 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:02:08,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:02:08,856 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:02:08,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-16 02:02:09,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:02:09,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:02:09,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:02:09,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:02:09,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:02:09,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:02:09,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699450187] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:02:09,106 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:02:09,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2021-10-16 02:02:09,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775612234] [2021-10-16 02:02:09,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:02:09,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:02:09,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:02:09,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:02:09,117 INFO L87 Difference]: Start difference. First operand 91 states and 96 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:09,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:02:09,196 INFO L93 Difference]: Finished difference Result 99 states and 103 transitions. [2021-10-16 02:02:09,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:02:09,197 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-16 02:02:09,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:02:09,199 INFO L225 Difference]: With dead ends: 99 [2021-10-16 02:02:09,199 INFO L226 Difference]: Without dead ends: 99 [2021-10-16 02:02:09,199 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.0ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:02:09,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-10-16 02:02:09,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2021-10-16 02:02:09,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 64 states have (on average 1.609375) internal successors, (103), 97 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:09,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 103 transitions. [2021-10-16 02:02:09,206 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 103 transitions. Word has length 13 [2021-10-16 02:02:09,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:02:09,207 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 103 transitions. [2021-10-16 02:02:09,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:09,207 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 103 transitions. [2021-10-16 02:02:09,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-16 02:02:09,208 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:02:09,208 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1] [2021-10-16 02:02:09,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-16 02:02:09,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:02:09,626 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2021-10-16 02:02:09,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:02:09,825 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-16 02:02:09,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:02:09,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1609221679, now seen corresponding path program 1 times [2021-10-16 02:02:09,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:02:09,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1634943246] [2021-10-16 02:02:09,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:02:09,827 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:02:09,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:02:09,828 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:02:09,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-16 02:02:09,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:02:09,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:02:09,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:02:10,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 02:02:10,239 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:02:10,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:02:11,053 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:02:11,053 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:02:11,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1634943246] [2021-10-16 02:02:11,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1634943246] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:02:11,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1539837825] [2021-10-16 02:02:11,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:02:11,054 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:02:11,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:02:11,061 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:02:11,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-10-16 02:02:11,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:02:11,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:02:11,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:02:11,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 02:02:11,612 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:02:11,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:02:11,978 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:02:11,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1539837825] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:02:11,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414721349] [2021-10-16 02:02:11,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:02:11,979 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:02:11,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:02:11,981 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:02:12,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-16 02:02:12,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:02:12,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:02:12,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:02:12,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 02:02:12,341 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:02:12,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:02:12,705 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:02:12,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414721349] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:02:12,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:02:12,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 9 [2021-10-16 02:02:12,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968613792] [2021-10-16 02:02:12,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 02:02:12,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:02:12,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 02:02:12,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:02:12,708 INFO L87 Difference]: Start difference. First operand 98 states and 103 transitions. Second operand has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:13,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:02:13,934 INFO L93 Difference]: Finished difference Result 101 states and 105 transitions. [2021-10-16 02:02:13,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 02:02:13,935 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-16 02:02:13,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:02:13,936 INFO L225 Difference]: With dead ends: 101 [2021-10-16 02:02:13,936 INFO L226 Difference]: Without dead ends: 101 [2021-10-16 02:02:13,937 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 648.3ms TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2021-10-16 02:02:13,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-10-16 02:02:13,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2021-10-16 02:02:13,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 68 states have (on average 1.5441176470588236) internal successors, (105), 100 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:13,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2021-10-16 02:02:13,943 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 14 [2021-10-16 02:02:13,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:02:13,944 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2021-10-16 02:02:13,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:13,944 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2021-10-16 02:02:13,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-16 02:02:13,945 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:02:13,945 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:02:13,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-16 02:02:14,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-10-16 02:02:14,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-16 02:02:14,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:02:14,557 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-16 02:02:14,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:02:14,558 INFO L82 PathProgramCache]: Analyzing trace with hash 388981918, now seen corresponding path program 2 times [2021-10-16 02:02:14,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:02:14,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [922757335] [2021-10-16 02:02:14,559 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:02:14,559 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:02:14,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:02:14,561 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:02:14,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-16 02:02:14,783 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-16 02:02:14,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:02:14,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:02:14,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:02:14,872 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-16 02:02:14,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2021-10-16 02:02:14,910 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-10-16 02:02:14,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:02:14,971 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-10-16 02:02:14,971 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:02:14,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [922757335] [2021-10-16 02:02:14,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [922757335] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:02:14,971 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:02:14,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 02:02:14,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534114009] [2021-10-16 02:02:14,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:02:14,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:02:14,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:02:14,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:02:14,973 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:15,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:02:15,148 INFO L93 Difference]: Finished difference Result 112 states and 117 transitions. [2021-10-16 02:02:15,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:02:15,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-16 02:02:15,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:02:15,150 INFO L225 Difference]: With dead ends: 112 [2021-10-16 02:02:15,151 INFO L226 Difference]: Without dead ends: 112 [2021-10-16 02:02:15,151 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:02:15,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-10-16 02:02:15,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 96. [2021-10-16 02:02:15,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 68 states have (on average 1.4705882352941178) internal successors, (100), 95 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:15,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 100 transitions. [2021-10-16 02:02:15,158 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 100 transitions. Word has length 29 [2021-10-16 02:02:15,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:02:15,158 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 100 transitions. [2021-10-16 02:02:15,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:15,159 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 100 transitions. [2021-10-16 02:02:15,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-16 02:02:15,160 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:02:15,160 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:02:15,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-16 02:02:15,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:02:15,372 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-16 02:02:15,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:02:15,373 INFO L82 PathProgramCache]: Analyzing trace with hash 388981919, now seen corresponding path program 1 times [2021-10-16 02:02:15,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:02:15,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1789301333] [2021-10-16 02:02:15,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:02:15,374 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:02:15,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:02:15,375 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:02:15,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-16 02:02:15,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:02:15,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:02:15,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:02:15,726 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:02:15,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:02:15,960 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:02:15,960 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:02:15,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1789301333] [2021-10-16 02:02:15,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1789301333] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:02:15,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [997317206] [2021-10-16 02:02:15,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:02:15,961 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:02:15,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:02:15,968 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:02:15,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-10-16 02:02:16,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:02:16,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:02:16,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:02:16,641 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:02:16,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:02:16,753 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:02:16,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [997317206] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:02:16,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764180225] [2021-10-16 02:02:16,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:02:16,754 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:02:16,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:02:16,755 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:02:16,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-16 02:02:16,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:02:16,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 02:02:16,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:02:17,112 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:02:17,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:02:17,594 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:02:17,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764180225] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:02:17,594 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:02:17,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 9] total 19 [2021-10-16 02:02:17,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797177639] [2021-10-16 02:02:17,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-16 02:02:17,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:02:17,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-16 02:02:17,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2021-10-16 02:02:17,597 INFO L87 Difference]: Start difference. First operand 96 states and 100 transitions. Second operand has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:18,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:02:18,170 INFO L93 Difference]: Finished difference Result 124 states and 129 transitions. [2021-10-16 02:02:18,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-16 02:02:18,172 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-16 02:02:18,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:02:18,173 INFO L225 Difference]: With dead ends: 124 [2021-10-16 02:02:18,173 INFO L226 Difference]: Without dead ends: 124 [2021-10-16 02:02:18,174 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 677.7ms TimeCoverageRelationStatistics Valid=195, Invalid=405, Unknown=0, NotChecked=0, Total=600 [2021-10-16 02:02:18,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-10-16 02:02:18,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-10-16 02:02:18,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 96 states have (on average 1.34375) internal successors, (129), 123 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:18,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 129 transitions. [2021-10-16 02:02:18,181 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 129 transitions. Word has length 29 [2021-10-16 02:02:18,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:02:18,182 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 129 transitions. [2021-10-16 02:02:18,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:18,182 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 129 transitions. [2021-10-16 02:02:18,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-10-16 02:02:18,184 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:02:18,184 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:02:18,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-10-16 02:02:18,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-16 02:02:18,612 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-10-16 02:02:18,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:02:18,788 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-16 02:02:18,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:02:18,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1981689168, now seen corresponding path program 2 times [2021-10-16 02:02:18,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:02:18,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1041345603] [2021-10-16 02:02:18,790 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:02:18,790 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:02:18,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:02:18,791 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:02:18,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-16 02:02:19,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-16 02:02:19,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:02:19,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:02:19,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:02:19,294 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-10-16 02:02:19,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2021-10-16 02:02:19,302 INFO L388 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 32 treesize of output 30 [2021-10-16 02:02:19,412 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-16 02:02:19,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:02:19,743 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-16 02:02:19,744 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:02:19,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1041345603] [2021-10-16 02:02:19,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1041345603] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:02:19,744 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:02:19,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-16 02:02:19,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277250875] [2021-10-16 02:02:19,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 02:02:19,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:02:19,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 02:02:19,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:02:19,747 INFO L87 Difference]: Start difference. First operand 124 states and 129 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:20,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:02:20,549 INFO L93 Difference]: Finished difference Result 163 states and 170 transitions. [2021-10-16 02:02:20,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:02:20,550 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-10-16 02:02:20,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:02:20,552 INFO L225 Difference]: With dead ends: 163 [2021-10-16 02:02:20,552 INFO L226 Difference]: Without dead ends: 163 [2021-10-16 02:02:20,552 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 367.4ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:02:20,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-16 02:02:20,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 141. [2021-10-16 02:02:20,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 114 states have (on average 1.394736842105263) internal successors, (159), 140 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:20,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 159 transitions. [2021-10-16 02:02:20,560 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 159 transitions. Word has length 49 [2021-10-16 02:02:20,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:02:20,561 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 159 transitions. [2021-10-16 02:02:20,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:20,561 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 159 transitions. [2021-10-16 02:02:20,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-16 02:02:20,563 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:02:20,563 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:02:20,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-16 02:02:20,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:02:20,776 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-16 02:02:20,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:02:20,777 INFO L82 PathProgramCache]: Analyzing trace with hash 2118422360, now seen corresponding path program 1 times [2021-10-16 02:02:20,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:02:20,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1749282358] [2021-10-16 02:02:20,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:02:20,778 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:02:20,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:02:20,780 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:02:20,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-16 02:02:21,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:02:21,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-16 02:02:21,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:02:21,545 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-10-16 02:02:21,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2021-10-16 02:02:21,556 INFO L388 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 35 treesize of output 33 [2021-10-16 02:02:22,183 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-10-16 02:02:22,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 57 [2021-10-16 02:02:22,198 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-16 02:02:22,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 47 [2021-10-16 02:02:22,463 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-16 02:02:22,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:02:25,628 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-10-16 02:02:25,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 34 [2021-10-16 02:02:28,219 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-16 02:02:28,220 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:02:28,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1749282358] [2021-10-16 02:02:28,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1749282358] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:02:28,220 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:02:28,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-16 02:02:28,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096048361] [2021-10-16 02:02:28,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-16 02:02:28,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:02:28,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-16 02:02:28,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=136, Unknown=2, NotChecked=0, Total=182 [2021-10-16 02:02:28,222 INFO L87 Difference]: Start difference. First operand 141 states and 159 transitions. Second operand has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:52,794 WARN L207 SmtUtils]: Spent 12.96 s on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2021-10-16 02:02:56,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:02:56,677 INFO L93 Difference]: Finished difference Result 214 states and 224 transitions. [2021-10-16 02:02:56,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-16 02:02:56,677 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-10-16 02:02:56,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:02:56,679 INFO L225 Difference]: With dead ends: 214 [2021-10-16 02:02:56,679 INFO L226 Difference]: Without dead ends: 214 [2021-10-16 02:02:56,680 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 30165.7ms TimeCoverageRelationStatistics Valid=156, Invalid=348, Unknown=2, NotChecked=0, Total=506 [2021-10-16 02:02:56,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-10-16 02:02:56,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 122. [2021-10-16 02:02:56,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 98 states have (on average 1.2959183673469388) internal successors, (127), 121 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:56,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 127 transitions. [2021-10-16 02:02:56,686 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 127 transitions. Word has length 52 [2021-10-16 02:02:56,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:02:56,687 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 127 transitions. [2021-10-16 02:02:56,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:56,687 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 127 transitions. [2021-10-16 02:02:56,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-16 02:02:56,689 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:02:56,690 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:02:56,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-10-16 02:02:56,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:02:56,906 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-16 02:02:56,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:02:56,907 INFO L82 PathProgramCache]: Analyzing trace with hash -328933539, now seen corresponding path program 1 times [2021-10-16 02:02:56,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:02:56,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [896153257] [2021-10-16 02:02:56,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:02:56,908 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:02:56,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:02:56,909 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:02:56,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-16 02:02:57,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:02:57,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:02:57,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:02:57,520 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-16 02:02:57,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2021-10-16 02:02:57,624 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-16 02:02:57,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 20 [2021-10-16 02:02:57,685 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-16 02:02:57,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:02:57,853 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-16 02:02:57,853 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:02:57,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [896153257] [2021-10-16 02:02:57,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [896153257] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:02:57,853 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:02:57,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 02:02:57,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561697887] [2021-10-16 02:02:57,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:02:57,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:02:57,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:02:57,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:02:57,855 INFO L87 Difference]: Start difference. First operand 122 states and 127 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:58,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:02:58,076 INFO L93 Difference]: Finished difference Result 129 states and 135 transitions. [2021-10-16 02:02:58,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:02:58,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-10-16 02:02:58,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:02:58,078 INFO L225 Difference]: With dead ends: 129 [2021-10-16 02:02:58,078 INFO L226 Difference]: Without dead ends: 129 [2021-10-16 02:02:58,079 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 105 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 96.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:02:58,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-10-16 02:02:58,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 126. [2021-10-16 02:02:58,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 103 states have (on average 1.3106796116504855) internal successors, (135), 125 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:58,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 135 transitions. [2021-10-16 02:02:58,094 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 135 transitions. Word has length 55 [2021-10-16 02:02:58,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:02:58,094 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 135 transitions. [2021-10-16 02:02:58,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:58,095 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 135 transitions. [2021-10-16 02:02:58,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-16 02:02:58,102 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:02:58,102 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:02:58,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-16 02:02:58,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:02:58,303 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-16 02:02:58,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:02:58,303 INFO L82 PathProgramCache]: Analyzing trace with hash -328933538, now seen corresponding path program 1 times [2021-10-16 02:02:58,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:02:58,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [746719907] [2021-10-16 02:02:58,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:02:58,304 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:02:58,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:02:58,309 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:02:58,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-16 02:02:58,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:02:58,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 02:02:58,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:02:59,135 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-10-16 02:02:59,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2021-10-16 02:02:59,164 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-16 02:02:59,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 38 [2021-10-16 02:02:59,738 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-10-16 02:02:59,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 60 [2021-10-16 02:02:59,761 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-10-16 02:02:59,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 48 [2021-10-16 02:03:00,184 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-16 02:03:00,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:03:05,701 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-16 02:03:05,702 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:03:05,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [746719907] [2021-10-16 02:03:05,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [746719907] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:03:05,702 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:03:05,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-10-16 02:03:05,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653492477] [2021-10-16 02:03:05,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-16 02:03:05,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:03:05,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-16 02:03:05,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=97, Unknown=2, NotChecked=0, Total=132 [2021-10-16 02:03:05,703 INFO L87 Difference]: Start difference. First operand 126 states and 135 transitions. Second operand has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:03:19,335 WARN L207 SmtUtils]: Spent 9.20 s on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2021-10-16 02:03:30,505 WARN L207 SmtUtils]: Spent 8.51 s on a formula simplification. DAG size of input: 40 DAG size of output: 32 [2021-10-16 02:03:32,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:03:32,716 INFO L93 Difference]: Finished difference Result 252 states and 264 transitions. [2021-10-16 02:03:32,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-16 02:03:32,718 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-10-16 02:03:32,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:03:32,720 INFO L225 Difference]: With dead ends: 252 [2021-10-16 02:03:32,720 INFO L226 Difference]: Without dead ends: 252 [2021-10-16 02:03:32,721 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 26776.6ms TimeCoverageRelationStatistics Valid=157, Invalid=303, Unknown=2, NotChecked=0, Total=462 [2021-10-16 02:03:32,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-10-16 02:03:32,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 144. [2021-10-16 02:03:32,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 121 states have (on average 1.3140495867768596) internal successors, (159), 143 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:03:32,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 159 transitions. [2021-10-16 02:03:32,728 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 159 transitions. Word has length 55 [2021-10-16 02:03:32,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:03:32,729 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 159 transitions. [2021-10-16 02:03:32,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:03:32,729 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 159 transitions. [2021-10-16 02:03:32,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-10-16 02:03:32,731 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:03:32,731 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:03:32,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-16 02:03:32,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:03:32,945 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-16 02:03:32,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:03:32,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1856332990, now seen corresponding path program 1 times [2021-10-16 02:03:32,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:03:32,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [603516287] [2021-10-16 02:03:32,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:03:32,946 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:03:32,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:03:32,947 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:03:32,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-16 02:03:33,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:03:33,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 02:03:33,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:03:33,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 02:03:33,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-10-16 02:03:33,909 INFO L354 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2021-10-16 02:03:33,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 29 [2021-10-16 02:03:34,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-10-16 02:03:34,034 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-16 02:03:34,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:03:36,115 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~mem_track~0.base (_ BitVec 32))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32)))) (select (select (store |c_#memory_$Pointer$.base| ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.base| ULTIMATE.start_main_~mem_track~0.base) (bvadd c_ULTIMATE.start_main_~mem_track~0.offset .cse0) |c_ULTIMATE.start_main_#t~mem127.base|)) c_ULTIMATE.start_main_~argv~0.base) (bvadd c_ULTIMATE.start_main_~argv~0.offset .cse0)))))))))) is different from false [2021-10-16 02:03:38,131 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~mem_track~0.base (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32)))) (let ((.cse1 (bvadd c_ULTIMATE.start_main_~argv~0.offset .cse0))) (select (select (store |c_#memory_$Pointer$.base| ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.base| ULTIMATE.start_main_~mem_track~0.base) (bvadd c_ULTIMATE.start_main_~mem_track~0.offset .cse0) (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse1))) c_ULTIMATE.start_main_~argv~0.base) .cse1))))))) (_ bv1 1)))) is different from false [2021-10-16 02:03:38,258 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-16 02:03:38,258 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:03:38,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [603516287] [2021-10-16 02:03:38,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [603516287] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:03:38,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:03:38,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2021-10-16 02:03:38,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070748533] [2021-10-16 02:03:38,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-16 02:03:38,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:03:38,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-16 02:03:38,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=65, Unknown=2, NotChecked=34, Total=132 [2021-10-16 02:03:38,260 INFO L87 Difference]: Start difference. First operand 144 states and 159 transitions. Second operand has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:03:54,738 WARN L207 SmtUtils]: Spent 14.22 s on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2021-10-16 02:04:07,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:04:07,487 INFO L93 Difference]: Finished difference Result 141 states and 155 transitions. [2021-10-16 02:04:07,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 02:04:07,488 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-10-16 02:04:07,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:04:07,489 INFO L225 Difference]: With dead ends: 141 [2021-10-16 02:04:07,490 INFO L226 Difference]: Without dead ends: 141 [2021-10-16 02:04:07,490 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 103 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 28649.9ms TimeCoverageRelationStatistics Valid=51, Invalid=108, Unknown=5, NotChecked=46, Total=210 [2021-10-16 02:04:07,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-10-16 02:04:07,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2021-10-16 02:04:07,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 121 states have (on average 1.28099173553719) internal successors, (155), 140 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:04:07,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 155 transitions. [2021-10-16 02:04:07,496 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 155 transitions. Word has length 58 [2021-10-16 02:04:07,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:04:07,497 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 155 transitions. [2021-10-16 02:04:07,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:04:07,497 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 155 transitions. [2021-10-16 02:04:07,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-10-16 02:04:07,499 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:04:07,499 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:04:07,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-16 02:04:07,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:04:07,713 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-16 02:04:07,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:04:07,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1856332991, now seen corresponding path program 1 times [2021-10-16 02:04:07,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:04:07,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1632310827] [2021-10-16 02:04:07,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:04:07,715 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:04:07,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:04:07,715 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:04:07,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-16 02:04:08,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:04:08,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 02:04:08,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:04:08,405 INFO L388 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 11 treesize of output 9 [2021-10-16 02:04:08,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 02:04:08,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-10-16 02:04:08,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-16 02:04:08,698 INFO L354 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2021-10-16 02:04:08,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 58 [2021-10-16 02:04:08,746 INFO L354 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2021-10-16 02:04:08,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2021-10-16 02:04:08,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 31 [2021-10-16 02:04:08,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 12 [2021-10-16 02:04:08,886 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-16 02:04:08,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:04:20,585 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-16 02:04:20,585 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:04:20,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1632310827] [2021-10-16 02:04:20,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1632310827] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:04:20,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:04:20,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-16 02:04:20,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29357091] [2021-10-16 02:04:20,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-16 02:04:20,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:04:20,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-16 02:04:20,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=79, Unknown=2, NotChecked=0, Total=110 [2021-10-16 02:04:20,587 INFO L87 Difference]: Start difference. First operand 141 states and 155 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:04:21,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:04:21,367 INFO L93 Difference]: Finished difference Result 140 states and 153 transitions. [2021-10-16 02:04:21,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 02:04:21,368 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-10-16 02:04:21,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:04:21,369 INFO L225 Difference]: With dead ends: 140 [2021-10-16 02:04:21,370 INFO L226 Difference]: Without dead ends: 140 [2021-10-16 02:04:21,370 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 11245.4ms TimeCoverageRelationStatistics Valid=53, Invalid=127, Unknown=2, NotChecked=0, Total=182 [2021-10-16 02:04:21,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-16 02:04:21,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2021-10-16 02:04:21,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 121 states have (on average 1.2644628099173554) internal successors, (153), 139 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:04:21,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 153 transitions. [2021-10-16 02:04:21,376 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 153 transitions. Word has length 58 [2021-10-16 02:04:21,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:04:21,376 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 153 transitions. [2021-10-16 02:04:21,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:04:21,377 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 153 transitions. [2021-10-16 02:04:21,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-16 02:04:21,378 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:04:21,378 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:04:21,396 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-10-16 02:04:21,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:04:21,592 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-16 02:04:21,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:04:21,593 INFO L82 PathProgramCache]: Analyzing trace with hash 534217897, now seen corresponding path program 1 times [2021-10-16 02:04:21,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:04:21,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2104214685] [2021-10-16 02:04:21,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:04:21,594 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:04:21,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:04:21,595 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:04:21,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-16 02:04:22,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:04:22,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 02:04:22,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:04:22,336 INFO L388 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 11 treesize of output 9 [2021-10-16 02:04:22,442 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-16 02:04:22,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 28 [2021-10-16 02:04:22,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-16 02:04:22,702 INFO L354 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2021-10-16 02:04:22,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 39 [2021-10-16 02:04:22,895 INFO L354 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2021-10-16 02:04:22,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 42 [2021-10-16 02:04:22,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2021-10-16 02:04:23,115 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-16 02:04:23,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:04:23,236 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:04:23,237 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-10-16 02:04:35,400 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem128.offset| (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse1))) (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) (bvadd |ULTIMATE.start_main_#t~mem128.offset| (_ bv10 32)) v_DerPreprocessor_1))) c_ULTIMATE.start_main_~argv~0.base) .cse1)))))))))))))))) (_ bv1 1)))) is different from false [2021-10-16 02:04:37,448 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem127.base| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem128.offset| (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (ULTIMATE.start_main_~mem_track~0.offset (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse3 (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32)))) (let ((.cse2 (bvadd c_ULTIMATE.start_main_~argv~0.offset .cse3))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base) (bvadd ULTIMATE.start_main_~mem_track~0.offset .cse3) |ULTIMATE.start_main_#t~mem127.base|)))) (let ((.cse1 (select (select .cse0 c_ULTIMATE.start_main_~argv~0.base) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem128.offset| (_ bv10 32)) v_DerPreprocessor_1)))) c_ULTIMATE.start_main_~argv~0.base) .cse2)))))))))))))))))) (_ bv1 1)))) is different from false [2021-10-16 02:04:50,121 INFO L354 Elim1Store]: treesize reduction 9, result has 81.6 percent of original size [2021-10-16 02:04:50,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 93 treesize of output 124 [2021-10-16 02:04:50,728 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-16 02:04:50,728 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:04:50,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2104214685] [2021-10-16 02:04:50,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2104214685] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:04:50,728 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:04:50,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 9] imperfect sequences [] total 15 [2021-10-16 02:04:50,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925342412] [2021-10-16 02:04:50,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-16 02:04:50,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:04:50,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-16 02:04:50,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=137, Unknown=7, NotChecked=50, Total=240 [2021-10-16 02:04:50,730 INFO L87 Difference]: Start difference. First operand 140 states and 153 transitions. Second operand has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:04:54,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:04:54,767 INFO L93 Difference]: Finished difference Result 163 states and 177 transitions. [2021-10-16 02:04:54,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-16 02:04:54,768 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-16 02:04:54,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:04:54,769 INFO L225 Difference]: With dead ends: 163 [2021-10-16 02:04:54,769 INFO L226 Difference]: Without dead ends: 163 [2021-10-16 02:04:54,770 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 108 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 21605.0ms TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=8, NotChecked=70, Total=420 [2021-10-16 02:04:54,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-16 02:04:54,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 149. [2021-10-16 02:04:54,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 130 states have (on average 1.2846153846153847) internal successors, (167), 148 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:04:54,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 167 transitions. [2021-10-16 02:04:54,775 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 167 transitions. Word has length 62 [2021-10-16 02:04:54,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:04:54,776 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 167 transitions. [2021-10-16 02:04:54,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:04:54,776 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 167 transitions. [2021-10-16 02:04:54,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-16 02:04:54,777 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:04:54,777 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:04:54,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-16 02:04:54,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:04:54,996 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-16 02:04:54,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:04:54,996 INFO L82 PathProgramCache]: Analyzing trace with hash 534217898, now seen corresponding path program 1 times [2021-10-16 02:04:54,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:04:54,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [287314706] [2021-10-16 02:04:54,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:04:54,997 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:04:54,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:04:54,997 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:04:54,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-16 02:04:55,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:04:55,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-16 02:04:55,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:04:55,776 INFO L388 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 12 treesize of output 10 [2021-10-16 02:04:55,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 02:04:55,890 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:04:55,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 14 [2021-10-16 02:04:55,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-10-16 02:04:55,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-16 02:04:56,192 INFO L354 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2021-10-16 02:04:56,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 62 [2021-10-16 02:04:56,236 INFO L354 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2021-10-16 02:04:56,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 55 [2021-10-16 02:04:56,451 INFO L354 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2021-10-16 02:04:56,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 69 [2021-10-16 02:04:56,492 INFO L354 Elim1Store]: treesize reduction 71, result has 13.4 percent of original size [2021-10-16 02:04:56,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 40 [2021-10-16 02:04:56,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 43 [2021-10-16 02:04:56,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 16 [2021-10-16 02:04:56,736 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-16 02:04:56,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:04:57,287 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:04:57,288 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-10-16 02:04:57,291 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:04:57,292 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-10-16 02:04:59,322 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem128.offset| (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32))) (let ((.cse0 (bvadd |ULTIMATE.start_main_#t~mem128.offset| (_ bv10 32))) (.cse1 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem128.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem128.base|) .cse0 v_DerPreprocessor_3)) c_ULTIMATE.start_main_~argv~0.base) .cse1) (_ bv1 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem128.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem128.base|) .cse0 v_DerPreprocessor_2)) c_ULTIMATE.start_main_~argv~0.base) .cse1))))) (forall ((|ULTIMATE.start_main_#t~mem128.offset| (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem128.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem128.base|) (bvadd |ULTIMATE.start_main_#t~mem128.offset| (_ bv10 32)) v_DerPreprocessor_3)) c_ULTIMATE.start_main_~argv~0.base) (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32)))))) (bvule .cse2 (bvadd .cse2 (_ bv1 32)))))) is different from false [2021-10-16 02:05:01,365 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem128.offset| (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32))) (let ((.cse2 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse2)) (.cse1 (bvadd |ULTIMATE.start_main_#t~mem128.offset| (_ bv10 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse0 (store (select |c_#memory_$Pointer$.offset| .cse0) .cse1 v_DerPreprocessor_3)) c_ULTIMATE.start_main_~argv~0.base) .cse2) (_ bv1 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) .cse1 v_DerPreprocessor_2)) c_ULTIMATE.start_main_~argv~0.base) .cse2)))))) (forall ((|ULTIMATE.start_main_#t~mem128.offset| (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32))) (let ((.cse3 (let ((.cse5 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (select (select (let ((.cse4 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse5))) (store |c_#memory_$Pointer$.offset| .cse4 (store (select |c_#memory_$Pointer$.offset| .cse4) (bvadd |ULTIMATE.start_main_#t~mem128.offset| (_ bv10 32)) v_DerPreprocessor_3))) c_ULTIMATE.start_main_~argv~0.base) .cse5)))) (bvule .cse3 (bvadd .cse3 (_ bv1 32)))))) is different from false [2021-10-16 02:05:03,483 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem127.offset| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem127.base| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem128.offset| (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (ULTIMATE.start_main_~mem_track~0.offset (_ BitVec 32))) (let ((.cse0 (let ((.cse5 (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32)))) (let ((.cse4 (bvadd c_ULTIMATE.start_main_~argv~0.offset .cse5))) (select (select (let ((.cse3 (bvadd ULTIMATE.start_main_~mem_track~0.offset .cse5))) (let ((.cse1 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~mem_track~0.base) .cse3 |ULTIMATE.start_main_#t~mem127.offset|))) (.cse2 (select (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base) .cse3 |ULTIMATE.start_main_#t~mem127.base|)) c_ULTIMATE.start_main_~argv~0.base) .cse4))) (store .cse1 .cse2 (store (select .cse1 .cse2) (bvadd |ULTIMATE.start_main_#t~mem128.offset| (_ bv10 32)) v_DerPreprocessor_3)))) c_ULTIMATE.start_main_~argv~0.base) .cse4))))) (bvule .cse0 (bvadd .cse0 (_ bv1 32))))) (forall ((|ULTIMATE.start_main_#t~mem127.offset| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem127.base| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem128.offset| (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (ULTIMATE.start_main_~mem_track~0.offset (_ BitVec 32))) (let ((.cse12 (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32)))) (let ((.cse9 (bvadd ULTIMATE.start_main_~mem_track~0.offset .cse12))) (let ((.cse11 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base) .cse9 |ULTIMATE.start_main_#t~mem127.base|))) (.cse10 (bvadd c_ULTIMATE.start_main_~argv~0.offset .cse12))) (let ((.cse7 (select (select .cse11 c_ULTIMATE.start_main_~argv~0.base) .cse10)) (.cse8 (bvadd |ULTIMATE.start_main_#t~mem128.offset| (_ bv10 32)))) (bvule (bvadd (select (select (let ((.cse6 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~mem_track~0.base) .cse9 |ULTIMATE.start_main_#t~mem127.offset|)))) (store .cse6 .cse7 (store (select .cse6 .cse7) .cse8 v_DerPreprocessor_3))) c_ULTIMATE.start_main_~argv~0.base) .cse10) (_ bv1 32)) (select |c_#length| (select (select (store .cse11 .cse7 (store (select .cse11 .cse7) .cse8 v_DerPreprocessor_2)) c_ULTIMATE.start_main_~argv~0.base) .cse10))))))))) is different from false [2021-10-16 02:09:04,784 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:09:04,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [287314706] [2021-10-16 02:09:04,785 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-16 02:09:04,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [783511751] [2021-10-16 02:09:04,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:09:04,785 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:09:04,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:09:04,786 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:09:04,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-10-16 02:09:06,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:09:06,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-16 02:09:06,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:06,325 INFO L388 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 11 treesize of output 9 [2021-10-16 02:09:06,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 02:09:06,638 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:09:06,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 14 [2021-10-16 02:09:06,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-16 02:09:06,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-10-16 02:09:07,073 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:09:07,098 INFO L354 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2021-10-16 02:09:07,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 58 [2021-10-16 02:09:07,104 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:09:07,122 INFO L354 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2021-10-16 02:09:07,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 70 [2021-10-16 02:09:07,712 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:09:07,791 INFO L354 Elim1Store]: treesize reduction 82, result has 28.7 percent of original size [2021-10-16 02:09:07,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 144 treesize of output 97 [2021-10-16 02:09:07,824 INFO L354 Elim1Store]: treesize reduction 71, result has 13.4 percent of original size [2021-10-16 02:09:07,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 121 treesize of output 81 [2021-10-16 02:09:08,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-10-16 02:09:08,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2021-10-16 02:09:08,137 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-16 02:09:08,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:08,276 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:09:08,277 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-10-16 02:09:08,280 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:09:08,280 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-10-16 02:09:10,305 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_5 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem128.offset| (_ BitVec 32))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem128.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem128.base|) (bvadd |ULTIMATE.start_main_#t~mem128.offset| (_ bv10 32)) v_DerPreprocessor_5)) c_ULTIMATE.start_main_~argv~0.base) (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32)))))) (bvule .cse0 (bvadd .cse0 (_ bv1 32))))) (forall ((v_DerPreprocessor_5 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem128.offset| (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32))) (let ((.cse1 (bvadd |ULTIMATE.start_main_#t~mem128.offset| (_ bv10 32))) (.cse2 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem128.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem128.base|) .cse1 v_DerPreprocessor_5)) c_ULTIMATE.start_main_~argv~0.base) .cse2) (_ bv1 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem128.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem128.base|) .cse1 v_DerPreprocessor_4)) c_ULTIMATE.start_main_~argv~0.base) .cse2)))))) is different from false [2021-10-16 02:09:12,348 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_5 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem128.offset| (_ BitVec 32))) (let ((.cse0 (let ((.cse2 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (select (select (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse2))) (store |c_#memory_$Pointer$.offset| .cse1 (store (select |c_#memory_$Pointer$.offset| .cse1) (bvadd |ULTIMATE.start_main_#t~mem128.offset| (_ bv10 32)) v_DerPreprocessor_5))) c_ULTIMATE.start_main_~argv~0.base) .cse2)))) (bvule .cse0 (bvadd (_ bv1 32) .cse0)))) (forall ((v_DerPreprocessor_5 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem128.offset| (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32))) (let ((.cse5 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse5)) (.cse4 (bvadd |ULTIMATE.start_main_#t~mem128.offset| (_ bv10 32)))) (bvule (bvadd (_ bv1 32) (select (select (store |c_#memory_$Pointer$.offset| .cse3 (store (select |c_#memory_$Pointer$.offset| .cse3) .cse4 v_DerPreprocessor_5)) c_ULTIMATE.start_main_~argv~0.base) .cse5)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse3 (store (select |c_#memory_$Pointer$.base| .cse3) .cse4 v_DerPreprocessor_4)) c_ULTIMATE.start_main_~argv~0.base) .cse5))))))) is different from false [2021-10-16 02:09:14,443 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem127.offset| (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem128.offset| (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32))) (let ((.cse6 (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32)))) (let ((.cse3 (bvadd c_ULTIMATE.start_main_~mem_track~0.offset .cse6))) (let ((.cse5 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base) .cse3 |c_ULTIMATE.start_main_#t~mem127.base|))) (.cse4 (bvadd c_ULTIMATE.start_main_~argv~0.offset .cse6))) (let ((.cse1 (select (select .cse5 c_ULTIMATE.start_main_~argv~0.base) .cse4)) (.cse2 (bvadd |ULTIMATE.start_main_#t~mem128.offset| (_ bv10 32)))) (bvule (bvadd (_ bv1 32) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~mem_track~0.base) .cse3 |ULTIMATE.start_main_#t~mem127.offset|)))) (store .cse0 .cse1 (store (select .cse0 .cse1) .cse2 v_DerPreprocessor_5))) c_ULTIMATE.start_main_~argv~0.base) .cse4)) (select |c_#length| (select (select (store .cse5 .cse1 (store (select .cse5 .cse1) .cse2 v_DerPreprocessor_4)) c_ULTIMATE.start_main_~argv~0.base) .cse4)))))))) (forall ((|ULTIMATE.start_main_#t~mem127.offset| (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem128.offset| (_ BitVec 32))) (let ((.cse7 (let ((.cse12 (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32)))) (let ((.cse11 (bvadd c_ULTIMATE.start_main_~argv~0.offset .cse12))) (select (select (let ((.cse10 (bvadd c_ULTIMATE.start_main_~mem_track~0.offset .cse12))) (let ((.cse8 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~mem_track~0.base) .cse10 |ULTIMATE.start_main_#t~mem127.offset|))) (.cse9 (select (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base) .cse10 |c_ULTIMATE.start_main_#t~mem127.base|)) c_ULTIMATE.start_main_~argv~0.base) .cse11))) (store .cse8 .cse9 (store (select .cse8 .cse9) (bvadd |ULTIMATE.start_main_#t~mem128.offset| (_ bv10 32)) v_DerPreprocessor_5)))) c_ULTIMATE.start_main_~argv~0.base) .cse11))))) (bvule .cse7 (bvadd (_ bv1 32) .cse7))))) is different from false [2021-10-16 02:09:16,526 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem127.offset| (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem128.offset| (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32))) (let ((.cse6 (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32)))) (let ((.cse3 (bvadd c_ULTIMATE.start_main_~mem_track~0.offset .cse6)) (.cse4 (bvadd c_ULTIMATE.start_main_~argv~0.offset .cse6))) (let ((.cse5 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base) .cse3 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse4))))) (let ((.cse1 (select (select .cse5 c_ULTIMATE.start_main_~argv~0.base) .cse4)) (.cse2 (bvadd |ULTIMATE.start_main_#t~mem128.offset| (_ bv10 32)))) (bvule (bvadd (_ bv1 32) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~mem_track~0.base) .cse3 |ULTIMATE.start_main_#t~mem127.offset|)))) (store .cse0 .cse1 (store (select .cse0 .cse1) .cse2 v_DerPreprocessor_5))) c_ULTIMATE.start_main_~argv~0.base) .cse4)) (select |c_#length| (select (select (store .cse5 .cse1 (store (select .cse5 .cse1) .cse2 v_DerPreprocessor_4)) c_ULTIMATE.start_main_~argv~0.base) .cse4)))))))) (forall ((|ULTIMATE.start_main_#t~mem127.offset| (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem128.offset| (_ BitVec 32))) (let ((.cse7 (let ((.cse12 (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32)))) (let ((.cse11 (bvadd c_ULTIMATE.start_main_~argv~0.offset .cse12))) (select (select (let ((.cse10 (bvadd c_ULTIMATE.start_main_~mem_track~0.offset .cse12))) (let ((.cse8 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~mem_track~0.base) .cse10 |ULTIMATE.start_main_#t~mem127.offset|))) (.cse9 (select (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base) .cse10 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse11))) c_ULTIMATE.start_main_~argv~0.base) .cse11))) (store .cse8 .cse9 (store (select .cse8 .cse9) (bvadd |ULTIMATE.start_main_#t~mem128.offset| (_ bv10 32)) v_DerPreprocessor_5)))) c_ULTIMATE.start_main_~argv~0.base) .cse11))))) (bvule .cse7 (bvadd (_ bv1 32) .cse7))))) is different from false [2021-10-16 02:09:23,069 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-10-16 02:09:23,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 30 [2021-10-16 02:09:23,226 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-16 02:09:23,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [783511751] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:09:23,227 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:09:23,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 11] imperfect sequences [] total 22 [2021-10-16 02:09:23,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880269507] [2021-10-16 02:09:23,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-16 02:09:23,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:09:23,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-16 02:09:23,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=541, Unknown=7, NotChecked=378, Total=1056 [2021-10-16 02:09:23,229 INFO L87 Difference]: Start difference. First operand 149 states and 167 transitions. Second operand has 23 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:31,148 WARN L207 SmtUtils]: Spent 5.18 s on a formula simplification. DAG size of input: 74 DAG size of output: 63 [2021-10-16 02:09:40,696 WARN L207 SmtUtils]: Spent 5.22 s on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2021-10-16 02:09:58,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:09:58,101 INFO L93 Difference]: Finished difference Result 150 states and 166 transitions. [2021-10-16 02:09:58,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-16 02:09:58,102 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-16 02:09:58,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:09:58,104 INFO L225 Difference]: With dead ends: 150 [2021-10-16 02:09:58,104 INFO L226 Difference]: Without dead ends: 150 [2021-10-16 02:09:58,105 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 7 IntricatePredicates, 2 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 43744.6ms TimeCoverageRelationStatistics Valid=219, Invalid=852, Unknown=13, NotChecked=476, Total=1560 [2021-10-16 02:09:58,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-10-16 02:09:58,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 149. [2021-10-16 02:09:58,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 130 states have (on average 1.2692307692307692) internal successors, (165), 148 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:58,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 165 transitions. [2021-10-16 02:09:58,111 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 165 transitions. Word has length 62 [2021-10-16 02:09:58,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:09:58,111 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 165 transitions. [2021-10-16 02:09:58,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:58,112 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 165 transitions. [2021-10-16 02:09:58,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-16 02:09:58,113 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:58,113 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:09:58,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-10-16 02:09:58,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-16 02:09:58,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:09:58,520 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-16 02:09:58,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:58,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1858298017, now seen corresponding path program 1 times [2021-10-16 02:09:58,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:58,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [265342945] [2021-10-16 02:09:58,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:09:58,522 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:58,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:58,523 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:58,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-16 02:09:59,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:09:59,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 02:09:59,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:59,519 INFO L388 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 11 treesize of output 9 [2021-10-16 02:09:59,607 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-16 02:09:59,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 28 [2021-10-16 02:09:59,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-16 02:09:59,847 INFO L354 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2021-10-16 02:09:59,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 40 [2021-10-16 02:10:00,038 INFO L354 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2021-10-16 02:10:00,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 43 [2021-10-16 02:10:00,235 INFO L354 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2021-10-16 02:10:00,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 43 [2021-10-16 02:10:00,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 26 [2021-10-16 02:10:00,524 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2021-10-16 02:10:00,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:10:00,684 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:10:00,685 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-16 02:10:10,859 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_6 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32)) (ULTIMATE.start_main_~j~0 (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse1))) (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) (bvadd |ULTIMATE.start_main_#t~mem130.offset| ULTIMATE.start_main_~j~0) v_DerPreprocessor_6))) c_ULTIMATE.start_main_~argv~0.base) .cse1))))))))))))))) (_ bv1 1)))) is different from false [2021-10-16 02:10:10,913 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:10:10,914 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-10-16 02:10:12,931 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem128.offset| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32)) (ULTIMATE.start_main_~j~0 (_ BitVec 32))) (= (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse2 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem128.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem128.base|) (bvadd |ULTIMATE.start_main_#t~mem128.offset| (_ bv10 32)) v_DerPreprocessor_7)))) (let ((.cse1 (select (select .cse0 c_ULTIMATE.start_main_~argv~0.base) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem130.offset| ULTIMATE.start_main_~j~0) v_DerPreprocessor_6)))) c_ULTIMATE.start_main_~argv~0.base) .cse2)))))))))))))))))))) (_ bv1 1)) (_ bv0 1))) is different from false [2021-10-16 02:10:14,955 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem128.offset| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32)) (ULTIMATE.start_main_~j~0 (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse2 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (select (select (let ((.cse0 (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse2))) (store |c_#memory_$Pointer$.base| .cse3 (store (select |c_#memory_$Pointer$.base| .cse3) (bvadd |ULTIMATE.start_main_#t~mem128.offset| (_ bv10 32)) v_DerPreprocessor_7))))) (let ((.cse1 (select (select .cse0 c_ULTIMATE.start_main_~argv~0.base) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem130.offset| ULTIMATE.start_main_~j~0) v_DerPreprocessor_6)))) c_ULTIMATE.start_main_~argv~0.base) .cse2))))))))))))))))))))) (_ bv1 1)))) is different from false [2021-10-16 02:10:17,004 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem127.base| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem128.offset| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32)) (ULTIMATE.start_main_~j~0 (_ BitVec 32)) (ULTIMATE.start_main_~mem_track~0.offset (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse5 (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32)))) (let ((.cse2 (bvadd c_ULTIMATE.start_main_~argv~0.offset .cse5))) (select (select (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base) (bvadd ULTIMATE.start_main_~mem_track~0.offset .cse5) |ULTIMATE.start_main_#t~mem127.base|)))) (let ((.cse4 (select (select .cse3 c_ULTIMATE.start_main_~argv~0.base) .cse2))) (store .cse3 .cse4 (store (select .cse3 .cse4) (bvadd |ULTIMATE.start_main_#t~mem128.offset| (_ bv10 32)) v_DerPreprocessor_7)))))) (let ((.cse1 (select (select .cse0 c_ULTIMATE.start_main_~argv~0.base) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem130.offset| ULTIMATE.start_main_~j~0) v_DerPreprocessor_6)))) c_ULTIMATE.start_main_~argv~0.base) .cse2))))))))))))))))))))))))) (_ bv1 1)))) is different from false [2021-10-16 02:11:01,218 INFO L354 Elim1Store]: treesize reduction 18, result has 28.0 percent of original size [2021-10-16 02:11:01,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 65 [2021-10-16 02:11:01,301 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 190 trivial. 2 not checked. [2021-10-16 02:11:01,302 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:11:01,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [265342945] [2021-10-16 02:11:01,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [265342945] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:11:01,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [135150053] [2021-10-16 02:11:01,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:11:01,302 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:11:01,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:11:01,304 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:11:01,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-10-16 02:11:02,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:11:02,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-16 02:11:02,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:11:03,054 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:11:03,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 23 [2021-10-16 02:11:03,330 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-16 02:11:03,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2021-10-16 02:11:03,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-16 02:11:03,762 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:11:03,782 INFO L354 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2021-10-16 02:11:03,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 37 [2021-10-16 02:11:04,362 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:11:04,429 INFO L354 Elim1Store]: treesize reduction 82, result has 28.7 percent of original size [2021-10-16 02:11:04,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 93 treesize of output 74 [2021-10-16 02:11:04,813 INFO L354 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2021-10-16 02:11:04,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 51 [2021-10-16 02:11:05,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2021-10-16 02:11:05,182 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2021-10-16 02:11:05,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:11:05,286 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:11:05,287 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-16 02:11:15,475 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:11:15,476 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-10-16 02:11:17,493 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_6 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem128.offset| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32)) (ULTIMATE.start_main_~j~0 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (= (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse2 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem128.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem128.base|) (bvadd |ULTIMATE.start_main_#t~mem128.offset| (_ bv10 32)) v_DerPreprocessor_9)))) (let ((.cse1 (select (select .cse0 c_ULTIMATE.start_main_~argv~0.base) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem130.offset| ULTIMATE.start_main_~j~0) v_DerPreprocessor_6)))) c_ULTIMATE.start_main_~argv~0.base) .cse2))))))))))))))))) (_ bv1 1)) (_ bv0 1))) is different from false [2021-10-16 02:11:19,519 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_6 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem128.offset| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32)) (ULTIMATE.start_main_~j~0 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse2 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (select (select (let ((.cse0 (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse2))) (store |c_#memory_$Pointer$.base| .cse3 (store (select |c_#memory_$Pointer$.base| .cse3) (bvadd |ULTIMATE.start_main_#t~mem128.offset| (_ bv10 32)) v_DerPreprocessor_9))))) (let ((.cse1 (select (select .cse0 c_ULTIMATE.start_main_~argv~0.base) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem130.offset| ULTIMATE.start_main_~j~0) v_DerPreprocessor_6)))) c_ULTIMATE.start_main_~argv~0.base) .cse2)))))))))))))))))))) (_ bv1 1)))) is different from false [2021-10-16 02:11:21,564 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_6 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem128.offset| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32)) (ULTIMATE.start_main_~j~0 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse5 (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32)))) (let ((.cse2 (bvadd c_ULTIMATE.start_main_~argv~0.offset .cse5))) (select (select (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base) (bvadd c_ULTIMATE.start_main_~mem_track~0.offset .cse5) |c_ULTIMATE.start_main_#t~mem127.base|)))) (let ((.cse4 (select (select .cse3 c_ULTIMATE.start_main_~argv~0.base) .cse2))) (store .cse3 .cse4 (store (select .cse3 .cse4) (bvadd |ULTIMATE.start_main_#t~mem128.offset| (_ bv10 32)) v_DerPreprocessor_9)))))) (let ((.cse1 (select (select .cse0 c_ULTIMATE.start_main_~argv~0.base) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem130.offset| ULTIMATE.start_main_~j~0) v_DerPreprocessor_6)))) c_ULTIMATE.start_main_~argv~0.base) .cse2))))))))))))))))))))))) (_ bv1 1)))) is different from false [2021-10-16 02:11:23,613 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_6 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem128.offset| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32)) (ULTIMATE.start_main_~j~0 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse5 (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32)))) (let ((.cse2 (bvadd c_ULTIMATE.start_main_~argv~0.offset .cse5))) (select (select (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base) (bvadd c_ULTIMATE.start_main_~mem_track~0.offset .cse5) (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse2))))) (let ((.cse4 (select (select .cse3 c_ULTIMATE.start_main_~argv~0.base) .cse2))) (store .cse3 .cse4 (store (select .cse3 .cse4) (bvadd |ULTIMATE.start_main_#t~mem128.offset| (_ bv10 32)) v_DerPreprocessor_9)))))) (let ((.cse1 (select (select .cse0 c_ULTIMATE.start_main_~argv~0.base) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem130.offset| ULTIMATE.start_main_~j~0) v_DerPreprocessor_6)))) c_ULTIMATE.start_main_~argv~0.base) .cse2)))))))))))))))))))))))) (_ bv1 1)))) is different from false [2021-10-16 02:11:28,631 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 190 trivial. 2 not checked. [2021-10-16 02:11:28,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [135150053] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:11:28,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264667094] [2021-10-16 02:11:28,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:11:28,631 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:11:28,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:11:28,632 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:11:28,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-16 02:11:29,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:11:29,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 02:11:29,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:11:29,493 INFO L388 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 11 treesize of output 9 [2021-10-16 02:11:29,538 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:11:29,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 20 [2021-10-16 02:11:29,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-10-16 02:11:29,801 INFO L354 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2021-10-16 02:11:29,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 31 [2021-10-16 02:11:32,018 INFO L354 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2021-10-16 02:11:32,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 34 [2021-10-16 02:11:34,196 INFO L354 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2021-10-16 02:11:34,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 43 [2021-10-16 02:11:34,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 17 [2021-10-16 02:11:34,385 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-16 02:11:34,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:11:34,434 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:11:34,437 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-10-16 02:11:34,473 INFO L354 Elim1Store]: treesize reduction 5, result has 80.8 percent of original size [2021-10-16 02:11:34,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 44 [2021-10-16 02:11:36,488 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_10 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32)) (ULTIMATE.start_main_~j~0 (_ BitVec 32))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem130.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem130.base|) (bvadd |ULTIMATE.start_main_#t~mem130.offset| ULTIMATE.start_main_~j~0) v_DerPreprocessor_10)) c_ULTIMATE.start_main_~argv~0.base) (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32)))) |c_ULTIMATE.start_main_#t~mem130.base|)) is different from false [2021-10-16 02:11:38,525 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_10 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32)) (ULTIMATE.start_main_~j~0 (_ BitVec 32))) (let ((.cse1 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse1))) (= .cse0 (select (select (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) (bvadd |ULTIMATE.start_main_#t~mem130.offset| ULTIMATE.start_main_~j~0) v_DerPreprocessor_10)) c_ULTIMATE.start_main_~argv~0.base) .cse1))))) is different from false [2021-10-16 02:11:38,575 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:11:38,576 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-10-16 02:11:40,606 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem128.offset| (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32)) (ULTIMATE.start_main_~j~0 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32))) (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem128.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem128.base|) (bvadd |ULTIMATE.start_main_#t~mem128.offset| (_ bv10 32)) v_DerPreprocessor_11))) (.cse2 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (let ((.cse0 (select (select .cse1 c_ULTIMATE.start_main_~argv~0.base) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 (store (select .cse1 .cse0) (bvadd |ULTIMATE.start_main_#t~mem130.offset| ULTIMATE.start_main_~j~0) v_DerPreprocessor_10)) c_ULTIMATE.start_main_~argv~0.base) .cse2))))) is different from false [2021-10-16 02:11:48,844 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem127.base| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem128.offset| (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32)) (ULTIMATE.start_main_~j~0 (_ BitVec 32)) (ULTIMATE.start_main_~mem_track~0.offset (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32))) (let ((.cse5 (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32)))) (let ((.cse2 (bvadd c_ULTIMATE.start_main_~argv~0.offset .cse5))) (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base) (bvadd ULTIMATE.start_main_~mem_track~0.offset .cse5) |ULTIMATE.start_main_#t~mem127.base|)))) (let ((.cse4 (select (select .cse3 c_ULTIMATE.start_main_~argv~0.base) .cse2))) (store .cse3 .cse4 (store (select .cse3 .cse4) (bvadd |ULTIMATE.start_main_#t~mem128.offset| (_ bv10 32)) v_DerPreprocessor_11)))))) (let ((.cse1 (select (select .cse0 c_ULTIMATE.start_main_~argv~0.base) .cse2))) (= (select (select (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem130.offset| ULTIMATE.start_main_~j~0) v_DerPreprocessor_10)) c_ULTIMATE.start_main_~argv~0.base) .cse2) .cse1)))))) is different from false [2021-10-16 02:11:50,717 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-16 02:11:50,718 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2021-10-16 02:11:50,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 13, 11] total 35 [2021-10-16 02:11:50,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890226748] [2021-10-16 02:11:50,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-10-16 02:11:50,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:11:50,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-10-16 02:11:50,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=958, Unknown=18, NotChecked=924, Total=2162 [2021-10-16 02:11:50,720 INFO L87 Difference]: Start difference. First operand 149 states and 165 transitions. Second operand has 36 states, 35 states have (on average 2.4) internal successors, (84), 36 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:12:17,928 WARN L207 SmtUtils]: Spent 6.52 s on a formula simplification. DAG size of input: 107 DAG size of output: 66 [2021-10-16 02:12:23,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:12:23,597 INFO L93 Difference]: Finished difference Result 158 states and 169 transitions. [2021-10-16 02:12:23,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-16 02:12:23,597 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.4) internal successors, (84), 36 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-16 02:12:23,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:12:23,599 INFO L225 Difference]: With dead ends: 158 [2021-10-16 02:12:23,599 INFO L226 Difference]: Without dead ends: 158 [2021-10-16 02:12:23,600 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 297 SyntacticMatches, 11 SemanticMatches, 58 ConstructedPredicates, 12 IntricatePredicates, 1 DeprecatedPredicates, 911 ImplicationChecksByTransitivity, 86319.1ms TimeCoverageRelationStatistics Valid=556, Invalid=1729, Unknown=19, NotChecked=1236, Total=3540 [2021-10-16 02:12:23,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-16 02:12:23,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 145. [2021-10-16 02:12:23,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 127 states have (on average 1.2440944881889764) internal successors, (158), 144 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:12:23,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 158 transitions. [2021-10-16 02:12:23,603 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 158 transitions. Word has length 67 [2021-10-16 02:12:23,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:12:23,604 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 158 transitions. [2021-10-16 02:12:23,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.4) internal successors, (84), 36 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:12:23,604 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 158 transitions. [2021-10-16 02:12:23,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-16 02:12:23,605 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:12:23,605 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:12:23,636 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2021-10-16 02:12:23,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-16 02:12:24,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2021-10-16 02:12:24,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:12:24,217 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-16 02:12:24,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:12:24,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1858298016, now seen corresponding path program 1 times [2021-10-16 02:12:24,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:12:24,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [738094707] [2021-10-16 02:12:24,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:12:24,218 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:12:24,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:12:24,219 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:12:24,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-16 02:12:25,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:12:25,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-16 02:12:25,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:12:25,260 INFO L388 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 12 treesize of output 10 [2021-10-16 02:12:25,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 02:12:25,362 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:12:25,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 14 [2021-10-16 02:12:25,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-16 02:12:25,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-10-16 02:12:25,597 INFO L354 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2021-10-16 02:12:25,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 70 [2021-10-16 02:12:25,629 INFO L354 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2021-10-16 02:12:25,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 47 [2021-10-16 02:12:25,801 INFO L354 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2021-10-16 02:12:25,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 69 [2021-10-16 02:12:25,828 INFO L354 Elim1Store]: treesize reduction 71, result has 13.4 percent of original size [2021-10-16 02:12:25,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 40 [2021-10-16 02:12:26,080 INFO L354 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2021-10-16 02:12:26,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 69 [2021-10-16 02:12:26,113 INFO L354 Elim1Store]: treesize reduction 71, result has 13.4 percent of original size [2021-10-16 02:12:26,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 40 [2021-10-16 02:12:26,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 43 [2021-10-16 02:12:26,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 16 [2021-10-16 02:12:26,397 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-16 02:12:26,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:12:27,053 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:12:27,053 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-10-16 02:12:27,056 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:12:27,056 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-10-16 02:12:29,103 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32))) (let ((.cse0 (bvadd |ULTIMATE.start_main_#t~mem130.offset| c_ULTIMATE.start_main_~j~0)) (.cse1 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem130.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem130.base|) .cse0 v_DerPreprocessor_12)) c_ULTIMATE.start_main_~argv~0.base) .cse1) (_ bv2 32) c_ULTIMATE.start_main_~j~0) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem130.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem130.base|) .cse0 v_DerPreprocessor_13)) c_ULTIMATE.start_main_~argv~0.base) .cse1))))) (forall ((|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem130.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem130.base|) (bvadd |ULTIMATE.start_main_#t~mem130.offset| c_ULTIMATE.start_main_~j~0) v_DerPreprocessor_12)) c_ULTIMATE.start_main_~argv~0.base) (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32)))))) (bvule (bvadd .cse2 c_ULTIMATE.start_main_~j~0 (_ bv1 32)) (bvadd .cse2 (_ bv2 32) c_ULTIMATE.start_main_~j~0))))) is different from false [2021-10-16 02:12:31,180 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32))) (let ((.cse0 (let ((.cse2 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (select (select (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse2))) (store |c_#memory_$Pointer$.offset| .cse1 (store (select |c_#memory_$Pointer$.offset| .cse1) (bvadd |ULTIMATE.start_main_#t~mem130.offset| c_ULTIMATE.start_main_~j~0) v_DerPreprocessor_12))) c_ULTIMATE.start_main_~argv~0.base) .cse2)))) (bvule (bvadd c_ULTIMATE.start_main_~j~0 (_ bv1 32) .cse0) (bvadd (_ bv2 32) c_ULTIMATE.start_main_~j~0 .cse0)))) (forall ((|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32))) (let ((.cse5 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse5)) (.cse4 (bvadd |ULTIMATE.start_main_#t~mem130.offset| c_ULTIMATE.start_main_~j~0))) (bvule (bvadd (_ bv2 32) c_ULTIMATE.start_main_~j~0 (select (select (store |c_#memory_$Pointer$.offset| .cse3 (store (select |c_#memory_$Pointer$.offset| .cse3) .cse4 v_DerPreprocessor_12)) c_ULTIMATE.start_main_~argv~0.base) .cse5)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse3 (store (select |c_#memory_$Pointer$.base| .cse3) .cse4 v_DerPreprocessor_13)) c_ULTIMATE.start_main_~argv~0.base) .cse5))))))) is different from false [2021-10-16 02:12:33,284 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32))) (let ((.cse0 (let ((.cse2 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (select (select (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse2))) (store |c_#memory_$Pointer$.offset| .cse1 (store (select |c_#memory_$Pointer$.offset| .cse1) |ULTIMATE.start_main_#t~mem130.offset| v_DerPreprocessor_12))) c_ULTIMATE.start_main_~argv~0.base) .cse2)))) (bvule (bvadd (_ bv1 32) .cse0) (bvadd (_ bv2 32) .cse0)))) (forall ((|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32))) (let ((.cse4 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse4))) (bvule (bvadd (_ bv2 32) (select (select (store |c_#memory_$Pointer$.offset| .cse3 (store (select |c_#memory_$Pointer$.offset| .cse3) |ULTIMATE.start_main_#t~mem130.offset| v_DerPreprocessor_12)) c_ULTIMATE.start_main_~argv~0.base) .cse4)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse3 (store (select |c_#memory_$Pointer$.base| .cse3) |ULTIMATE.start_main_#t~mem130.offset| v_DerPreprocessor_13)) c_ULTIMATE.start_main_~argv~0.base) .cse4))))))) is different from false [2021-10-16 02:12:33,311 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:12:33,312 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 264 [2021-10-16 02:12:33,316 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:12:33,318 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 303 [2021-10-16 02:12:33,377 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:12:33,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [738094707] [2021-10-16 02:12:33,378 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: No corresponding IProgramVar for v_DerPreprocessor_12 [2021-10-16 02:12:33,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1123603148] [2021-10-16 02:12:33,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:12:33,378 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:12:33,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:12:33,379 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:12:33,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2021-10-16 02:12:35,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:12:35,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-16 02:12:35,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:12:35,335 INFO L388 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 12 treesize of output 10 [2021-10-16 02:12:35,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 02:12:35,675 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:12:35,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 14 [2021-10-16 02:12:35,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-10-16 02:12:35,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-16 02:12:36,188 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:12:36,214 INFO L354 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2021-10-16 02:12:36,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 58 [2021-10-16 02:12:36,219 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:12:36,239 INFO L354 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2021-10-16 02:12:36,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 66 [2021-10-16 02:12:36,911 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:12:36,995 INFO L354 Elim1Store]: treesize reduction 82, result has 28.7 percent of original size [2021-10-16 02:12:36,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 140 treesize of output 97 [2021-10-16 02:12:37,029 INFO L354 Elim1Store]: treesize reduction 71, result has 13.4 percent of original size [2021-10-16 02:12:37,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 121 treesize of output 81 [2021-10-16 02:12:37,561 INFO L354 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2021-10-16 02:12:37,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 69 [2021-10-16 02:12:37,591 INFO L354 Elim1Store]: treesize reduction 71, result has 13.4 percent of original size [2021-10-16 02:12:37,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 40 [2021-10-16 02:12:37,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-10-16 02:12:37,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2021-10-16 02:12:37,846 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-16 02:12:37,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:12:38,043 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:12:38,044 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-10-16 02:12:38,049 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:12:38,049 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-10-16 02:12:40,091 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem130.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem130.base|) (bvadd |ULTIMATE.start_main_#t~mem130.offset| c_ULTIMATE.start_main_~j~0) v_DerPreprocessor_16)) c_ULTIMATE.start_main_~argv~0.base) (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32)))))) (bvule (bvadd c_ULTIMATE.start_main_~j~0 .cse0 (_ bv1 32)) (bvadd (_ bv2 32) c_ULTIMATE.start_main_~j~0 .cse0)))) (forall ((|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (let ((.cse1 (bvadd |ULTIMATE.start_main_#t~mem130.offset| c_ULTIMATE.start_main_~j~0)) (.cse2 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (bvule (bvadd (_ bv2 32) c_ULTIMATE.start_main_~j~0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem130.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem130.base|) .cse1 v_DerPreprocessor_16)) c_ULTIMATE.start_main_~argv~0.base) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem130.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem130.base|) .cse1 v_DerPreprocessor_17)) c_ULTIMATE.start_main_~argv~0.base) .cse2)))))) is different from false [2021-10-16 02:12:42,151 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (let ((.cse2 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse2)) (.cse1 (bvadd |ULTIMATE.start_main_#t~mem130.offset| c_ULTIMATE.start_main_~j~0))) (bvule (bvadd (_ bv2 32) (select (select (store |c_#memory_$Pointer$.offset| .cse0 (store (select |c_#memory_$Pointer$.offset| .cse0) .cse1 v_DerPreprocessor_16)) c_ULTIMATE.start_main_~argv~0.base) .cse2) c_ULTIMATE.start_main_~j~0) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) .cse1 v_DerPreprocessor_17)) c_ULTIMATE.start_main_~argv~0.base) .cse2)))))) (forall ((|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (let ((.cse3 (let ((.cse5 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (select (select (let ((.cse4 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse5))) (store |c_#memory_$Pointer$.offset| .cse4 (store (select |c_#memory_$Pointer$.offset| .cse4) (bvadd |ULTIMATE.start_main_#t~mem130.offset| c_ULTIMATE.start_main_~j~0) v_DerPreprocessor_16))) c_ULTIMATE.start_main_~argv~0.base) .cse5)))) (bvule (bvadd .cse3 c_ULTIMATE.start_main_~j~0 (_ bv1 32)) (bvadd (_ bv2 32) .cse3 c_ULTIMATE.start_main_~j~0))))) is different from false [2021-10-16 02:12:44,257 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (let ((.cse1 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse1))) (bvule (bvadd (_ bv2 32) (select (select (store |c_#memory_$Pointer$.offset| .cse0 (store (select |c_#memory_$Pointer$.offset| .cse0) |ULTIMATE.start_main_#t~mem130.offset| v_DerPreprocessor_16)) c_ULTIMATE.start_main_~argv~0.base) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) |ULTIMATE.start_main_#t~mem130.offset| v_DerPreprocessor_17)) c_ULTIMATE.start_main_~argv~0.base) .cse1)))))) (forall ((|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (let ((.cse2 (let ((.cse4 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (select (select (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse4))) (store |c_#memory_$Pointer$.offset| .cse3 (store (select |c_#memory_$Pointer$.offset| .cse3) |ULTIMATE.start_main_#t~mem130.offset| v_DerPreprocessor_16))) c_ULTIMATE.start_main_~argv~0.base) .cse4)))) (bvule (bvadd (_ bv1 32) .cse2) (bvadd (_ bv2 32) .cse2))))) is different from false [2021-10-16 02:12:44,278 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:12:44,279 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 264 [2021-10-16 02:12:44,281 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:12:44,282 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 303 [2021-10-16 02:12:44,325 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: No corresponding IProgramVar for v_DerPreprocessor_16 [2021-10-16 02:12:44,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016214211] [2021-10-16 02:12:44,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:12:44,326 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:12:44,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:12:44,327 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:12:44,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-16 02:12:45,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:12:45,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-16 02:12:45,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:12:45,267 INFO L388 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 14 treesize of output 12 [2021-10-16 02:12:45,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 02:12:45,325 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:12:45,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-10-16 02:12:45,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-16 02:12:45,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-10-16 02:12:45,477 INFO L354 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2021-10-16 02:12:45,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 62 [2021-10-16 02:12:45,508 INFO L354 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2021-10-16 02:12:45,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 55 [2021-10-16 02:12:45,613 INFO L354 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2021-10-16 02:12:45,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 69 [2021-10-16 02:12:45,642 INFO L354 Elim1Store]: treesize reduction 71, result has 13.4 percent of original size [2021-10-16 02:12:45,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 40 [2021-10-16 02:12:45,782 INFO L354 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2021-10-16 02:12:45,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 69 [2021-10-16 02:12:45,806 INFO L354 Elim1Store]: treesize reduction 71, result has 13.4 percent of original size [2021-10-16 02:12:45,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 40 [2021-10-16 02:12:45,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 43 [2021-10-16 02:12:45,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 16 [2021-10-16 02:12:45,950 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-16 02:12:45,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:12:46,164 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:12:46,164 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-10-16 02:12:46,172 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:12:46,173 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-10-16 02:12:48,228 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_20 (_ BitVec 32)) (v_DerPreprocessor_21 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32))) (let ((.cse0 (bvadd |ULTIMATE.start_main_#t~mem130.offset| c_ULTIMATE.start_main_~j~0)) (.cse1 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (bvule (bvadd (_ bv2 32) c_ULTIMATE.start_main_~j~0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem130.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem130.base|) .cse0 v_DerPreprocessor_20)) c_ULTIMATE.start_main_~argv~0.base) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem130.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem130.base|) .cse0 v_DerPreprocessor_21)) c_ULTIMATE.start_main_~argv~0.base) .cse1))))) (forall ((v_DerPreprocessor_20 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem130.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem130.base|) (bvadd |ULTIMATE.start_main_#t~mem130.offset| c_ULTIMATE.start_main_~j~0) v_DerPreprocessor_20)) c_ULTIMATE.start_main_~argv~0.base) (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32)))))) (bvule (bvadd c_ULTIMATE.start_main_~j~0 .cse2 (_ bv1 32)) (bvadd (_ bv2 32) c_ULTIMATE.start_main_~j~0 .cse2))))) is different from false [2021-10-16 02:12:50,324 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_20 (_ BitVec 32)) (v_DerPreprocessor_21 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32))) (let ((.cse2 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse2)) (.cse1 (bvadd |ULTIMATE.start_main_#t~mem130.offset| c_ULTIMATE.start_main_~j~0))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse0 (store (select |c_#memory_$Pointer$.offset| .cse0) .cse1 v_DerPreprocessor_20)) c_ULTIMATE.start_main_~argv~0.base) .cse2) (_ bv2 32) c_ULTIMATE.start_main_~j~0) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) .cse1 v_DerPreprocessor_21)) c_ULTIMATE.start_main_~argv~0.base) .cse2)))))) (forall ((v_DerPreprocessor_20 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32))) (let ((.cse3 (let ((.cse5 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (select (select (let ((.cse4 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse5))) (store |c_#memory_$Pointer$.offset| .cse4 (store (select |c_#memory_$Pointer$.offset| .cse4) (bvadd |ULTIMATE.start_main_#t~mem130.offset| c_ULTIMATE.start_main_~j~0) v_DerPreprocessor_20))) c_ULTIMATE.start_main_~argv~0.base) .cse5)))) (bvule (bvadd .cse3 c_ULTIMATE.start_main_~j~0 (_ bv1 32)) (bvadd .cse3 (_ bv2 32) c_ULTIMATE.start_main_~j~0))))) is different from false [2021-10-16 02:12:52,443 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_20 (_ BitVec 32)) (v_DerPreprocessor_21 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32))) (let ((.cse1 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse1))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse0 (store (select |c_#memory_$Pointer$.offset| .cse0) |ULTIMATE.start_main_#t~mem130.offset| v_DerPreprocessor_20)) c_ULTIMATE.start_main_~argv~0.base) .cse1) (_ bv2 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) |ULTIMATE.start_main_#t~mem130.offset| v_DerPreprocessor_21)) c_ULTIMATE.start_main_~argv~0.base) .cse1)))))) (forall ((v_DerPreprocessor_20 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32))) (let ((.cse2 (let ((.cse4 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (select (select (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse4))) (store |c_#memory_$Pointer$.offset| .cse3 (store (select |c_#memory_$Pointer$.offset| .cse3) |ULTIMATE.start_main_#t~mem130.offset| v_DerPreprocessor_20))) c_ULTIMATE.start_main_~argv~0.base) .cse4)))) (bvule (bvadd .cse2 (_ bv1 32)) (bvadd .cse2 (_ bv2 32)))))) is different from false [2021-10-16 02:12:52,462 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:12:52,463 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 264 [2021-10-16 02:12:52,466 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:12:52,466 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 303 [2021-10-16 02:12:52,507 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: No corresponding IProgramVar for v_DerPreprocessor_20 [2021-10-16 02:12:52,508 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:12:52,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-16 02:12:52,508 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-10-16 02:12:52,508 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-16 02:12:52,514 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION [2021-10-16 02:12:52,516 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-16 02:12:52,517 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-16 02:12:52,517 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-16 02:12:52,517 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-16 02:12:52,517 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-16 02:12:52,518 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-16 02:12:52,518 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-16 02:12:52,518 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-16 02:12:52,518 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-16 02:12:52,518 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-16 02:12:52,519 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-16 02:12:52,519 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-16 02:12:52,519 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-16 02:12:52,519 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-16 02:12:52,519 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-16 02:12:52,520 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-16 02:12:52,520 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION [2021-10-16 02:12:52,520 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION [2021-10-16 02:12:52,520 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION [2021-10-16 02:12:52,520 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION [2021-10-16 02:12:52,521 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION [2021-10-16 02:12:52,521 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION [2021-10-16 02:12:52,521 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION [2021-10-16 02:12:52,521 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 02:12:52,521 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 02:12:52,522 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 02:12:52,522 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 02:12:52,522 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 02:12:52,522 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 02:12:52,523 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 02:12:52,523 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 02:12:52,523 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 02:12:52,523 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 02:12:52,523 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 02:12:52,524 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 02:12:52,524 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_LEAK [2021-10-16 02:12:52,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-10-16 02:12:52,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2021-10-16 02:12:52,954 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2021-10-16 02:12:53,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f22a2d4-ffb7-49f9-9a7a-11c6457343d4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:12:53,148 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:12:53,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:12:53 BoogieIcfgContainer [2021-10-16 02:12:53,165 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:12:53,166 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:12:53,166 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:12:53,166 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:12:53,166 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:02:04" (3/4) ... [2021-10-16 02:12:53,170 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 02:12:53,170 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:12:53,171 INFO L168 Benchmark]: Toolchain (without parser) took 651343.52 ms. Allocated memory was 62.9 MB in the beginning and 408.9 MB in the end (delta: 346.0 MB). Free memory was 40.7 MB in the beginning and 317.1 MB in the end (delta: -276.5 MB). Peak memory consumption was 72.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:12:53,171 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 62.9 MB. Free memory is still 45.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:12:53,172 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1641.80 ms. Allocated memory was 62.9 MB in the beginning and 81.8 MB in the end (delta: 18.9 MB). Free memory was 40.4 MB in the beginning and 39.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 25.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:12:53,172 INFO L168 Benchmark]: Boogie Procedure Inliner took 102.86 ms. Allocated memory is still 81.8 MB. Free memory was 39.0 MB in the beginning and 58.1 MB in the end (delta: -19.1 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:12:53,172 INFO L168 Benchmark]: Boogie Preprocessor took 55.10 ms. Allocated memory is still 81.8 MB. Free memory was 58.1 MB in the beginning and 54.7 MB in the end (delta: 3.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:12:53,173 INFO L168 Benchmark]: RCFGBuilder took 1082.00 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 54.7 MB in the beginning and 68.1 MB in the end (delta: -13.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:12:53,173 INFO L168 Benchmark]: TraceAbstraction took 648449.00 ms. Allocated memory was 98.6 MB in the beginning and 408.9 MB in the end (delta: 310.4 MB). Free memory was 67.6 MB in the beginning and 317.1 MB in the end (delta: -249.5 MB). Peak memory consumption was 61.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:12:53,173 INFO L168 Benchmark]: Witness Printer took 4.55 ms. Allocated memory is still 408.9 MB. Free memory is still 317.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:12:53,175 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 62.9 MB. Free memory is still 45.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1641.80 ms. Allocated memory was 62.9 MB in the beginning and 81.8 MB in the end (delta: 18.9 MB). Free memory was 40.4 MB in the beginning and 39.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 25.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 102.86 ms. Allocated memory is still 81.8 MB. Free memory was 39.0 MB in the beginning and 58.1 MB in the end (delta: -19.1 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.10 ms. Allocated memory is still 81.8 MB. Free memory was 58.1 MB in the beginning and 54.7 MB in the end (delta: 3.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1082.00 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 54.7 MB in the beginning and 68.1 MB in the end (delta: -13.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 648449.00 ms. Allocated memory was 98.6 MB in the beginning and 408.9 MB in the end (delta: 310.4 MB). Free memory was 67.6 MB in the beginning and 317.1 MB in the end (delta: -249.5 MB). Peak memory consumption was 61.2 MB. Max. memory is 16.1 GB. * Witness Printer took 4.55 ms. Allocated memory is still 408.9 MB. Free memory is still 317.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1895]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L1763] static const char *applet_name; [L1764] static signed int bb_errno_location; [L1795] static struct utmp dummy_utmp; [L1877] char *a = malloc(11); [L1878] a[10] = 0 [L1879] int i=0; [L1879] COND TRUE i<10 [L1880] a[i]=__VERIFIER_nondet_char() [L1879] ++i [L1879] COND TRUE i<10 [L1880] a[i]=__VERIFIER_nondet_char() [L1879] ++i [L1879] COND TRUE i<10 [L1880] a[i]=__VERIFIER_nondet_char() [L1879] ++i [L1879] COND TRUE i<10 [L1880] a[i]=__VERIFIER_nondet_char() [L1879] ++i [L1879] COND TRUE i<10 [L1880] a[i]=__VERIFIER_nondet_char() [L1879] ++i [L1879] COND TRUE i<10 [L1880] a[i]=__VERIFIER_nondet_char() [L1879] ++i [L1879] COND TRUE i<10 [L1880] a[i]=__VERIFIER_nondet_char() [L1879] ++i [L1879] COND TRUE i<10 [L1880] a[i]=__VERIFIER_nondet_char() [L1879] ++i [L1879] COND TRUE i<10 [L1880] a[i]=__VERIFIER_nondet_char() [L1879] ++i [L1879] COND TRUE i<10 [L1880] a[i]=__VERIFIER_nondet_char() [L1879] ++i [L1879] COND FALSE !(i<10) [L1881] applet_name = a [L1882] bb_errno_location = __VERIFIER_nondet_int() [L1883] optind = 1 [L1884] int argc = __VERIFIER_nondet_int(); [L9] COND FALSE !(!cond) [L1886] char **argv=malloc((argc+1)*sizeof(char*)); [L1887] char **mem_track=malloc((argc+1)*sizeof(char*)); [L1888] argv[argc]=0 [L1889] int i=0; [L1889] COND TRUE i