./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/busybox-1.22.0/dirname-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/dirname-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs --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 90eaf2e76e590922119d90e478fc764e383193134f46d6fe59bc98f3ce7c6611 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:00:31,842 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:00:31,844 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:00:31,875 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:00:31,876 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:00:31,877 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:00:31,878 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:00:31,880 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:00:31,882 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:00:31,883 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:00:31,885 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:00:31,886 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:00:31,887 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:00:31,888 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:00:31,889 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:00:31,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:00:31,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:00:31,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:00:31,896 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:00:31,899 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:00:31,901 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:00:31,903 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:00:31,905 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:00:31,906 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:00:31,910 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:00:31,910 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:00:31,911 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:00:31,912 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:00:31,912 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:00:31,913 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:00:31,914 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:00:31,915 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:00:31,916 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:00:31,917 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:00:31,918 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:00:31,918 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:00:31,919 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:00:31,920 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:00:31,920 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:00:31,921 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:00:31,922 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:00:31,923 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2021-11-19 14:00:31,949 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:00:31,955 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:00:31,956 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:00:31,956 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:00:31,957 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:00:31,957 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:00:31,958 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:00:31,962 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:00:31,963 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:00:31,963 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:00:31,963 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:00:31,963 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:00:31,964 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:00:31,964 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:00:31,964 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:00:31,965 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:00:31,965 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 14:00:31,966 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 14:00:31,966 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:00:31,966 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 14:00:31,967 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:00:31,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:00:31,969 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 14:00:31,969 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 14:00:31,969 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 14:00:31,969 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:00:31,969 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:00:31,970 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:00:31,970 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:00:31,970 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:00:31,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:00:31,971 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:00:31,971 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:00:31,971 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:00:31,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:00:31,972 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:00:31,972 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:00:31,972 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_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90eaf2e76e590922119d90e478fc764e383193134f46d6fe59bc98f3ce7c6611 [2021-11-19 14:00:32,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:00:32,234 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:00:32,238 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:00:32,239 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:00:32,240 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:00:32,241 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/busybox-1.22.0/dirname-1.i [2021-11-19 14:00:32,314 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/data/edcb6671f/bdce35947b154ca1b61cd602450676b4/FLAGaf1b0b90e [2021-11-19 14:00:32,899 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:00:32,900 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/sv-benchmarks/c/busybox-1.22.0/dirname-1.i [2021-11-19 14:00:32,924 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/data/edcb6671f/bdce35947b154ca1b61cd602450676b4/FLAGaf1b0b90e [2021-11-19 14:00:33,176 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/data/edcb6671f/bdce35947b154ca1b61cd602450676b4 [2021-11-19 14:00:33,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:00:33,180 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:00:33,182 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:00:33,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:00:33,186 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:00:33,187 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:00:33" (1/1) ... [2021-11-19 14:00:33,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49504d6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:33, skipping insertion in model container [2021-11-19 14:00:33,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:00:33" (1/1) ... [2021-11-19 14:00:33,195 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:00:33,272 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:00:34,179 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:00:34,195 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 14:00:34,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4f818c4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:34, skipping insertion in model container [2021-11-19 14:00:34,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:00:34,197 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:00:34,203 INFO L158 Benchmark]: Toolchain (without parser) took 1017.54ms. Allocated memory is still 121.6MB. Free memory was 86.3MB in the beginning and 89.1MB in the end (delta: -2.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 14:00:34,205 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 86.0MB. Free memory was 43.0MB in the beginning and 42.9MB in the end (delta: 41.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:00:34,206 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1014.37ms. Allocated memory is still 121.6MB. Free memory was 86.1MB in the beginning and 89.1MB in the end (delta: -3.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 14:00:34,212 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 86.0MB. Free memory was 43.0MB in the beginning and 42.9MB in the end (delta: 41.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1014.37ms. Allocated memory is still 121.6MB. Free memory was 86.1MB in the beginning and 89.1MB in the end (delta: -3.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1162]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/dirname-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs --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 90eaf2e76e590922119d90e478fc764e383193134f46d6fe59bc98f3ce7c6611 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:00:36,422 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:00:36,425 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:00:36,470 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:00:36,471 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:00:36,472 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:00:36,474 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:00:36,476 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:00:36,480 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:00:36,488 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:00:36,489 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:00:36,492 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:00:36,493 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:00:36,496 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:00:36,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:00:36,503 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:00:36,505 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:00:36,506 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:00:36,512 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:00:36,520 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:00:36,522 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:00:36,523 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:00:36,526 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:00:36,528 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:00:36,534 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:00:36,535 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:00:36,535 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:00:36,536 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:00:36,537 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:00:36,538 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:00:36,538 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:00:36,539 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:00:36,540 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:00:36,541 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:00:36,542 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:00:36,542 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:00:36,543 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:00:36,543 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:00:36,543 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:00:36,544 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:00:36,545 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:00:36,546 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf [2021-11-19 14:00:36,591 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:00:36,591 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:00:36,593 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:00:36,593 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:00:36,593 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:00:36,593 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:00:36,593 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:00:36,594 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:00:36,594 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:00:36,594 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:00:36,596 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 14:00:36,596 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 14:00:36,597 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:00:36,597 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 14:00:36,597 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:00:36,597 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:00:36,597 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 14:00:36,597 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 14:00:36,598 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 14:00:36,598 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:00:36,598 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:00:36,598 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:00:36,598 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:00:36,599 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:00:36,599 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:00:36,599 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:00:36,599 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:00:36,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:00:36,600 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:00:36,600 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:00:36,600 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:00:36,600 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:00:36,601 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:00:36,601 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:00:36,601 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_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90eaf2e76e590922119d90e478fc764e383193134f46d6fe59bc98f3ce7c6611 [2021-11-19 14:00:37,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:00:37,032 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:00:37,035 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:00:37,036 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:00:37,037 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:00:37,038 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/busybox-1.22.0/dirname-1.i [2021-11-19 14:00:37,109 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/data/2ee14b7d3/453b40af65ac43ee84bb7c5e6f2eb1f7/FLAGe48c262e0 [2021-11-19 14:00:37,861 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:00:37,862 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/sv-benchmarks/c/busybox-1.22.0/dirname-1.i [2021-11-19 14:00:37,886 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/data/2ee14b7d3/453b40af65ac43ee84bb7c5e6f2eb1f7/FLAGe48c262e0 [2021-11-19 14:00:38,066 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/data/2ee14b7d3/453b40af65ac43ee84bb7c5e6f2eb1f7 [2021-11-19 14:00:38,070 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:00:38,071 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:00:38,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:00:38,073 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:00:38,091 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:00:38,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:00:38" (1/1) ... [2021-11-19 14:00:38,093 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1db07986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:38, skipping insertion in model container [2021-11-19 14:00:38,094 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:00:38" (1/1) ... [2021-11-19 14:00:38,105 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:00:38,183 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:00:38,924 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:00:38,940 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:00:38,960 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:00:39,095 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:00:39,106 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:00:39,207 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:00:39,335 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:00:39,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:39 WrapperNode [2021-11-19 14:00:39,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:00:39,336 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:00:39,336 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:00:39,336 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:00:39,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:39" (1/1) ... [2021-11-19 14:00:39,377 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:39" (1/1) ... [2021-11-19 14:00:39,450 INFO L137 Inliner]: procedures = 351, calls = 111, calls flagged for inlining = 8, calls inlined = 7, statements flattened = 263 [2021-11-19 14:00:39,451 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:00:39,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:00:39,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:00:39,452 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:00:39,460 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:39" (1/1) ... [2021-11-19 14:00:39,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:39" (1/1) ... [2021-11-19 14:00:39,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:39" (1/1) ... [2021-11-19 14:00:39,470 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:39" (1/1) ... [2021-11-19 14:00:39,488 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:39" (1/1) ... [2021-11-19 14:00:39,493 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:39" (1/1) ... [2021-11-19 14:00:39,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:39" (1/1) ... [2021-11-19 14:00:39,504 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:00:39,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:00:39,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:00:39,505 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:00:39,506 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:39" (1/1) ... [2021-11-19 14:00:39,528 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:00:39,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:00:39,567 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:00:39,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:00:39,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 14:00:39,607 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 14:00:39,607 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 14:00:39,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:00:39,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:00:39,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 14:00:39,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:00:39,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:00:39,608 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-19 14:00:39,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:00:39,608 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2021-11-19 14:00:39,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:00:39,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:00:39,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:00:39,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:00:39,815 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:00:39,817 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:00:40,960 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:00:40,968 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:00:40,968 INFO L301 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-19 14:00:40,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:00:40 BoogieIcfgContainer [2021-11-19 14:00:40,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:00:40,972 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:00:40,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:00:40,975 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:00:40,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:00:38" (1/3) ... [2021-11-19 14:00:40,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1897273d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:00:40, skipping insertion in model container [2021-11-19 14:00:40,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:39" (2/3) ... [2021-11-19 14:00:40,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1897273d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:00:40, skipping insertion in model container [2021-11-19 14:00:40,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:00:40" (3/3) ... [2021-11-19 14:00:40,978 INFO L111 eAbstractionObserver]: Analyzing ICFG dirname-1.i [2021-11-19 14:00:40,983 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:00:40,984 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 73 error locations. [2021-11-19 14:00:41,028 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:00:41,034 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, mAutomataTypeConcurrency=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 [2021-11-19 14:00:41,034 INFO L340 AbstractCegarLoop]: Starting to check reachability of 73 error locations. [2021-11-19 14:00:41,052 INFO L276 IsEmpty]: Start isEmpty. Operand has 181 states, 105 states have (on average 1.9428571428571428) internal successors, (204), 178 states have internal predecessors, (204), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:00:41,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-19 14:00:41,058 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:00:41,058 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-19 14:00:41,059 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-19 14:00:41,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:00:41,064 INFO L85 PathProgramCache]: Analyzing trace with hash 37801, now seen corresponding path program 1 times [2021-11-19 14:00:41,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:00:41,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [539291174] [2021-11-19 14:00:41,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:00:41,087 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:00:41,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:00:41,093 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:00:41,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:00:41,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:00:41,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:00:41,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:00:41,269 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 [2021-11-19 14:00:41,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:00:41,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:00:41,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:00:41,305 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:00:41,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [539291174] [2021-11-19 14:00:41,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [539291174] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:00:41,307 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:00:41,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 14:00:41,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429401245] [2021-11-19 14:00:41,310 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:00:41,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:00:41,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:00:41,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:00:41,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:00:41,368 INFO L87 Difference]: Start difference. First operand has 181 states, 105 states have (on average 1.9428571428571428) internal successors, (204), 178 states have internal predecessors, (204), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) 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) [2021-11-19 14:00:41,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:00:41,890 INFO L93 Difference]: Finished difference Result 189 states and 206 transitions. [2021-11-19 14:00:41,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:00:41,892 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 [2021-11-19 14:00:41,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:00:41,909 INFO L225 Difference]: With dead ends: 189 [2021-11-19 14:00:41,909 INFO L226 Difference]: Without dead ends: 187 [2021-11-19 14:00:41,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:00:41,917 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 162 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:00:41,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 146 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 14:00:41,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-11-19 14:00:41,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 171. [2021-11-19 14:00:41,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 100 states have (on average 1.85) internal successors, (185), 168 states have internal predecessors, (185), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:00:41,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 187 transitions. [2021-11-19 14:00:41,976 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 187 transitions. Word has length 3 [2021-11-19 14:00:41,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:00:41,977 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 187 transitions. [2021-11-19 14:00:41,977 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) [2021-11-19 14:00:41,977 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 187 transitions. [2021-11-19 14:00:41,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-19 14:00:41,978 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:00:41,978 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-19 14:00:41,991 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-19 14:00:42,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:00:42,192 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-19 14:00:42,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:00:42,193 INFO L85 PathProgramCache]: Analyzing trace with hash 37802, now seen corresponding path program 1 times [2021-11-19 14:00:42,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:00:42,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1541680478] [2021-11-19 14:00:42,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:00:42,194 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:00:42,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:00:42,196 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:00:42,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:00:42,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:00:42,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:00:42,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:00:42,334 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 [2021-11-19 14:00:42,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:00:42,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:00:42,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:00:42,502 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:00:42,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1541680478] [2021-11-19 14:00:42,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1541680478] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:00:42,503 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:00:42,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 14:00:42,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052732367] [2021-11-19 14:00:42,504 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:00:42,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:00:42,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:00:42,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:00:42,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:00:42,507 INFO L87 Difference]: Start difference. First operand 171 states and 187 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) [2021-11-19 14:00:43,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:00:43,626 INFO L93 Difference]: Finished difference Result 170 states and 186 transitions. [2021-11-19 14:00:43,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:00:43,628 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 [2021-11-19 14:00:43,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:00:43,629 INFO L225 Difference]: With dead ends: 170 [2021-11-19 14:00:43,630 INFO L226 Difference]: Without dead ends: 170 [2021-11-19 14:00:43,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:00:43,631 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 18 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:00:43,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 292 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 14:00:43,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-11-19 14:00:43,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2021-11-19 14:00:43,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 100 states have (on average 1.84) internal successors, (184), 167 states have internal predecessors, (184), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:00:43,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 186 transitions. [2021-11-19 14:00:43,647 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 186 transitions. Word has length 3 [2021-11-19 14:00:43,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:00:43,647 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 186 transitions. [2021-11-19 14:00:43,648 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) [2021-11-19 14:00:43,648 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 186 transitions. [2021-11-19 14:00:43,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-19 14:00:43,649 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:00:43,649 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-19 14:00:43,659 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-19 14:00:43,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:00:43,850 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-19 14:00:43,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:00:43,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1126113961, now seen corresponding path program 1 times [2021-11-19 14:00:43,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:00:43,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1631509313] [2021-11-19 14:00:43,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:00:43,851 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:00:43,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:00:43,852 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:00:43,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:00:43,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:00:43,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:00:43,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:00:43,982 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 [2021-11-19 14:00:44,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:00:44,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:00:44,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:00:44,745 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:00:44,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1631509313] [2021-11-19 14:00:44,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1631509313] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:00:44,746 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:00:44,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 14:00:44,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246658092] [2021-11-19 14:00:44,759 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:00:44,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:00:44,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:00:44,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:00:44,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:00:44,761 INFO L87 Difference]: Start difference. First operand 170 states and 186 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) [2021-11-19 14:00:47,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:00:47,636 INFO L93 Difference]: Finished difference Result 179 states and 197 transitions. [2021-11-19 14:00:47,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:00:47,637 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 [2021-11-19 14:00:47,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:00:47,639 INFO L225 Difference]: With dead ends: 179 [2021-11-19 14:00:47,639 INFO L226 Difference]: Without dead ends: 179 [2021-11-19 14:00:47,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:00:47,641 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 20 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:00:47,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 513 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-19 14:00:47,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-11-19 14:00:47,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 176. [2021-11-19 14:00:47,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 106 states have (on average 1.8018867924528301) internal successors, (191), 173 states have internal predecessors, (191), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:00:47,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 193 transitions. [2021-11-19 14:00:47,660 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 193 transitions. Word has length 6 [2021-11-19 14:00:47,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:00:47,661 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 193 transitions. [2021-11-19 14:00:47,661 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) [2021-11-19 14:00:47,661 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 193 transitions. [2021-11-19 14:00:47,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-19 14:00:47,662 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:00:47,662 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1] [2021-11-19 14:00:47,676 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-19 14:00:47,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:00:47,882 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-19 14:00:47,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:00:47,883 INFO L85 PathProgramCache]: Analyzing trace with hash 6917423, now seen corresponding path program 1 times [2021-11-19 14:00:47,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:00:47,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1002968141] [2021-11-19 14:00:47,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:00:47,884 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:00:47,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:00:47,886 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:00:47,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:00:48,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:00:48,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:00:48,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:00:48,067 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 [2021-11-19 14:00:48,379 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:00:48,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:00:51,675 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:00:51,675 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:00:51,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1002968141] [2021-11-19 14:00:51,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1002968141] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:00:51,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1317099947] [2021-11-19 14:00:51,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:00:51,676 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:00:51,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:00:51,696 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:00:51,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-19 14:00:51,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:00:51,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:00:51,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:00:51,880 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 [2021-11-19 14:00:52,026 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:00:52,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:00:52,861 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:00:52,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1317099947] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:00:52,861 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146408233] [2021-11-19 14:00:52,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:00:52,861 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:00:52,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:00:52,862 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:00:52,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-19 14:00:52,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:00:52,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:00:52,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:00:52,982 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 [2021-11-19 14:00:53,148 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:00:53,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:00:54,073 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:00:54,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146408233] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:00:54,074 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:00:54,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 9 [2021-11-19 14:00:54,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995485766] [2021-11-19 14:00:54,075 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:00:54,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 14:00:54,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:00:54,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 14:00:54,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:00:54,077 INFO L87 Difference]: Start difference. First operand 176 states and 193 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) [2021-11-19 14:00:59,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:00:59,695 INFO L93 Difference]: Finished difference Result 186 states and 202 transitions. [2021-11-19 14:00:59,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:00:59,696 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 [2021-11-19 14:00:59,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:00:59,698 INFO L225 Difference]: With dead ends: 186 [2021-11-19 14:00:59,698 INFO L226 Difference]: Without dead ends: 186 [2021-11-19 14:00:59,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:00:59,700 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 48 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:00:59,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 631 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2021-11-19 14:00:59,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-11-19 14:00:59,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2021-11-19 14:00:59,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 117 states have (on average 1.7094017094017093) internal successors, (200), 183 states have internal predecessors, (200), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:00:59,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 202 transitions. [2021-11-19 14:00:59,716 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 202 transitions. Word has length 14 [2021-11-19 14:00:59,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:00:59,717 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 202 transitions. [2021-11-19 14:00:59,717 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) [2021-11-19 14:00:59,717 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 202 transitions. [2021-11-19 14:00:59,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-19 14:00:59,719 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:00:59,719 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:00:59,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:00:59,941 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-19 14:01:00,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:01:00,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:01:00,340 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-19 14:01:00,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:00,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1238831362, now seen corresponding path program 1 times [2021-11-19 14:01:00,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:01:00,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [149716877] [2021-11-19 14:01:00,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:00,342 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:01:00,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:01:00,344 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:01:00,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:01:00,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:00,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:01:00,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:00,586 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:01:00,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:00,844 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:01:00,844 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:01:00,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [149716877] [2021-11-19 14:01:00,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [149716877] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:01:00,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [988065884] [2021-11-19 14:01:00,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:00,845 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:01:00,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:01:00,847 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:01:00,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-19 14:01:01,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:01,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:01:01,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:01,255 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:01:01,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:01,398 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:01:01,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [988065884] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:01:01,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096039153] [2021-11-19 14:01:01,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:01,399 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:01:01,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:01:01,406 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:01:01,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-19 14:01:01,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:01,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:01:01,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:01,646 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-19 14:01:01,646 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 [2021-11-19 14:01:01,722 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-19 14:01:01,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:01,801 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-19 14:01:01,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096039153] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:01:01,802 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-19 14:01:01,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [8, 8, 8, 8] total 15 [2021-11-19 14:01:01,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763005624] [2021-11-19 14:01:01,803 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:01,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:01:01,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:01:01,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:01:01,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:01:01,805 INFO L87 Difference]: Start difference. First operand 186 states and 202 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:01:02,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:02,532 INFO L93 Difference]: Finished difference Result 197 states and 214 transitions. [2021-11-19 14:01:02,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:01:02,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2021-11-19 14:01:02,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:02,535 INFO L225 Difference]: With dead ends: 197 [2021-11-19 14:01:02,536 INFO L226 Difference]: Without dead ends: 197 [2021-11-19 14:01:02,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:01:02,537 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 147 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:02,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 149 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 14:01:02,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-11-19 14:01:02,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 181. [2021-11-19 14:01:02,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 117 states have (on average 1.6666666666666667) internal successors, (195), 178 states have internal predecessors, (195), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:01:02,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 197 transitions. [2021-11-19 14:01:02,571 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 197 transitions. Word has length 33 [2021-11-19 14:01:02,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:02,571 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 197 transitions. [2021-11-19 14:01:02,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:01:02,572 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 197 transitions. [2021-11-19 14:01:02,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-19 14:01:02,573 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:02,573 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:01:02,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:01:02,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:01:02,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:01:03,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:01:03,175 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-19 14:01:03,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:03,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1238831361, now seen corresponding path program 1 times [2021-11-19 14:01:03,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:01:03,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [574411448] [2021-11-19 14:01:03,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:03,176 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:01:03,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:01:03,180 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:01:03,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:01:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:03,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:01:03,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:03,485 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:01:03,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:03,728 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:01:03,728 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:01:03,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [574411448] [2021-11-19 14:01:03,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [574411448] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:01:03,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1212551519] [2021-11-19 14:01:03,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:03,729 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:01:03,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:01:03,739 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:01:03,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-19 14:01:04,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:04,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:01:04,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:04,106 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:01:04,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:04,246 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:01:04,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1212551519] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:01:04,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151796236] [2021-11-19 14:01:04,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:04,246 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:01:04,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:01:04,251 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:01:04,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-19 14:01:04,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:04,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:01:04,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:04,536 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:01:04,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:05,098 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:01:05,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151796236] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:01:05,099 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:01:05,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 9] total 19 [2021-11-19 14:01:05,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613135504] [2021-11-19 14:01:05,100 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:01:05,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-19 14:01:05,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:01:05,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-19 14:01:05,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:01:05,103 INFO L87 Difference]: Start difference. First operand 181 states and 197 transitions. Second operand has 19 states, 19 states have (on average 3.8947368421052633) internal successors, (74), 19 states have internal predecessors, (74), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 14:01:06,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:06,174 INFO L93 Difference]: Finished difference Result 209 states and 226 transitions. [2021-11-19 14:01:06,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 14:01:06,177 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.8947368421052633) internal successors, (74), 19 states have internal predecessors, (74), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 33 [2021-11-19 14:01:06,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:06,179 INFO L225 Difference]: With dead ends: 209 [2021-11-19 14:01:06,180 INFO L226 Difference]: Without dead ends: 209 [2021-11-19 14:01:06,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=195, Invalid=405, Unknown=0, NotChecked=0, Total=600 [2021-11-19 14:01:06,182 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 899 mSDsluCounter, 1248 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 1429 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:06,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [899 Valid, 1429 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 14:01:06,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-11-19 14:01:06,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2021-11-19 14:01:06,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 145 states have (on average 1.5448275862068965) internal successors, (224), 206 states have internal predecessors, (224), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:01:06,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 226 transitions. [2021-11-19 14:01:06,193 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 226 transitions. Word has length 33 [2021-11-19 14:01:06,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:06,194 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 226 transitions. [2021-11-19 14:01:06,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.8947368421052633) internal successors, (74), 19 states have internal predecessors, (74), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 14:01:06,194 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 226 transitions. [2021-11-19 14:01:06,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-19 14:01:06,196 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:06,197 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:01:06,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 14:01:06,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-19 14:01:06,630 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-11-19 14:01:06,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:01:06,803 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-19 14:01:06,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:06,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1954308752, now seen corresponding path program 2 times [2021-11-19 14:01:06,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:01:06,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1918858890] [2021-11-19 14:01:06,804 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:01:06,805 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:01:06,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:01:06,806 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:01:06,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 14:01:06,939 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-19 14:01:06,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:01:06,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:01:06,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:07,139 INFO L354 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2021-11-19 14:01:07,140 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 19 treesize of output 21 [2021-11-19 14:01:07,244 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 14:01:07,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:07,975 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 14:01:07,975 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:01:07,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1918858890] [2021-11-19 14:01:07,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1918858890] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:01:07,975 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:01:07,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-19 14:01:07,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390383027] [2021-11-19 14:01:07,976 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:07,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:01:07,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:01:07,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:01:07,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:01:07,977 INFO L87 Difference]: Start difference. First operand 209 states and 226 transitions. Second operand has 9 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 14:01:10,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:10,636 INFO L93 Difference]: Finished difference Result 329 states and 360 transitions. [2021-11-19 14:01:10,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:01:10,638 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 53 [2021-11-19 14:01:10,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:10,640 INFO L225 Difference]: With dead ends: 329 [2021-11-19 14:01:10,641 INFO L226 Difference]: Without dead ends: 329 [2021-11-19 14:01:10,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:01:10,642 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 574 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:10,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [574 Valid, 503 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-19 14:01:10,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2021-11-19 14:01:10,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 273. [2021-11-19 14:01:10,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 210 states have (on average 1.6523809523809523) internal successors, (347), 270 states have internal predecessors, (347), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:01:10,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 349 transitions. [2021-11-19 14:01:10,653 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 349 transitions. Word has length 53 [2021-11-19 14:01:10,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:10,654 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 349 transitions. [2021-11-19 14:01:10,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 14:01:10,654 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 349 transitions. [2021-11-19 14:01:10,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-19 14:01:10,655 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:10,656 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:01:10,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 14:01:10,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:01:10,863 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-19 14:01:10,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:10,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1764655333, now seen corresponding path program 1 times [2021-11-19 14:01:10,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:01:10,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1526101199] [2021-11-19 14:01:10,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:10,865 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:01:10,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:01:10,866 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:01:10,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 14:01:11,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:11,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 14:01:11,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:11,411 INFO L354 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2021-11-19 14:01:11,411 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 35 treesize of output 36 [2021-11-19 14:01:11,418 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 37 treesize of output 35 [2021-11-19 14:01:12,083 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-11-19 14:01:12,083 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 52 treesize of output 61 [2021-11-19 14:01:12,099 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 14:01:12,100 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 55 treesize of output 51 [2021-11-19 14:01:12,315 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 14:01:12,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:14,298 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-19 14:01:14,299 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 47 treesize of output 46 [2021-11-19 14:01:16,902 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 59 treesize of output 57 [2021-11-19 14:01:17,424 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 14:01:17,425 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:01:17,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1526101199] [2021-11-19 14:01:17,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1526101199] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:01:17,425 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:01:17,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-11-19 14:01:17,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562213864] [2021-11-19 14:01:17,426 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:17,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-19 14:01:17,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:01:17,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-19 14:01:17,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=164, Unknown=1, NotChecked=0, Total=210 [2021-11-19 14:01:17,427 INFO L87 Difference]: Start difference. First operand 273 states and 349 transitions. Second operand has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 14:01:17,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:17,738 INFO L93 Difference]: Finished difference Result 274 states and 350 transitions. [2021-11-19 14:01:17,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:01:17,739 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 56 [2021-11-19 14:01:17,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:17,742 INFO L225 Difference]: With dead ends: 274 [2021-11-19 14:01:17,742 INFO L226 Difference]: Without dead ends: 274 [2021-11-19 14:01:17,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=57, Invalid=214, Unknown=1, NotChecked=0, Total=272 [2021-11-19 14:01:17,744 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 7 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 295 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:17,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 973 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 295 Unchecked, 0.1s Time] [2021-11-19 14:01:17,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-11-19 14:01:17,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2021-11-19 14:01:17,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 211 states have (on average 1.6492890995260663) internal successors, (348), 271 states have internal predecessors, (348), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:01:17,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 350 transitions. [2021-11-19 14:01:17,756 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 350 transitions. Word has length 56 [2021-11-19 14:01:17,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:17,757 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 350 transitions. [2021-11-19 14:01:17,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 14:01:17,757 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 350 transitions. [2021-11-19 14:01:17,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-19 14:01:17,759 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:17,759 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:01:17,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 14:01:17,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:01:17,978 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-19 14:01:17,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:17,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1130258934, now seen corresponding path program 1 times [2021-11-19 14:01:17,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:01:17,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1431006356] [2021-11-19 14:01:17,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:17,980 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:01:17,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:01:17,981 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:01:17,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 14:01:18,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:18,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:01:18,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:18,390 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 14:01:18,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:18,515 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 14:01:18,516 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:01:18,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1431006356] [2021-11-19 14:01:18,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1431006356] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:01:18,516 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:01:18,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:01:18,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885279855] [2021-11-19 14:01:18,517 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:18,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:01:18,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:01:18,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:01:18,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:01:18,519 INFO L87 Difference]: Start difference. First operand 274 states and 350 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:01:19,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:19,613 INFO L93 Difference]: Finished difference Result 292 states and 372 transitions. [2021-11-19 14:01:19,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:01:19,614 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2021-11-19 14:01:19,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:19,617 INFO L225 Difference]: With dead ends: 292 [2021-11-19 14:01:19,617 INFO L226 Difference]: Without dead ends: 292 [2021-11-19 14:01:19,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:01:19,618 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 246 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:19,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 186 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 14:01:19,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-11-19 14:01:19,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 268. [2021-11-19 14:01:19,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 211 states have (on average 1.5924170616113744) internal successors, (336), 265 states have internal predecessors, (336), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:01:19,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 338 transitions. [2021-11-19 14:01:19,631 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 338 transitions. Word has length 57 [2021-11-19 14:01:19,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:19,632 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 338 transitions. [2021-11-19 14:01:19,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:01:19,633 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 338 transitions. [2021-11-19 14:01:19,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-19 14:01:19,634 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:19,634 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:01:19,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 14:01:19,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:01:19,856 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-19 14:01:19,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:19,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1130258935, now seen corresponding path program 1 times [2021-11-19 14:01:19,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:01:19,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1818211124] [2021-11-19 14:01:19,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:19,857 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:01:19,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:01:19,858 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:01:19,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 14:01:20,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:20,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:01:20,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:20,315 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 14:01:20,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:20,589 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 14:01:20,589 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:01:20,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1818211124] [2021-11-19 14:01:20,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1818211124] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:01:20,590 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:01:20,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-19 14:01:20,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45419990] [2021-11-19 14:01:20,591 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:20,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:01:20,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:01:20,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:01:20,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:01:20,593 INFO L87 Difference]: Start difference. First operand 268 states and 338 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 14:01:21,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:21,155 INFO L93 Difference]: Finished difference Result 226 states and 244 transitions. [2021-11-19 14:01:21,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:01:21,156 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2021-11-19 14:01:21,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:21,158 INFO L225 Difference]: With dead ends: 226 [2021-11-19 14:01:21,158 INFO L226 Difference]: Without dead ends: 226 [2021-11-19 14:01:21,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:01:21,160 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 410 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:21,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [410 Valid, 464 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 14:01:21,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-11-19 14:01:21,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 204. [2021-11-19 14:01:21,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 147 states have (on average 1.489795918367347) internal successors, (219), 201 states have internal predecessors, (219), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:01:21,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 221 transitions. [2021-11-19 14:01:21,169 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 221 transitions. Word has length 57 [2021-11-19 14:01:21,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:21,171 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 221 transitions. [2021-11-19 14:01:21,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 14:01:21,171 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 221 transitions. [2021-11-19 14:01:21,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-19 14:01:21,179 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:21,179 INFO L514 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] [2021-11-19 14:01:21,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-19 14:01:21,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:01:21,395 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-19 14:01:21,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:21,395 INFO L85 PathProgramCache]: Analyzing trace with hash 678306588, now seen corresponding path program 1 times [2021-11-19 14:01:21,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:01:21,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1091325743] [2021-11-19 14:01:21,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:21,396 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:01:21,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:01:21,398 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:01:21,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 14:01:21,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:21,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:01:21,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:21,875 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 14:01:21,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:22,346 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 [2021-11-19 14:01:22,937 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 14:01:22,938 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:01:22,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1091325743] [2021-11-19 14:01:22,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1091325743] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:01:22,938 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:01:22,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-19 14:01:22,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651307559] [2021-11-19 14:01:22,939 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:22,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:01:22,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:01:22,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:01:22,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:01:22,940 INFO L87 Difference]: Start difference. First operand 204 states and 221 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:01:24,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:24,541 INFO L93 Difference]: Finished difference Result 336 states and 368 transitions. [2021-11-19 14:01:24,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:01:24,541 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2021-11-19 14:01:24,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:24,547 INFO L225 Difference]: With dead ends: 336 [2021-11-19 14:01:24,548 INFO L226 Difference]: Without dead ends: 336 [2021-11-19 14:01:24,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:01:24,549 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 508 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:24,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [508 Valid, 537 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-19 14:01:24,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2021-11-19 14:01:24,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 200. [2021-11-19 14:01:24,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 147 states have (on average 1.4625850340136055) internal successors, (215), 197 states have internal predecessors, (215), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:01:24,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 217 transitions. [2021-11-19 14:01:24,560 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 217 transitions. Word has length 58 [2021-11-19 14:01:24,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:24,561 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 217 transitions. [2021-11-19 14:01:24,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:01:24,561 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 217 transitions. [2021-11-19 14:01:24,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-19 14:01:24,564 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:24,565 INFO L514 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] [2021-11-19 14:01:24,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-19 14:01:24,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:01:24,782 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-19 14:01:24,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:24,783 INFO L85 PathProgramCache]: Analyzing trace with hash -447332259, now seen corresponding path program 1 times [2021-11-19 14:01:24,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:01:24,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [414600378] [2021-11-19 14:01:24,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:24,784 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:01:24,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:01:24,785 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:01:24,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-19 14:01:25,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:25,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:01:25,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:25,263 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-19 14:01:25,263 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 [2021-11-19 14:01:25,321 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-19 14:01:25,321 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 [2021-11-19 14:01:25,364 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 14:01:25,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:25,514 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 14:01:25,514 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:01:25,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [414600378] [2021-11-19 14:01:25,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [414600378] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:01:25,515 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:01:25,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 14:01:25,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349497918] [2021-11-19 14:01:25,515 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:25,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:01:25,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:01:25,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:01:25,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:01:25,517 INFO L87 Difference]: Start difference. First operand 200 states and 217 transitions. Second operand has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:01:26,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:26,022 INFO L93 Difference]: Finished difference Result 207 states and 225 transitions. [2021-11-19 14:01:26,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:01:26,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2021-11-19 14:01:26,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:26,024 INFO L225 Difference]: With dead ends: 207 [2021-11-19 14:01:26,025 INFO L226 Difference]: Without dead ends: 207 [2021-11-19 14:01:26,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 113 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:01:26,026 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 129 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:26,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 142 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 14:01:26,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-11-19 14:01:26,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 204. [2021-11-19 14:01:26,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 152 states have (on average 1.4671052631578947) internal successors, (223), 201 states have internal predecessors, (223), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:01:26,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 225 transitions. [2021-11-19 14:01:26,036 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 225 transitions. Word has length 59 [2021-11-19 14:01:26,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:26,036 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 225 transitions. [2021-11-19 14:01:26,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:01:26,037 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 225 transitions. [2021-11-19 14:01:26,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-19 14:01:26,038 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:26,038 INFO L514 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] [2021-11-19 14:01:26,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-19 14:01:26,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:01:26,256 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-19 14:01:26,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:26,256 INFO L85 PathProgramCache]: Analyzing trace with hash -447332258, now seen corresponding path program 1 times [2021-11-19 14:01:26,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:01:26,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1976560376] [2021-11-19 14:01:26,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:26,263 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:01:26,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:01:26,264 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:01:26,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-19 14:01:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:26,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 14:01:26,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:26,955 INFO L354 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2021-11-19 14:01:26,955 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 35 treesize of output 36 [2021-11-19 14:01:26,982 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-19 14:01:26,983 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 36 treesize of output 40 [2021-11-19 14:01:27,492 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-19 14:01:27,493 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 [2021-11-19 14:01:27,503 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-19 14:01:27,503 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 [2021-11-19 14:01:27,850 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 14:01:27,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:33,269 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 58 treesize of output 56 [2021-11-19 14:01:33,666 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 14:01:33,666 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:01:33,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1976560376] [2021-11-19 14:01:33,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1976560376] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:01:33,667 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:01:33,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-19 14:01:33,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901147761] [2021-11-19 14:01:33,668 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:33,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 14:01:33,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:01:33,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 14:01:33,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=121, Unknown=1, NotChecked=0, Total=156 [2021-11-19 14:01:33,670 INFO L87 Difference]: Start difference. First operand 204 states and 225 transitions. Second operand has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 14:01:36,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:36,339 INFO L93 Difference]: Finished difference Result 207 states and 228 transitions. [2021-11-19 14:01:36,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:01:36,342 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 59 [2021-11-19 14:01:36,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:36,344 INFO L225 Difference]: With dead ends: 207 [2021-11-19 14:01:36,344 INFO L226 Difference]: Without dead ends: 207 [2021-11-19 14:01:36,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=45, Invalid=164, Unknown=1, NotChecked=0, Total=210 [2021-11-19 14:01:36,345 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 9 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 237 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:36,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 1139 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 237 Unchecked, 2.5s Time] [2021-11-19 14:01:36,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-11-19 14:01:36,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2021-11-19 14:01:36,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 155 states have (on average 1.4580645161290322) internal successors, (226), 204 states have internal predecessors, (226), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:01:36,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 228 transitions. [2021-11-19 14:01:36,354 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 228 transitions. Word has length 59 [2021-11-19 14:01:36,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:36,355 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 228 transitions. [2021-11-19 14:01:36,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 14:01:36,356 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 228 transitions. [2021-11-19 14:01:36,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-19 14:01:36,357 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:36,357 INFO L514 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] [2021-11-19 14:01:36,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-19 14:01:36,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:01:36,578 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-19 14:01:36,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:36,579 INFO L85 PathProgramCache]: Analyzing trace with hash 808218465, now seen corresponding path program 1 times [2021-11-19 14:01:36,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:01:36,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [661075722] [2021-11-19 14:01:36,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:36,580 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:01:36,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:01:36,582 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:01:36,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-19 14:01:37,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:37,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:01:37,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:37,336 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 [2021-11-19 14:01:37,400 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 25 treesize of output 21 [2021-11-19 14:01:37,681 INFO L354 Elim1Store]: treesize reduction 46, result has 20.7 percent of original size [2021-11-19 14:01:37,682 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 41 treesize of output 31 [2021-11-19 14:01:37,823 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 27 treesize of output 13 [2021-11-19 14:01:37,858 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 14:01:37,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:40,003 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~mem_track~0#1.base| (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)))) (select (select (store |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~mem_track~0#1.base|) (bvadd .cse0 |c_ULTIMATE.start_main_~mem_track~0#1.offset|) |c_ULTIMATE.start_main_#t~mem143#1.base|)) |c_ULTIMATE.start_main_~argv~0#1.base|) (bvadd .cse0 |c_ULTIMATE.start_main_~argv~0#1.offset|))))))) (_ bv1 1)))) is different from false [2021-11-19 14:01:42,037 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~mem_track~0#1.base| (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)))) (let ((.cse1 (bvadd .cse0 |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~mem_track~0#1.base|) (bvadd .cse0 |c_ULTIMATE.start_main_~mem_track~0#1.offset|) (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1)))))))) (_ bv1 1)))) is different from false [2021-11-19 14:01:42,174 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 14:01:42,174 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:01:42,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [661075722] [2021-11-19 14:01:42,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [661075722] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:01:42,174 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:01:42,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2021-11-19 14:01:42,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530541592] [2021-11-19 14:01:42,175 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:42,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:01:42,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:01:42,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:01:42,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=65, Unknown=2, NotChecked=34, Total=132 [2021-11-19 14:01:42,177 INFO L87 Difference]: Start difference. First operand 207 states and 228 transitions. Second operand has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:01:54,661 WARN L227 SmtUtils]: Spent 10.14s on a formula simplification. DAG size of input: 42 DAG size of output: 38 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 14:02:03,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:03,567 INFO L93 Difference]: Finished difference Result 205 states and 225 transitions. [2021-11-19 14:02:03,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:02:03,567 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2021-11-19 14:02:03,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:03,569 INFO L225 Difference]: With dead ends: 205 [2021-11-19 14:02:03,569 INFO L226 Difference]: Without dead ends: 205 [2021-11-19 14:02:03,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 111 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 24.7s TimeCoverageRelationStatistics Valid=51, Invalid=108, Unknown=5, NotChecked=46, Total=210 [2021-11-19 14:02:03,570 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 157 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 309 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:03,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 588 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 263 Invalid, 0 Unknown, 309 Unchecked, 1.1s Time] [2021-11-19 14:02:03,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-11-19 14:02:03,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2021-11-19 14:02:03,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 155 states have (on average 1.4387096774193548) internal successors, (223), 202 states have internal predecessors, (223), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:02:03,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 225 transitions. [2021-11-19 14:02:03,578 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 225 transitions. Word has length 62 [2021-11-19 14:02:03,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:03,578 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 225 transitions. [2021-11-19 14:02:03,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:02:03,579 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 225 transitions. [2021-11-19 14:02:03,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-19 14:02:03,580 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:03,580 INFO L514 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] [2021-11-19 14:02:03,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-19 14:02:03,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:02:03,799 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-19 14:02:03,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:03,799 INFO L85 PathProgramCache]: Analyzing trace with hash 808218466, now seen corresponding path program 1 times [2021-11-19 14:02:03,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:02:03,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [804057231] [2021-11-19 14:02:03,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:03,801 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:02:03,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:02:03,802 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:02:03,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-19 14:02:04,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:04,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 14:02:04,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:02:04,477 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 [2021-11-19 14:02:04,523 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 [2021-11-19 14:02:04,566 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 16 treesize of output 12 [2021-11-19 14:02:04,584 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 22 treesize of output 18 [2021-11-19 14:02:04,801 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-19 14:02:04,801 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 62 [2021-11-19 14:02:04,865 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-19 14:02:04,866 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 47 treesize of output 46 [2021-11-19 14:02:04,987 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 51 treesize of output 33 [2021-11-19 14:02:04,993 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 30 treesize of output 12 [2021-11-19 14:02:05,051 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 14:02:05,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:02:16,052 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 14:02:16,052 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:02:16,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [804057231] [2021-11-19 14:02:16,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [804057231] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:02:16,053 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:02:16,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-19 14:02:16,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472506933] [2021-11-19 14:02:16,053 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:16,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:02:16,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:02:16,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:02:16,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=79, Unknown=2, NotChecked=0, Total=110 [2021-11-19 14:02:16,055 INFO L87 Difference]: Start difference. First operand 205 states and 225 transitions. Second operand has 11 states, 10 states have (on average 3.2) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:02:19,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:19,950 INFO L93 Difference]: Finished difference Result 204 states and 224 transitions. [2021-11-19 14:02:19,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:02:19,952 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.2) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2021-11-19 14:02:19,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:19,954 INFO L225 Difference]: With dead ends: 204 [2021-11-19 14:02:19,954 INFO L226 Difference]: Without dead ends: 204 [2021-11-19 14:02:19,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=53, Invalid=127, Unknown=2, NotChecked=0, Total=182 [2021-11-19 14:02:19,956 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 159 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 65 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:19,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 627 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 273 Invalid, 0 Unknown, 65 Unchecked, 3.7s Time] [2021-11-19 14:02:19,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-11-19 14:02:19,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2021-11-19 14:02:19,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 155 states have (on average 1.4322580645161291) internal successors, (222), 201 states have internal predecessors, (222), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:02:19,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 224 transitions. [2021-11-19 14:02:19,964 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 224 transitions. Word has length 62 [2021-11-19 14:02:19,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:19,964 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 224 transitions. [2021-11-19 14:02:19,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.2) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:02:19,965 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 224 transitions. [2021-11-19 14:02:19,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-19 14:02:19,966 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:19,966 INFO L514 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, 1, 1, 1, 1] [2021-11-19 14:02:19,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-19 14:02:20,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:02:20,186 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-19 14:02:20,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:20,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1539567244, now seen corresponding path program 1 times [2021-11-19 14:02:20,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:02:20,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1410258618] [2021-11-19 14:02:20,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:20,187 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:02:20,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:02:20,188 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:02:20,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-19 14:02:20,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:20,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 14:02:20,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:02:20,763 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 [2021-11-19 14:02:20,888 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-19 14:02:20,888 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 23 treesize of output 30 [2021-11-19 14:02:20,974 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 29 treesize of output 25 [2021-11-19 14:02:21,282 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-19 14:02:21,282 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 51 treesize of output 41 [2021-11-19 14:02:21,636 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-19 14:02:21,637 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 77 treesize of output 43 [2021-11-19 14:02:21,713 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 57 treesize of output 30 [2021-11-19 14:02:21,797 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 14:02:21,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:02:21,970 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:02:21,972 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-19 14:02:23,990 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem144#1.offset| (_ BitVec 64)) (v_DerPreprocessor_1 (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem144#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem144#1.base|) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem144#1.offset|) v_DerPreprocessor_1)) |c_ULTIMATE.start_main_~argv~0#1.base|) (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))))) (_ bv1 1)))) is different from false [2021-11-19 14:02:26,015 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem144#1.offset| (_ BitVec 64)) (v_DerPreprocessor_1 (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem144#1.offset|) v_DerPreprocessor_1))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1)))))))) (_ bv1 1)))) is different from false [2021-11-19 14:02:28,085 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~mem_track~0#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem144#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem143#1.base| (_ BitVec 64)) (v_DerPreprocessor_1 (_ BitVec 64))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse3 (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)))) (let ((.cse2 (bvadd .cse3 |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base|) (bvadd .cse3 |ULTIMATE.start_main_~mem_track~0#1.offset|) |ULTIMATE.start_main_#t~mem143#1.base|)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem144#1.offset|) v_DerPreprocessor_1)))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))))))))))))) is different from false [2021-11-19 14:02:34,888 INFO L354 Elim1Store]: treesize reduction 9, result has 81.6 percent of original size [2021-11-19 14:02:34,888 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 77 treesize of output 108 [2021-11-19 14:02:35,313 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 14:02:35,314 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:02:35,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1410258618] [2021-11-19 14:02:35,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1410258618] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:02:35,314 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:02:35,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 9] imperfect sequences [] total 15 [2021-11-19 14:02:35,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418007361] [2021-11-19 14:02:35,315 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:35,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 14:02:35,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:02:35,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 14:02:35,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=119, Unknown=5, NotChecked=72, Total=240 [2021-11-19 14:02:35,316 INFO L87 Difference]: Start difference. First operand 204 states and 224 transitions. Second operand has 16 states, 15 states have (on average 2.8) internal successors, (42), 16 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:02:37,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:37,926 INFO L93 Difference]: Finished difference Result 213 states and 234 transitions. [2021-11-19 14:02:37,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 14:02:37,927 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.8) internal successors, (42), 16 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2021-11-19 14:02:37,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:37,929 INFO L225 Difference]: With dead ends: 213 [2021-11-19 14:02:37,929 INFO L226 Difference]: Without dead ends: 213 [2021-11-19 14:02:37,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 116 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=69, Invalid=178, Unknown=5, NotChecked=90, Total=342 [2021-11-19 14:02:37,930 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 24 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 375 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:37,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 1097 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 230 Invalid, 0 Unknown, 375 Unchecked, 1.9s Time] [2021-11-19 14:02:37,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-11-19 14:02:37,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 211. [2021-11-19 14:02:37,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 162 states have (on average 1.4259259259259258) internal successors, (231), 208 states have internal predecessors, (231), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:02:37,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 233 transitions. [2021-11-19 14:02:37,938 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 233 transitions. Word has length 66 [2021-11-19 14:02:37,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:37,939 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 233 transitions. [2021-11-19 14:02:37,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.8) internal successors, (42), 16 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:02:37,939 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 233 transitions. [2021-11-19 14:02:37,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-19 14:02:37,940 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:37,940 INFO L514 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, 1, 1, 1, 1] [2021-11-19 14:02:37,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-19 14:02:38,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:02:38,141 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-19 14:02:38,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:38,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1539567245, now seen corresponding path program 1 times [2021-11-19 14:02:38,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:02:38,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [970155481] [2021-11-19 14:02:38,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:38,142 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:02:38,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:02:38,143 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:02:38,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-19 14:02:38,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:38,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 14:02:38,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:02:38,709 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 [2021-11-19 14:02:38,782 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 [2021-11-19 14:02:38,823 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 14:02:38,834 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 16 treesize of output 16 [2021-11-19 14:02:38,916 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 16 treesize of output 12 [2021-11-19 14:02:38,940 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 26 treesize of output 22 [2021-11-19 14:02:39,219 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-19 14:02:39,219 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 76 treesize of output 75 [2021-11-19 14:02:39,283 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-19 14:02:39,284 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 60 treesize of output 50 [2021-11-19 14:02:39,601 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-19 14:02:39,601 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 132 treesize of output 71 [2021-11-19 14:02:39,635 INFO L354 Elim1Store]: treesize reduction 77, result has 13.5 percent of original size [2021-11-19 14:02:39,635 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 86 treesize of output 43 [2021-11-19 14:02:39,793 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 64 treesize of output 37 [2021-11-19 14:02:39,799 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 34 treesize of output 16 [2021-11-19 14:02:39,862 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 14:02:39,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:02:41,277 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:02:41,279 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-11-19 14:02:41,283 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:02:41,285 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-11-19 14:02:43,380 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem144#1.offset| (_ BitVec 64)) (v_DerPreprocessor_3 (_ BitVec 64))) (let ((.cse0 ((_ sign_extend 32) (_ bv0 32))) (.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem144#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem144#1.base|) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem144#1.offset|) v_DerPreprocessor_3)) |c_ULTIMATE.start_main_~argv~0#1.base|) (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|)))) (bvule (bvadd .cse0 .cse1) (bvadd .cse0 .cse1 (_ bv1 64))))) (forall ((|ULTIMATE.start_main_#t~mem144#1.offset| (_ BitVec 64)) (v_DerPreprocessor_3 (_ BitVec 64)) (v_DerPreprocessor_2 (_ BitVec 64))) (let ((.cse2 (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem144#1.offset|)) (.cse3 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (bvule (bvadd ((_ sign_extend 32) (_ bv0 32)) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem144#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem144#1.base|) .cse2 v_DerPreprocessor_3)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3) (_ bv1 64)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem144#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem144#1.base|) .cse2 v_DerPreprocessor_2)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3)))))) is different from false [2021-11-19 14:02:45,510 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem144#1.offset| (_ BitVec 64)) (v_DerPreprocessor_3 (_ BitVec 64))) (let ((.cse0 ((_ sign_extend 32) (_ bv0 32))) (.cse1 (let ((.cse3 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3))) (store |c_#memory_$Pointer$.offset| .cse2 (store (select |c_#memory_$Pointer$.offset| .cse2) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem144#1.offset|) v_DerPreprocessor_3))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3)))) (bvule (bvadd .cse0 .cse1) (bvadd .cse0 .cse1 (_ bv1 64))))) (forall ((|ULTIMATE.start_main_#t~mem144#1.offset| (_ BitVec 64)) (v_DerPreprocessor_3 (_ BitVec 64)) (v_DerPreprocessor_2 (_ BitVec 64))) (let ((.cse6 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (let ((.cse4 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse6)) (.cse5 (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem144#1.offset|))) (bvule (bvadd ((_ sign_extend 32) (_ bv0 32)) (select (select (store |c_#memory_$Pointer$.offset| .cse4 (store (select |c_#memory_$Pointer$.offset| .cse4) .cse5 v_DerPreprocessor_3)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse6) (_ bv1 64)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse4 (store (select |c_#memory_$Pointer$.base| .cse4) .cse5 v_DerPreprocessor_2)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse6))))))) is different from false [2021-11-19 14:02:47,831 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_~mem_track~0#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem144#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem143#1.offset| (_ BitVec 64)) (v_DerPreprocessor_3 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem143#1.base| (_ BitVec 64))) (let ((.cse0 ((_ sign_extend 32) (_ bv0 32))) (.cse1 (let ((.cse6 (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)))) (let ((.cse5 (bvadd .cse6 |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse4 (bvadd .cse6 |ULTIMATE.start_main_~mem_track~0#1.offset|))) (let ((.cse2 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~mem_track~0#1.base|) .cse4 |ULTIMATE.start_main_#t~mem143#1.offset|))) (.cse3 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base|) .cse4 |ULTIMATE.start_main_#t~mem143#1.base|)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse5))) (store .cse2 .cse3 (store (select .cse2 .cse3) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem144#1.offset|) v_DerPreprocessor_3)))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse5))))) (bvule (bvadd .cse0 .cse1) (bvadd .cse0 (_ bv1 64) .cse1)))) (forall ((|ULTIMATE.start_main_~mem_track~0#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem144#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem143#1.offset| (_ BitVec 64)) (v_DerPreprocessor_3 (_ BitVec 64)) (v_DerPreprocessor_2 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem143#1.base| (_ BitVec 64))) (let ((.cse13 (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)))) (let ((.cse10 (bvadd .cse13 |ULTIMATE.start_main_~mem_track~0#1.offset|))) (let ((.cse12 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base|) .cse10 |ULTIMATE.start_main_#t~mem143#1.base|))) (.cse11 (bvadd .cse13 |c_ULTIMATE.start_main_~argv~0#1.offset|))) (let ((.cse8 (select (select .cse12 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse11)) (.cse9 (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem144#1.offset|))) (bvule (bvadd ((_ sign_extend 32) (_ bv0 32)) (_ bv1 64) (select (select (let ((.cse7 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~mem_track~0#1.base|) .cse10 |ULTIMATE.start_main_#t~mem143#1.offset|)))) (store .cse7 .cse8 (store (select .cse7 .cse8) .cse9 v_DerPreprocessor_3))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse11)) (select |c_#length| (select (select (store .cse12 .cse8 (store (select .cse12 .cse8) .cse9 v_DerPreprocessor_2)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse11))))))))) is different from false [2021-11-19 14:02:49,127 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:02:49,135 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:02:49,891 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-19 14:02:49,892 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 27 treesize of output 26 [2021-11-19 14:02:49,996 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 14:02:49,996 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:02:49,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [970155481] [2021-11-19 14:02:49,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [970155481] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:02:49,997 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:02:49,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 10] imperfect sequences [] total 17 [2021-11-19 14:02:49,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181462377] [2021-11-19 14:02:49,997 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:49,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-19 14:02:49,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:02:49,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-19 14:02:49,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=171, Unknown=3, NotChecked=84, Total=306 [2021-11-19 14:02:49,999 INFO L87 Difference]: Start difference. First operand 211 states and 233 transitions. Second operand has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:03:00,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:00,790 INFO L93 Difference]: Finished difference Result 212 states and 232 transitions. [2021-11-19 14:03:00,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 14:03:00,792 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2021-11-19 14:03:00,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:00,793 INFO L225 Difference]: With dead ends: 212 [2021-11-19 14:03:00,794 INFO L226 Difference]: Without dead ends: 212 [2021-11-19 14:03:00,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=94, Invalid=335, Unknown=3, NotChecked=120, Total=552 [2021-11-19 14:03:00,795 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 176 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 548 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:00,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 770 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 383 Invalid, 0 Unknown, 548 Unchecked, 6.4s Time] [2021-11-19 14:03:00,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-11-19 14:03:00,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 211. [2021-11-19 14:03:00,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 162 states have (on average 1.4135802469135803) internal successors, (229), 208 states have internal predecessors, (229), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:03:00,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 231 transitions. [2021-11-19 14:03:00,802 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 231 transitions. Word has length 66 [2021-11-19 14:03:00,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:00,803 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 231 transitions. [2021-11-19 14:03:00,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:03:00,803 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 231 transitions. [2021-11-19 14:03:00,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-19 14:03:00,804 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:00,804 INFO L514 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, 1, 1, 1, 1] [2021-11-19 14:03:00,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-19 14:03:01,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:03:01,019 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-19 14:03:01,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:01,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1724802401, now seen corresponding path program 1 times [2021-11-19 14:03:01,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:03:01,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1057386913] [2021-11-19 14:03:01,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:01,020 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:03:01,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:03:01,020 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:03:01,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-19 14:03:01,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:01,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 14:03:01,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:03:01,713 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 [2021-11-19 14:03:01,830 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-19 14:03:01,830 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 [2021-11-19 14:03:01,893 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 29 treesize of output 25 [2021-11-19 14:03:02,118 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-19 14:03:02,120 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 51 treesize of output 41 [2021-11-19 14:03:02,365 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-19 14:03:02,365 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 77 treesize of output 43 [2021-11-19 14:03:02,604 INFO L354 Elim1Store]: treesize reduction 53, result has 18.5 percent of original size [2021-11-19 14:03:02,604 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 79 treesize of output 45 [2021-11-19 14:03:02,704 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 57 treesize of output 30 [2021-11-19 14:03:02,793 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2021-11-19 14:03:02,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:03:02,980 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:02,981 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-19 14:03:15,301 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~j~0#1| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem146#1.offset| (_ BitVec 64)) (v_DerPreprocessor_4 (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) (bvadd |ULTIMATE.start_main_#t~mem146#1.offset| ((_ sign_extend 32) |ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_4))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))))))) (_ bv1 1)))) is different from false [2021-11-19 14:03:15,349 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:15,351 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-19 14:03:17,399 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem144#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_~j~0#1| (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem146#1.offset| (_ BitVec 64)) (v_DerPreprocessor_4 (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse2 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem144#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem144#1.base|) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem144#1.offset|) v_DerPreprocessor_5)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem146#1.offset| ((_ sign_extend 32) |ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_4)))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))))))))) (_ bv1 1)))) is different from false [2021-11-19 14:03:19,451 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem144#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_~j~0#1| (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem146#1.offset| (_ BitVec 64)) (v_DerPreprocessor_4 (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse2 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store |c_#memory_$Pointer$.base| .cse3 (store (select |c_#memory_$Pointer$.base| .cse3) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem144#1.offset|) v_DerPreprocessor_5))))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem146#1.offset| ((_ sign_extend 32) |ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_4)))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))))))))) (_ bv1 1)))) is different from false [2021-11-19 14:03:21,546 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~mem_track~0#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem144#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_~j~0#1| (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem146#1.offset| (_ BitVec 64)) (v_DerPreprocessor_4 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem143#1.base| (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse5 (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)))) (let ((.cse2 (bvadd .cse5 |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base|) (bvadd .cse5 |ULTIMATE.start_main_~mem_track~0#1.offset|) |ULTIMATE.start_main_#t~mem143#1.base|)))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse3 .cse4 (store (select .cse3 .cse4) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem144#1.offset|) v_DerPreprocessor_5)))))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem146#1.offset| ((_ sign_extend 32) |ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_4)))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2)))))))))) (_ bv1 1)))) is different from false [2021-11-19 14:05:48,784 INFO L354 Elim1Store]: treesize reduction -3, result has 103.7 percent of original size [2021-11-19 14:05:48,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 111 treesize of output 184 [2021-11-19 14:05:50,373 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 190 trivial. 2 not checked. [2021-11-19 14:05:50,374 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:05:50,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1057386913] [2021-11-19 14:05:50,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1057386913] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:05:50,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1540483930] [2021-11-19 14:05:50,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:05:50,375 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:05:50,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:05:50,376 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:05:50,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-19 14:05:51,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:05:51,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-19 14:05:51,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:05:51,432 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 13 treesize of output 11 [2021-11-19 14:05:51,509 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-19 14:05:51,510 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 25 treesize of output 32 [2021-11-19 14:05:51,557 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 29 treesize of output 25 [2021-11-19 14:05:51,858 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-19 14:05:51,858 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 60 treesize of output 41 [2021-11-19 14:05:52,681 INFO L354 Elim1Store]: treesize reduction 105, result has 27.6 percent of original size [2021-11-19 14:05:52,682 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 102 treesize of output 77 [2021-11-19 14:05:52,898 INFO L354 Elim1Store]: treesize reduction 53, result has 18.5 percent of original size [2021-11-19 14:05:52,898 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 79 treesize of output 45 [2021-11-19 14:05:53,000 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 57 treesize of output 30 [2021-11-19 14:05:53,016 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2021-11-19 14:05:53,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:05:53,070 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:05:53,071 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-19 14:05:55,097 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~j~0#1| (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem146#1.offset| (_ BitVec 64))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem146#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem146#1.base|) (bvadd |ULTIMATE.start_main_#t~mem146#1.offset| ((_ sign_extend 32) |ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_6)) |c_ULTIMATE.start_main_~argv~0#1.base|) (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))))))) is different from false [2021-11-19 14:05:57,125 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~j~0#1| (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem146#1.offset| (_ BitVec 64))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) (bvadd |ULTIMATE.start_main_#t~mem146#1.offset| ((_ sign_extend 32) |ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_6))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1)))))))) is different from false [2021-11-19 14:05:57,176 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:05:57,177 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-11-19 14:05:59,218 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem144#1.offset| (_ BitVec 64)) (v_DerPreprocessor_7 (_ BitVec 64)) (|ULTIMATE.start_main_~j~0#1| (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem146#1.offset| (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse2 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem144#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem144#1.base|) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem144#1.offset|) v_DerPreprocessor_7)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem146#1.offset| ((_ sign_extend 32) |ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_6)))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2)))))) (_ bv1 1)))) is different from false [2021-11-19 14:06:01,277 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem144#1.offset| (_ BitVec 64)) (v_DerPreprocessor_7 (_ BitVec 64)) (|ULTIMATE.start_main_~j~0#1| (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem146#1.offset| (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse2 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store |c_#memory_$Pointer$.base| .cse3 (store (select |c_#memory_$Pointer$.base| .cse3) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem144#1.offset|) v_DerPreprocessor_7))))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem146#1.offset| ((_ sign_extend 32) |ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_6)))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2)))))) (_ bv1 1)))) is different from false [2021-11-19 14:06:03,392 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~mem_track~0#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem144#1.offset| (_ BitVec 64)) (v_DerPreprocessor_7 (_ BitVec 64)) (|ULTIMATE.start_main_~j~0#1| (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem146#1.offset| (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse5 (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)))) (let ((.cse2 (bvadd .cse5 |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base|) (bvadd .cse5 |ULTIMATE.start_main_~mem_track~0#1.offset|) |c_ULTIMATE.start_main_#t~mem143#1.base|)))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse3 .cse4 (store (select .cse3 .cse4) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem144#1.offset|) v_DerPreprocessor_7)))))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem146#1.offset| ((_ sign_extend 32) |ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_6)))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2)))))))) (_ bv1 1)))) is different from false [2021-11-19 14:06:05,485 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~mem_track~0#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem144#1.offset| (_ BitVec 64)) (v_DerPreprocessor_7 (_ BitVec 64)) (|ULTIMATE.start_main_~j~0#1| (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem146#1.offset| (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse5 (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)))) (let ((.cse2 (bvadd .cse5 |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base|) (bvadd .cse5 |ULTIMATE.start_main_~mem_track~0#1.offset|) (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse3 .cse4 (store (select .cse3 .cse4) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem144#1.offset|) v_DerPreprocessor_7)))))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem146#1.offset| ((_ sign_extend 32) |ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_6)))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2)))))))))) (_ bv1 1)))) is different from false [2021-11-19 14:06:13,782 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 3 not checked. [2021-11-19 14:06:13,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1540483930] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:06:13,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953751657] [2021-11-19 14:06:13,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:13,783 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:06:13,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:06:13,785 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:06:13,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-19 14:06:13,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:14,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 14:06:14,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:06:14,101 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 [2021-11-19 14:06:14,156 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 14:06:14,156 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 18 treesize of output 18 [2021-11-19 14:06:14,268 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 [2021-11-19 14:06:14,512 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-19 14:06:14,512 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 34 treesize of output 33 [2021-11-19 14:06:16,788 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-19 14:06:16,788 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 60 treesize of output 35 [2021-11-19 14:06:17,029 INFO L354 Elim1Store]: treesize reduction 53, result has 18.5 percent of original size [2021-11-19 14:06:17,030 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 46 [2021-11-19 14:06:17,254 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 44 treesize of output 17 [2021-11-19 14:06:17,290 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 14:06:17,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:06:17,382 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:06:17,387 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-19 14:06:17,436 INFO L354 Elim1Store]: treesize reduction 5, result has 82.1 percent of original size [2021-11-19 14:06:17,436 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 39 treesize of output 38 [2021-11-19 14:06:35,973 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_8 (_ BitVec 64)) (|ULTIMATE.start_main_~j~0#1| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem146#1.offset| (_ BitVec 64))) (let ((.cse1 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (= .cse0 (select (select (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) (bvadd |ULTIMATE.start_main_#t~mem146#1.offset| ((_ sign_extend 32) |ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_8)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))))) is different from false [2021-11-19 14:06:36,027 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:06:36,028 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-11-19 14:06:38,093 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem144#1.offset| (_ BitVec 64)) (v_DerPreprocessor_9 (_ BitVec 64)) (v_DerPreprocessor_8 (_ BitVec 64)) (|ULTIMATE.start_main_~j~0#1| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem146#1.offset| (_ BitVec 64))) (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem144#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem144#1.base|) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem144#1.offset|) v_DerPreprocessor_9))) (.cse2 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 (store (select .cse1 .cse0) (bvadd |ULTIMATE.start_main_#t~mem146#1.offset| ((_ sign_extend 32) |ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_8)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))))) is different from false [2021-11-19 14:06:52,762 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~mem_track~0#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem144#1.offset| (_ BitVec 64)) (v_DerPreprocessor_9 (_ BitVec 64)) (v_DerPreprocessor_8 (_ BitVec 64)) (|ULTIMATE.start_main_~j~0#1| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem146#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem143#1.base| (_ BitVec 64))) (let ((.cse5 (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)))) (let ((.cse2 (bvadd .cse5 |c_ULTIMATE.start_main_~argv~0#1.offset|))) (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base|) (bvadd .cse5 |ULTIMATE.start_main_~mem_track~0#1.offset|) |ULTIMATE.start_main_#t~mem143#1.base|)))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse3 .cse4 (store (select .cse3 .cse4) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem144#1.offset|) v_DerPreprocessor_9)))))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem146#1.offset| ((_ sign_extend 32) |ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_8)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2) .cse1)))))) is different from false [2021-11-19 14:06:55,645 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-19 14:06:55,645 INFO L186 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2021-11-19 14:06:55,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11, 11] total 29 [2021-11-19 14:06:55,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252452081] [2021-11-19 14:06:55,646 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2021-11-19 14:06:55,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-19 14:06:55,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:06:55,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-19 14:06:55,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=611, Unknown=32, NotChecked=832, Total=1640 [2021-11-19 14:06:55,650 INFO L87 Difference]: Start difference. First operand 211 states and 231 transitions. Second operand has 30 states, 29 states have (on average 2.4482758620689653) internal successors, (71), 30 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:07:05,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:07:05,787 INFO L93 Difference]: Finished difference Result 218 states and 239 transitions. [2021-11-19 14:07:05,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 14:07:05,788 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.4482758620689653) internal successors, (71), 30 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2021-11-19 14:07:05,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:07:05,790 INFO L225 Difference]: With dead ends: 218 [2021-11-19 14:07:05,790 INFO L226 Difference]: Without dead ends: 218 [2021-11-19 14:07:05,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 325 SyntacticMatches, 7 SemanticMatches, 42 ConstructedPredicates, 13 IntricatePredicates, 2 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 90.4s TimeCoverageRelationStatistics Valid=207, Invalid=741, Unknown=34, NotChecked=910, Total=1892 [2021-11-19 14:07:05,791 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 26 mSDsluCounter, 1848 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2002 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1028 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:07:05,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 2002 Invalid, 1256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 222 Invalid, 0 Unknown, 1028 Unchecked, 1.5s Time] [2021-11-19 14:07:05,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-11-19 14:07:05,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 216. [2021-11-19 14:07:05,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 167 states have (on average 1.4131736526946108) internal successors, (236), 213 states have internal predecessors, (236), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:07:05,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 238 transitions. [2021-11-19 14:07:05,800 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 238 transitions. Word has length 71 [2021-11-19 14:07:05,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:07:05,800 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 238 transitions. [2021-11-19 14:07:05,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.4482758620689653) internal successors, (71), 30 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:07:05,801 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 238 transitions. [2021-11-19 14:07:05,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-19 14:07:05,802 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:07:05,802 INFO L514 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, 1, 1, 1, 1] [2021-11-19 14:07:05,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-11-19 14:07:06,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-19 14:07:06,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2021-11-19 14:07:06,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:07:06,419 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-19 14:07:06,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:07:06,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1724802400, now seen corresponding path program 1 times [2021-11-19 14:07:06,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:07:06,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [617979705] [2021-11-19 14:07:06,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:07:06,420 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:07:06,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:07:06,421 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:07:06,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a9a8633-cbd7-4387-8b0f-f10366245388/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-19 14:07:06,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:07:06,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-19 14:07:06,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:07:06,974 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 [2021-11-19 14:07:07,030 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 [2021-11-19 14:07:07,062 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 14:07:07,062 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 16 treesize of output 16 [2021-11-19 14:07:07,124 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 26 treesize of output 22 [2021-11-19 14:07:07,149 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 16 treesize of output 12 [2021-11-19 14:07:07,358 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-19 14:07:07,358 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 76 treesize of output 66 [2021-11-19 14:07:07,405 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-19 14:07:07,406 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 60 treesize of output 59 [2021-11-19 14:07:07,669 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-19 14:07:07,669 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 132 treesize of output 71 [2021-11-19 14:07:07,703 INFO L354 Elim1Store]: treesize reduction 77, result has 13.5 percent of original size [2021-11-19 14:07:07,704 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 86 treesize of output 43 [2021-11-19 14:07:08,075 INFO L354 Elim1Store]: treesize reduction 53, result has 18.5 percent of original size [2021-11-19 14:07:08,075 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 136 treesize of output 75 [2021-11-19 14:07:08,116 INFO L354 Elim1Store]: treesize reduction 80, result has 13.0 percent of original size [2021-11-19 14:07:08,116 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 88 treesize of output 43 [2021-11-19 14:07:08,344 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 64 treesize of output 37 [2021-11-19 14:07:08,349 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 34 treesize of output 16 [2021-11-19 14:07:08,417 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 14:07:08,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:07:10,270 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:07:10,271 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-11-19 14:07:10,274 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:07:10,279 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-11-19 14:07:12,436 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_11 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem146#1.offset| (_ BitVec 64)) (v_DerPreprocessor_10 (_ BitVec 64))) (let ((.cse0 (bvadd |ULTIMATE.start_main_#t~mem146#1.offset| ((_ sign_extend 32) |c_ULTIMATE.start_main_~j~0#1|))) (.cse1 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (bvule (bvadd ((_ sign_extend 32) (bvadd |c_ULTIMATE.start_main_~j~0#1| (_ bv1 32))) (_ bv1 64) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem146#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem146#1.base|) .cse0 v_DerPreprocessor_10)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem146#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem146#1.base|) .cse0 v_DerPreprocessor_11)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))))) (forall ((|ULTIMATE.start_main_#t~mem146#1.offset| (_ BitVec 64)) (v_DerPreprocessor_10 (_ BitVec 64))) (let ((.cse2 ((_ sign_extend 32) (bvadd |c_ULTIMATE.start_main_~j~0#1| (_ bv1 32)))) (.cse3 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem146#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem146#1.base|) (bvadd |ULTIMATE.start_main_#t~mem146#1.offset| ((_ sign_extend 32) |c_ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_10)) |c_ULTIMATE.start_main_~argv~0#1.base|) (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|)))) (bvule (bvadd .cse2 .cse3) (bvadd .cse2 (_ bv1 64) .cse3))))) is different from false [2021-11-19 14:07:14,592 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem146#1.offset| (_ BitVec 64)) (v_DerPreprocessor_10 (_ BitVec 64))) (let ((.cse0 ((_ sign_extend 32) (bvadd |c_ULTIMATE.start_main_~j~0#1| (_ bv1 32)))) (.cse1 (let ((.cse3 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3))) (store |c_#memory_$Pointer$.offset| .cse2 (store (select |c_#memory_$Pointer$.offset| .cse2) (bvadd |ULTIMATE.start_main_#t~mem146#1.offset| ((_ sign_extend 32) |c_ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_10))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3)))) (bvule (bvadd .cse0 .cse1) (bvadd .cse0 .cse1 (_ bv1 64))))) (forall ((v_DerPreprocessor_11 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem146#1.offset| (_ BitVec 64)) (v_DerPreprocessor_10 (_ BitVec 64))) (let ((.cse6 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (let ((.cse4 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse6)) (.cse5 (bvadd |ULTIMATE.start_main_#t~mem146#1.offset| ((_ sign_extend 32) |c_ULTIMATE.start_main_~j~0#1|)))) (bvule (bvadd ((_ sign_extend 32) (bvadd |c_ULTIMATE.start_main_~j~0#1| (_ bv1 32))) (select (select (store |c_#memory_$Pointer$.offset| .cse4 (store (select |c_#memory_$Pointer$.offset| .cse4) .cse5 v_DerPreprocessor_10)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse6) (_ bv1 64)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse4 (store (select |c_#memory_$Pointer$.base| .cse4) .cse5 v_DerPreprocessor_11)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse6))))))) is different from false [2021-11-19 14:07:16,842 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem146#1.offset| (_ BitVec 64)) (v_DerPreprocessor_10 (_ BitVec 64))) (let ((.cse0 ((_ sign_extend 32) (_ bv1 32))) (.cse1 (let ((.cse3 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3))) (store |c_#memory_$Pointer$.offset| .cse2 (store (select |c_#memory_$Pointer$.offset| .cse2) (bvadd ((_ sign_extend 32) (_ bv0 32)) |ULTIMATE.start_main_#t~mem146#1.offset|) v_DerPreprocessor_10))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3)))) (bvule (bvadd .cse0 .cse1) (bvadd .cse0 (_ bv1 64) .cse1)))) (forall ((v_DerPreprocessor_11 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem146#1.offset| (_ BitVec 64)) (v_DerPreprocessor_10 (_ BitVec 64))) (let ((.cse6 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (let ((.cse4 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse6)) (.cse5 (bvadd ((_ sign_extend 32) (_ bv0 32)) |ULTIMATE.start_main_#t~mem146#1.offset|))) (bvule (bvadd ((_ sign_extend 32) (_ bv1 32)) (_ bv1 64) (select (select (store |c_#memory_$Pointer$.offset| .cse4 (store (select |c_#memory_$Pointer$.offset| .cse4) .cse5 v_DerPreprocessor_10)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse6)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse4 (store (select |c_#memory_$Pointer$.base| .cse4) .cse5 v_DerPreprocessor_11)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse6))))))) is different from false [2021-11-19 14:07:16,878 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:07:16,879 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 293 [2021-11-19 14:07:16,882 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:07:16,883 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 332 [2021-11-19 14:07:19,022 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_13 (_ BitVec 64)) (v_DerPreprocessor_12 (_ BitVec 64)) (v_prenex_2 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem144#1.offset| (_ BitVec 64)) (v_prenex_1 (_ BitVec 64))) (let ((.cse0 (let ((.cse5 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse4 (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem144#1.offset|))) (let ((.cse2 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem144#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem144#1.base|) .cse4 v_DerPreprocessor_13))) (.cse3 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem144#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem144#1.base|) .cse4 v_DerPreprocessor_12)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse5))) (store .cse2 .cse3 (store (select .cse2 .cse3) (bvadd ((_ sign_extend 32) (_ bv0 32)) v_prenex_1) v_prenex_2)))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse5))) (.cse1 ((_ sign_extend 32) (_ bv1 32)))) (bvule (bvadd .cse0 .cse1) (bvadd .cse0 .cse1 (_ bv1 64))))) (forall ((v_DerPreprocessor_13 (_ BitVec 64)) (v_DerPreprocessor_11 (_ BitVec 64)) (v_DerPreprocessor_12 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem144#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem146#1.offset| (_ BitVec 64)) (v_DerPreprocessor_10 (_ BitVec 64))) (let ((.cse9 (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem144#1.offset|))) (let ((.cse11 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem144#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem144#1.base|) .cse9 v_DerPreprocessor_12))) (.cse10 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (let ((.cse7 (select (select .cse11 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse10)) (.cse8 (bvadd ((_ sign_extend 32) (_ bv0 32)) |ULTIMATE.start_main_#t~mem146#1.offset|))) (bvule (bvadd ((_ sign_extend 32) (_ bv1 32)) (_ bv1 64) (select (select (let ((.cse6 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem144#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem144#1.base|) .cse9 v_DerPreprocessor_13)))) (store .cse6 .cse7 (store (select .cse6 .cse7) .cse8 v_DerPreprocessor_10))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse10)) (select |c_#length| (select (select (store .cse11 .cse7 (store (select .cse11 .cse7) .cse8 v_DerPreprocessor_11)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse10)))))))) is different from false [2021-11-19 14:07:21,205 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_13 (_ BitVec 64)) (v_DerPreprocessor_12 (_ BitVec 64)) (v_prenex_2 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem144#1.offset| (_ BitVec 64)) (v_prenex_1 (_ BitVec 64))) (let ((.cse0 ((_ sign_extend 32) (_ bv1 32))) (.cse1 (let ((.cse6 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse4 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse6)) (.cse5 (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem144#1.offset|))) (let ((.cse2 (store |c_#memory_$Pointer$.offset| .cse4 (store (select |c_#memory_$Pointer$.offset| .cse4) .cse5 v_DerPreprocessor_13))) (.cse3 (select (select (store |c_#memory_$Pointer$.base| .cse4 (store (select |c_#memory_$Pointer$.base| .cse4) .cse5 v_DerPreprocessor_12)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse6))) (store .cse2 .cse3 (store (select .cse2 .cse3) (bvadd ((_ sign_extend 32) (_ bv0 32)) v_prenex_1) v_prenex_2)))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse6)))) (bvule (bvadd .cse0 .cse1) (bvadd .cse0 (_ bv1 64) .cse1)))) (forall ((v_DerPreprocessor_13 (_ BitVec 64)) (v_DerPreprocessor_11 (_ BitVec 64)) (v_DerPreprocessor_12 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem144#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem146#1.offset| (_ BitVec 64)) (v_DerPreprocessor_10 (_ BitVec 64))) (let ((.cse12 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (let ((.cse10 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse12)) (.cse11 (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem144#1.offset|))) (let ((.cse13 (store |c_#memory_$Pointer$.base| .cse10 (store (select |c_#memory_$Pointer$.base| .cse10) .cse11 v_DerPreprocessor_12)))) (let ((.cse8 (select (select .cse13 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse12)) (.cse9 (bvadd ((_ sign_extend 32) (_ bv0 32)) |ULTIMATE.start_main_#t~mem146#1.offset|))) (bvule (bvadd (select (select (let ((.cse7 (store |c_#memory_$Pointer$.offset| .cse10 (store (select |c_#memory_$Pointer$.offset| .cse10) .cse11 v_DerPreprocessor_13)))) (store .cse7 .cse8 (store (select .cse7 .cse8) .cse9 v_DerPreprocessor_10))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse12) ((_ sign_extend 32) (_ bv1 32)) (_ bv1 64)) (select |c_#length| (select (select (store .cse13 .cse8 (store (select .cse13 .cse8) .cse9 v_DerPreprocessor_11)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse12))))))))) is different from false [2021-11-19 14:07:23,721 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_13 (_ BitVec 64)) (|ULTIMATE.start_main_~mem_track~0#1.offset| (_ BitVec 64)) (v_DerPreprocessor_11 (_ BitVec 64)) (v_DerPreprocessor_12 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem144#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem146#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem143#1.offset| (_ BitVec 64)) (v_DerPreprocessor_10 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem143#1.base| (_ BitVec 64))) (let ((.cse10 (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)))) (let ((.cse6 (bvadd .cse10 |ULTIMATE.start_main_~mem_track~0#1.offset|))) (let ((.cse9 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base|) .cse6 |ULTIMATE.start_main_#t~mem143#1.base|))) (.cse7 (bvadd .cse10 |c_ULTIMATE.start_main_~argv~0#1.offset|))) (let ((.cse4 (select (select .cse9 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse7)) (.cse5 (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem144#1.offset|))) (let ((.cse8 (store .cse9 .cse4 (store (select .cse9 .cse4) .cse5 v_DerPreprocessor_12)))) (let ((.cse1 (select (select .cse8 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse7)) (.cse2 (bvadd ((_ sign_extend 32) (_ bv0 32)) |ULTIMATE.start_main_#t~mem146#1.offset|))) (bvule (bvadd ((_ sign_extend 32) (_ bv1 32)) (select (select (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~mem_track~0#1.base|) .cse6 |ULTIMATE.start_main_#t~mem143#1.offset|)))) (store .cse3 .cse4 (store (select .cse3 .cse4) .cse5 v_DerPreprocessor_13))))) (store .cse0 .cse1 (store (select .cse0 .cse1) .cse2 v_DerPreprocessor_10))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse7) (_ bv1 64)) (select |c_#length| (select (select (store .cse8 .cse1 (store (select .cse8 .cse1) .cse2 v_DerPreprocessor_11)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse7)))))))))) (forall ((v_DerPreprocessor_13 (_ BitVec 64)) (|ULTIMATE.start_main_~mem_track~0#1.offset| (_ BitVec 64)) (v_DerPreprocessor_12 (_ BitVec 64)) (v_prenex_2 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem144#1.offset| (_ BitVec 64)) (v_prenex_1 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem143#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem143#1.base| (_ BitVec 64))) (let ((.cse11 ((_ sign_extend 32) (_ bv1 32))) (.cse12 (let ((.cse21 (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)))) (let ((.cse18 (bvadd .cse21 |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse20 (bvadd .cse21 |ULTIMATE.start_main_~mem_track~0#1.offset|))) (let ((.cse15 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base|) .cse20 |ULTIMATE.start_main_#t~mem143#1.base|)))) (let ((.cse16 (select (select .cse15 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse18)) (.cse17 (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem144#1.offset|))) (let ((.cse13 (let ((.cse19 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~mem_track~0#1.base|) .cse20 |ULTIMATE.start_main_#t~mem143#1.offset|)))) (store .cse19 .cse16 (store (select .cse19 .cse16) .cse17 v_DerPreprocessor_13)))) (.cse14 (select (select (store .cse15 .cse16 (store (select .cse15 .cse16) .cse17 v_DerPreprocessor_12)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse18))) (store .cse13 .cse14 (store (select .cse13 .cse14) (bvadd ((_ sign_extend 32) (_ bv0 32)) v_prenex_1) v_prenex_2)))))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse18))))) (bvule (bvadd .cse11 .cse12) (bvadd .cse11 (_ bv1 64) .cse12))))) is different from false [2021-11-19 14:07:25,751 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_13 (_ BitVec 64)) (|ULTIMATE.start_main_~mem_track~0#1.offset| (_ BitVec 64)) (v_DerPreprocessor_11 (_ BitVec 64)) (v_DerPreprocessor_12 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem144#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem146#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem143#1.offset| (_ BitVec 64)) (v_DerPreprocessor_10 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem143#1.base| (_ BitVec 64))) (let ((.cse10 (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)))) (let ((.cse6 (bvadd .cse10 |ULTIMATE.start_main_~mem_track~0#1.offset|))) (let ((.cse9 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base|) .cse6 |ULTIMATE.start_main_#t~mem143#1.base|))) (.cse7 (bvadd .cse10 |c_ULTIMATE.start_main_~argv~0#1.offset|))) (let ((.cse4 (select (select .cse9 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse7)) (.cse5 (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem144#1.offset|))) (let ((.cse8 (store .cse9 .cse4 (store (select .cse9 .cse4) .cse5 v_DerPreprocessor_12)))) (let ((.cse1 (select (select .cse8 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse7)) (.cse2 (bvadd ((_ sign_extend 32) (_ bv0 32)) |ULTIMATE.start_main_#t~mem146#1.offset|))) (bvule (bvadd ((_ sign_extend 32) (_ bv1 32)) (select (select (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~mem_track~0#1.base|) .cse6 |ULTIMATE.start_main_#t~mem143#1.offset|)))) (store .cse3 .cse4 (store (select .cse3 .cse4) .cse5 v_DerPreprocessor_13))))) (store .cse0 .cse1 (store (select .cse0 .cse1) .cse2 v_DerPreprocessor_10))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse7) (_ bv1 64)) (select |c_#length| (select (select (store .cse8 .cse1 (store (select .cse8 .cse1) .cse2 v_DerPreprocessor_11)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse7)))))))))) (forall ((v_DerPreprocessor_13 (_ BitVec 64)) (|ULTIMATE.start_main_~mem_track~0#1.offset| (_ BitVec 64)) (v_DerPreprocessor_12 (_ BitVec 64)) (v_prenex_2 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem144#1.offset| (_ BitVec 64)) (v_prenex_1 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem143#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem143#1.base| (_ BitVec 64))) (let ((.cse11 ((_ sign_extend 32) (_ bv1 32))) (.cse12 (let ((.cse21 (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)))) (let ((.cse18 (bvadd .cse21 |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse20 (bvadd .cse21 |ULTIMATE.start_main_~mem_track~0#1.offset|))) (let ((.cse15 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base|) .cse20 |ULTIMATE.start_main_#t~mem143#1.base|)))) (let ((.cse16 (select (select .cse15 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse18)) (.cse17 (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem144#1.offset|))) (let ((.cse13 (let ((.cse19 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~mem_track~0#1.base|) .cse20 |ULTIMATE.start_main_#t~mem143#1.offset|)))) (store .cse19 .cse16 (store (select .cse19 .cse16) .cse17 v_DerPreprocessor_13)))) (.cse14 (select (select (store .cse15 .cse16 (store (select .cse15 .cse16) .cse17 v_DerPreprocessor_12)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse18))) (store .cse13 .cse14 (store (select .cse13 .cse14) (bvadd ((_ sign_extend 32) (_ bv0 32)) v_prenex_1) v_prenex_2)))))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse18))))) (bvule (bvadd .cse11 .cse12) (bvadd .cse11 (_ bv1 64) .cse12))))) is different from true