./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/busybox-1.22.0/basename-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/basename-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c899d9f75a53a80fe85551911016ababc48d03a22c1656000243377f27dbc4c0 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:14:40,682 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:14:40,684 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:14:40,720 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:14:40,721 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:14:40,723 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:14:40,725 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:14:40,727 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:14:40,729 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:14:40,730 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:14:40,732 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:14:40,733 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:14:40,734 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:14:40,735 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:14:40,737 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:14:40,739 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:14:40,740 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:14:40,742 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:14:40,744 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:14:40,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:14:40,749 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:14:40,751 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:14:40,753 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:14:40,754 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:14:40,759 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:14:40,760 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:14:40,760 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:14:40,762 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:14:40,763 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:14:40,764 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:14:40,765 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:14:40,766 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:14:40,767 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:14:40,769 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:14:40,770 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:14:40,771 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:14:40,772 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:14:40,773 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:14:40,773 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:14:40,775 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:14:40,776 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:14:40,777 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2022-11-02 20:14:40,807 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:14:40,807 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:14:40,808 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:14:40,808 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:14:40,809 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:14:40,810 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:14:40,811 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:14:40,811 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:14:40,812 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:14:40,812 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:14:40,812 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:14:40,813 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:14:40,813 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:14:40,813 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-02 20:14:40,814 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-02 20:14:40,814 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-02 20:14:40,814 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:14:40,815 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 20:14:40,815 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:14:40,815 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:14:40,816 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:14:40,816 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:14:40,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:14:40,817 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:14:40,817 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:14:40,818 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:14:40,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:14:40,818 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c899d9f75a53a80fe85551911016ababc48d03a22c1656000243377f27dbc4c0 [2022-11-02 20:14:41,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:14:41,238 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:14:41,242 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:14:41,244 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:14:41,245 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:14:41,248 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/busybox-1.22.0/basename-2.i [2022-11-02 20:14:41,335 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/data/22d059fed/bcdec6352e564c66b748d71d9a25edc8/FLAGf4e65dbf4 [2022-11-02 20:14:42,123 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:14:42,125 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/sv-benchmarks/c/busybox-1.22.0/basename-2.i [2022-11-02 20:14:42,155 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/data/22d059fed/bcdec6352e564c66b748d71d9a25edc8/FLAGf4e65dbf4 [2022-11-02 20:14:42,288 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/data/22d059fed/bcdec6352e564c66b748d71d9a25edc8 [2022-11-02 20:14:42,293 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:14:42,296 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:14:42,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:14:42,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:14:42,305 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:14:42,306 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:14:42" (1/1) ... [2022-11-02 20:14:42,308 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2575fd9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:42, skipping insertion in model container [2022-11-02 20:14:42,308 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:14:42" (1/1) ... [2022-11-02 20:14:42,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:14:42,418 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:14:43,354 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2022-11-02 20:14:43,453 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:14:43,469 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-11-02 20:14:43,470 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@eba727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:43, skipping insertion in model container [2022-11-02 20:14:43,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:14:43,471 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-02 20:14:43,475 INFO L158 Benchmark]: Toolchain (without parser) took 1176.38ms. Allocated memory was 90.2MB in the beginning and 132.1MB in the end (delta: 41.9MB). Free memory was 50.8MB in the beginning and 97.4MB in the end (delta: -46.6MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. [2022-11-02 20:14:43,476 INFO L158 Benchmark]: CDTParser took 0.68ms. Allocated memory is still 90.2MB. Free memory is still 69.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:14:43,479 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1170.51ms. Allocated memory was 90.2MB in the beginning and 132.1MB in the end (delta: 41.9MB). Free memory was 50.6MB in the beginning and 97.4MB in the end (delta: -46.9MB). Peak memory consumption was 4.6MB. Max. memory is 16.1GB. [2022-11-02 20:14:43,482 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.68ms. Allocated memory is still 90.2MB. Free memory is still 69.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1170.51ms. Allocated memory was 90.2MB in the beginning and 132.1MB in the end (delta: 41.9MB). Free memory was 50.6MB in the beginning and 97.4MB in the end (delta: -46.9MB). Peak memory consumption was 4.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1515]: Unsupported Syntax Found a cast between two array/pointer types of different sizes 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/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/basename-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c899d9f75a53a80fe85551911016ababc48d03a22c1656000243377f27dbc4c0 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:14:46,210 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:14:46,213 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:14:46,248 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:14:46,249 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:14:46,250 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:14:46,252 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:14:46,254 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:14:46,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:14:46,258 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:14:46,260 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:14:46,261 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:14:46,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:14:46,263 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:14:46,265 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:14:46,267 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:14:46,268 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:14:46,270 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:14:46,272 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:14:46,275 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:14:46,277 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:14:46,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:14:46,281 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:14:46,282 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:14:46,287 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:14:46,288 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:14:46,288 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:14:46,290 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:14:46,291 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:14:46,292 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:14:46,293 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:14:46,294 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:14:46,295 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:14:46,296 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:14:46,298 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:14:46,299 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:14:46,300 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:14:46,300 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:14:46,301 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:14:46,302 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:14:46,303 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:14:46,305 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf [2022-11-02 20:14:46,348 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:14:46,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:14:46,350 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:14:46,351 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:14:46,351 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:14:46,352 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:14:46,352 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:14:46,353 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:14:46,353 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:14:46,353 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:14:46,353 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:14:46,354 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:14:46,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:14:46,354 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-02 20:14:46,354 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-02 20:14:46,355 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-02 20:14:46,355 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:14:46,355 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 20:14:46,355 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 20:14:46,355 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 20:14:46,356 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:14:46,356 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:14:46,356 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:14:46,356 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:14:46,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:14:46,357 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:14:46,357 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:14:46,357 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 20:14:46,358 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 20:14:46,358 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 20:14:46,358 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_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c899d9f75a53a80fe85551911016ababc48d03a22c1656000243377f27dbc4c0 [2022-11-02 20:14:46,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:14:46,893 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:14:46,897 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:14:46,898 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:14:46,899 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:14:46,901 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/busybox-1.22.0/basename-2.i [2022-11-02 20:14:46,989 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/data/03eb3f1e2/03eb688f3c36462998b7e703f525c5aa/FLAG65b2ce12b [2022-11-02 20:14:47,869 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:14:47,869 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/sv-benchmarks/c/busybox-1.22.0/basename-2.i [2022-11-02 20:14:47,891 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/data/03eb3f1e2/03eb688f3c36462998b7e703f525c5aa/FLAG65b2ce12b [2022-11-02 20:14:48,056 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/data/03eb3f1e2/03eb688f3c36462998b7e703f525c5aa [2022-11-02 20:14:48,060 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:14:48,062 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:14:48,064 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:14:48,064 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:14:48,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:14:48,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:14:48" (1/1) ... [2022-11-02 20:14:48,072 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53516692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:48, skipping insertion in model container [2022-11-02 20:14:48,072 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:14:48" (1/1) ... [2022-11-02 20:14:48,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:14:48,170 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:14:48,975 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2022-11-02 20:14:49,039 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:14:49,056 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-02 20:14:49,071 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:14:49,177 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2022-11-02 20:14:49,255 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:14:49,273 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:14:49,382 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2022-11-02 20:14:49,430 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:14:49,563 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:14:49,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:49 WrapperNode [2022-11-02 20:14:49,565 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:14:49,567 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:14:49,567 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:14:49,567 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:14:49,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:49" (1/1) ... [2022-11-02 20:14:49,648 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:49" (1/1) ... [2022-11-02 20:14:49,700 INFO L138 Inliner]: procedures = 353, calls = 114, calls flagged for inlining = 10, calls inlined = 9, statements flattened = 386 [2022-11-02 20:14:49,700 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:14:49,701 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:14:49,701 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:14:49,701 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:14:49,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:49" (1/1) ... [2022-11-02 20:14:49,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:49" (1/1) ... [2022-11-02 20:14:49,721 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:49" (1/1) ... [2022-11-02 20:14:49,722 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:49" (1/1) ... [2022-11-02 20:14:49,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:49" (1/1) ... [2022-11-02 20:14:49,781 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:49" (1/1) ... [2022-11-02 20:14:49,788 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:49" (1/1) ... [2022-11-02 20:14:49,808 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:49" (1/1) ... [2022-11-02 20:14:49,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:14:49,818 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:14:49,824 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:14:49,824 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:14:49,825 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:49" (1/1) ... [2022-11-02 20:14:49,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:14:49,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:14:49,859 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:14:49,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:14:49,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-02 20:14:49,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-02 20:14:49,910 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-02 20:14:49,911 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-02 20:14:49,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:14:49,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-02 20:14:49,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:14:49,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-02 20:14:49,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-02 20:14:49,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-02 20:14:49,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:14:49,929 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2022-11-02 20:14:49,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:14:49,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:14:49,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:14:49,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:14:50,465 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:14:50,467 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:14:52,480 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:14:52,491 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:14:52,491 INFO L300 CfgBuilder]: Removed 9 assume(true) statements. [2022-11-02 20:14:52,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:14:52 BoogieIcfgContainer [2022-11-02 20:14:52,495 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:14:52,498 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:14:52,498 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:14:52,502 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:14:52,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:14:48" (1/3) ... [2022-11-02 20:14:52,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28a2bf98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:14:52, skipping insertion in model container [2022-11-02 20:14:52,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:49" (2/3) ... [2022-11-02 20:14:52,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28a2bf98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:14:52, skipping insertion in model container [2022-11-02 20:14:52,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:14:52" (3/3) ... [2022-11-02 20:14:52,506 INFO L112 eAbstractionObserver]: Analyzing ICFG basename-2.i [2022-11-02 20:14:52,553 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:14:52,553 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 94 error locations. [2022-11-02 20:14:52,651 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:14:52,659 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3e50c3c6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:14:52,659 INFO L358 AbstractCegarLoop]: Starting to check reachability of 94 error locations. [2022-11-02 20:14:52,664 INFO L276 IsEmpty]: Start isEmpty. Operand has 245 states, 147 states have (on average 1.945578231292517) internal successors, (286), 241 states have internal predecessors, (286), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:14:52,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-02 20:14:52,671 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:52,672 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-02 20:14:52,673 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-11-02 20:14:52,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:52,680 INFO L85 PathProgramCache]: Analyzing trace with hash 37801, now seen corresponding path program 1 times [2022-11-02 20:14:52,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:14:52,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [625172105] [2022-11-02 20:14:52,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:52,698 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:14:52,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:14:52,700 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:14:52,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 20:14:52,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:52,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:14:52,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:14:52,994 INFO L390 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 7 [2022-11-02 20:14:53,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:53,012 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:14:53,013 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:14:53,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [625172105] [2022-11-02 20:14:53,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [625172105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:53,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:53,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:14:53,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786649556] [2022-11-02 20:14:53,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:53,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:14:53,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:14:53,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:14:53,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:53,094 INFO L87 Difference]: Start difference. First operand has 245 states, 147 states have (on average 1.945578231292517) internal successors, (286), 241 states have internal predecessors, (286), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) 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) [2022-11-02 20:14:53,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:53,903 INFO L93 Difference]: Finished difference Result 253 states and 287 transitions. [2022-11-02 20:14:53,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:14:53,907 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 [2022-11-02 20:14:53,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:53,929 INFO L225 Difference]: With dead ends: 253 [2022-11-02 20:14:53,930 INFO L226 Difference]: Without dead ends: 251 [2022-11-02 20:14:53,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:53,941 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 241 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:53,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 207 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:14:53,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-11-02 20:14:54,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 235. [2022-11-02 20:14:54,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 142 states have (on average 1.8591549295774648) internal successors, (264), 231 states have internal predecessors, (264), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:14:54,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 268 transitions. [2022-11-02 20:14:54,054 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 268 transitions. Word has length 3 [2022-11-02 20:14:54,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:54,054 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 268 transitions. [2022-11-02 20:14:54,055 INFO L496 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) [2022-11-02 20:14:54,055 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 268 transitions. [2022-11-02 20:14:54,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-02 20:14:54,056 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:54,056 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-02 20:14:54,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:14:54,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:14:54,271 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-11-02 20:14:54,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:54,271 INFO L85 PathProgramCache]: Analyzing trace with hash 37802, now seen corresponding path program 1 times [2022-11-02 20:14:54,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:14:54,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [737454312] [2022-11-02 20:14:54,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:54,273 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:14:54,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:14:54,278 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:14:54,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 20:14:54,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:54,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:14:54,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:14:54,513 INFO L390 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 [2022-11-02 20:14:54,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:54,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:14:54,533 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:14:54,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [737454312] [2022-11-02 20:14:54,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [737454312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:54,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:54,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:14:54,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079965071] [2022-11-02 20:14:54,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:54,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:14:54,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:14:54,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:14:54,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:54,544 INFO L87 Difference]: Start difference. First operand 235 states and 268 transitions. 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) [2022-11-02 20:14:55,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:55,752 INFO L93 Difference]: Finished difference Result 234 states and 267 transitions. [2022-11-02 20:14:55,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:14:55,754 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 [2022-11-02 20:14:55,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:55,755 INFO L225 Difference]: With dead ends: 234 [2022-11-02 20:14:55,756 INFO L226 Difference]: Without dead ends: 234 [2022-11-02 20:14:55,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:55,757 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 13 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:55,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 430 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 20:14:55,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-11-02 20:14:55,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2022-11-02 20:14:55,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 142 states have (on average 1.852112676056338) internal successors, (263), 230 states have internal predecessors, (263), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:14:55,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 267 transitions. [2022-11-02 20:14:55,772 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 267 transitions. Word has length 3 [2022-11-02 20:14:55,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:55,772 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 267 transitions. [2022-11-02 20:14:55,773 INFO L496 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) [2022-11-02 20:14:55,773 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 267 transitions. [2022-11-02 20:14:55,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-02 20:14:55,774 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:55,774 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-02 20:14:55,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:14:55,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:14:55,992 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-11-02 20:14:55,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:55,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1126113961, now seen corresponding path program 1 times [2022-11-02 20:14:55,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:14:55,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [50165478] [2022-11-02 20:14:55,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:55,995 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:14:55,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:14:56,000 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:14:56,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 20:14:56,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:56,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:14:56,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:14:56,264 INFO L390 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 [2022-11-02 20:14:56,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:56,365 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:14:56,365 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:14:56,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [50165478] [2022-11-02 20:14:56,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [50165478] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:56,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:56,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:14:56,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289713362] [2022-11-02 20:14:56,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:56,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:14:56,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:14:56,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:14:56,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:14:56,371 INFO L87 Difference]: Start difference. First operand 234 states and 267 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2022-11-02 20:14:57,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:57,547 INFO L93 Difference]: Finished difference Result 238 states and 271 transitions. [2022-11-02 20:14:57,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:14:57,549 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 [2022-11-02 20:14:57,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:57,551 INFO L225 Difference]: With dead ends: 238 [2022-11-02 20:14:57,551 INFO L226 Difference]: Without dead ends: 238 [2022-11-02 20:14:57,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:14:57,552 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 17 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:57,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 431 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 20:14:57,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-11-02 20:14:57,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 236. [2022-11-02 20:14:57,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 144 states have (on average 1.8402777777777777) internal successors, (265), 232 states have internal predecessors, (265), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:14:57,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 269 transitions. [2022-11-02 20:14:57,566 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 269 transitions. Word has length 6 [2022-11-02 20:14:57,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:57,567 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 269 transitions. [2022-11-02 20:14:57,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2022-11-02 20:14:57,568 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 269 transitions. [2022-11-02 20:14:57,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-02 20:14:57,568 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:57,569 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:57,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:14:57,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:14:57,782 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-11-02 20:14:57,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:57,783 INFO L85 PathProgramCache]: Analyzing trace with hash -2080656212, now seen corresponding path program 1 times [2022-11-02 20:14:57,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:14:57,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [5496626] [2022-11-02 20:14:57,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:57,785 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:14:57,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:14:57,787 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:14:57,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 20:14:58,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:58,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:14:58,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:14:58,061 INFO L390 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 [2022-11-02 20:14:58,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:58,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:15:00,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:15:00,502 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:15:00,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [5496626] [2022-11-02 20:15:00,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [5496626] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:15:00,503 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:15:00,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-11-02 20:15:00,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865508555] [2022-11-02 20:15:00,503 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:15:00,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:15:00,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:15:00,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:15:00,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:15:00,505 INFO L87 Difference]: Start difference. First operand 236 states and 269 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:06,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:06,794 INFO L93 Difference]: Finished difference Result 242 states and 275 transitions. [2022-11-02 20:15:06,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:15:06,797 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-02 20:15:06,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:06,799 INFO L225 Difference]: With dead ends: 242 [2022-11-02 20:15:06,799 INFO L226 Difference]: Without dead ends: 242 [2022-11-02 20:15:06,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:15:06,800 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 31 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:06,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 1116 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-02 20:15:06,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-11-02 20:15:06,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2022-11-02 20:15:06,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 151 states have (on average 1.794701986754967) internal successors, (271), 238 states have internal predecessors, (271), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:15:06,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 275 transitions. [2022-11-02 20:15:06,813 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 275 transitions. Word has length 10 [2022-11-02 20:15:06,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:06,814 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 275 transitions. [2022-11-02 20:15:06,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:06,814 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 275 transitions. [2022-11-02 20:15:06,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 20:15:06,815 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:06,815 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:06,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:15:07,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:15:07,039 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-11-02 20:15:07,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:07,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1026813049, now seen corresponding path program 1 times [2022-11-02 20:15:07,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:15:07,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1897748903] [2022-11-02 20:15:07,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:07,041 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:15:07,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:15:07,045 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:15:07,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 20:15:07,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:07,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:15:07,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:15:07,399 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:15:07,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:15:07,534 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:15:07,534 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:15:07,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1897748903] [2022-11-02 20:15:07,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1897748903] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:15:07,535 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:15:07,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-02 20:15:07,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491150426] [2022-11-02 20:15:07,535 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:15:07,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:15:07,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:15:07,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:15:07,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:15:07,537 INFO L87 Difference]: Start difference. First operand 242 states and 275 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 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) [2022-11-02 20:15:07,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:07,913 INFO L93 Difference]: Finished difference Result 262 states and 295 transitions. [2022-11-02 20:15:07,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:15:07,914 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 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 19 [2022-11-02 20:15:07,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:07,915 INFO L225 Difference]: With dead ends: 262 [2022-11-02 20:15:07,916 INFO L226 Difference]: Without dead ends: 262 [2022-11-02 20:15:07,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:15:07,917 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 24 mSDsluCounter, 1569 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1835 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:07,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 1835 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:15:07,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-11-02 20:15:07,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2022-11-02 20:15:07,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 171 states have (on average 1.7017543859649122) internal successors, (291), 258 states have internal predecessors, (291), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:15:07,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 295 transitions. [2022-11-02 20:15:07,938 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 295 transitions. Word has length 19 [2022-11-02 20:15:07,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:07,938 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 295 transitions. [2022-11-02 20:15:07,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 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) [2022-11-02 20:15:07,939 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 295 transitions. [2022-11-02 20:15:07,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-02 20:15:07,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:07,940 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:07,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:15:08,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:15:08,155 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-11-02 20:15:08,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:08,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1411098840, now seen corresponding path program 2 times [2022-11-02 20:15:08,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:15:08,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1663635352] [2022-11-02 20:15:08,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:15:08,157 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:15:08,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:15:08,158 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:15:08,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 20:15:08,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:15:08,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:15:08,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:15:08,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:15:08,466 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-02 20:15:08,467 INFO L390 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 14 treesize of output 20 [2022-11-02 20:15:08,802 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-11-02 20:15:08,803 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:15:08,803 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:15:08,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1663635352] [2022-11-02 20:15:08,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1663635352] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:08,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:08,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:15:08,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539450319] [2022-11-02 20:15:08,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:08,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:15:08,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:15:08,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:15:08,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:15:08,806 INFO L87 Difference]: Start difference. First operand 262 states and 295 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 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) [2022-11-02 20:15:09,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:09,408 INFO L93 Difference]: Finished difference Result 277 states and 311 transitions. [2022-11-02 20:15:09,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:15:09,409 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 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 39 [2022-11-02 20:15:09,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:09,411 INFO L225 Difference]: With dead ends: 277 [2022-11-02 20:15:09,411 INFO L226 Difference]: Without dead ends: 277 [2022-11-02 20:15:09,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:15:09,412 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 237 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:09,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 202 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:15:09,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2022-11-02 20:15:09,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 261. [2022-11-02 20:15:09,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 171 states have (on average 1.695906432748538) internal successors, (290), 257 states have internal predecessors, (290), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:15:09,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 294 transitions. [2022-11-02 20:15:09,425 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 294 transitions. Word has length 39 [2022-11-02 20:15:09,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:09,425 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 294 transitions. [2022-11-02 20:15:09,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 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) [2022-11-02 20:15:09,426 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 294 transitions. [2022-11-02 20:15:09,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-02 20:15:09,428 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:09,428 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:09,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:15:09,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:15:09,647 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-11-02 20:15:09,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:09,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1411098841, now seen corresponding path program 1 times [2022-11-02 20:15:09,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:15:09,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1502599896] [2022-11-02 20:15:09,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:09,649 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:15:09,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:15:09,651 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:15:09,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 20:15:09,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:10,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:15:10,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:15:10,243 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:15:10,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:15:10,681 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:15:10,681 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:15:10,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1502599896] [2022-11-02 20:15:10,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1502599896] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:15:10,682 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:15:10,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2022-11-02 20:15:10,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189990361] [2022-11-02 20:15:10,682 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:15:10,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 20:15:10,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:15:10,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 20:15:10,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:15:10,684 INFO L87 Difference]: Start difference. First operand 261 states and 294 transitions. Second operand has 20 states, 20 states have (on average 3.65) internal successors, (73), 20 states have internal predecessors, (73), 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) [2022-11-02 20:15:11,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:11,411 INFO L93 Difference]: Finished difference Result 269 states and 302 transitions. [2022-11-02 20:15:11,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:15:11,413 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.65) internal successors, (73), 20 states have internal predecessors, (73), 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 39 [2022-11-02 20:15:11,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:11,415 INFO L225 Difference]: With dead ends: 269 [2022-11-02 20:15:11,415 INFO L226 Difference]: Without dead ends: 269 [2022-11-02 20:15:11,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:15:11,416 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 30 mSDsluCounter, 3171 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3441 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:11,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3441 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:15:11,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-11-02 20:15:11,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2022-11-02 20:15:11,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 179 states have (on average 1.664804469273743) internal successors, (298), 265 states have internal predecessors, (298), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:15:11,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 302 transitions. [2022-11-02 20:15:11,425 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 302 transitions. Word has length 39 [2022-11-02 20:15:11,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:11,426 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 302 transitions. [2022-11-02 20:15:11,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.65) internal successors, (73), 20 states have internal predecessors, (73), 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) [2022-11-02 20:15:11,427 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 302 transitions. [2022-11-02 20:15:11,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-02 20:15:11,428 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:11,428 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:11,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:15:11,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:15:11,650 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-11-02 20:15:11,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:11,651 INFO L85 PathProgramCache]: Analyzing trace with hash 233252627, now seen corresponding path program 2 times [2022-11-02 20:15:11,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:15:11,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [846816665] [2022-11-02 20:15:11,652 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:15:11,652 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:15:11,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:15:11,653 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:15:11,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 20:15:11,939 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:15:11,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:15:11,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:15:11,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:15:12,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:15:12,007 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-02 20:15:12,587 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-02 20:15:12,587 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:15:12,587 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:15:12,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [846816665] [2022-11-02 20:15:12,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [846816665] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:12,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:12,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:15:12,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104971888] [2022-11-02 20:15:12,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:12,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:15:12,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:15:12,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:15:12,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:15:12,589 INFO L87 Difference]: Start difference. First operand 269 states and 302 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2022-11-02 20:15:13,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:13,671 INFO L93 Difference]: Finished difference Result 284 states and 318 transitions. [2022-11-02 20:15:13,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:15:13,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 47 [2022-11-02 20:15:13,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:13,674 INFO L225 Difference]: With dead ends: 284 [2022-11-02 20:15:13,675 INFO L226 Difference]: Without dead ends: 284 [2022-11-02 20:15:13,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:15:13,676 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 275 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:13,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 158 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 20:15:13,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-11-02 20:15:13,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 268. [2022-11-02 20:15:13,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 179 states have (on average 1.6592178770949721) internal successors, (297), 264 states have internal predecessors, (297), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:15:13,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 301 transitions. [2022-11-02 20:15:13,685 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 301 transitions. Word has length 47 [2022-11-02 20:15:13,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:13,685 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 301 transitions. [2022-11-02 20:15:13,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2022-11-02 20:15:13,686 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 301 transitions. [2022-11-02 20:15:13,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-02 20:15:13,687 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:13,687 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:13,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:15:13,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:15:13,903 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-11-02 20:15:13,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:13,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1065773764, now seen corresponding path program 1 times [2022-11-02 20:15:13,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:15:13,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [651457675] [2022-11-02 20:15:13,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:13,904 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:15:13,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:15:13,906 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:15:13,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 20:15:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:14,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:15:14,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:15:14,611 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-02 20:15:14,611 INFO L390 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 15 [2022-11-02 20:15:14,661 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-02 20:15:14,662 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:15:14,662 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:15:14,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [651457675] [2022-11-02 20:15:14,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [651457675] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:14,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:14,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:15:14,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239007802] [2022-11-02 20:15:14,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:14,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:15:14,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:15:14,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:15:14,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:15:14,664 INFO L87 Difference]: Start difference. First operand 268 states and 301 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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) [2022-11-02 20:15:15,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:15,356 INFO L93 Difference]: Finished difference Result 279 states and 313 transitions. [2022-11-02 20:15:15,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:15:15,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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 55 [2022-11-02 20:15:15,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:15,359 INFO L225 Difference]: With dead ends: 279 [2022-11-02 20:15:15,359 INFO L226 Difference]: Without dead ends: 279 [2022-11-02 20:15:15,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:15:15,360 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 222 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:15,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 211 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:15:15,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2022-11-02 20:15:15,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 263. [2022-11-02 20:15:15,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 179 states have (on average 1.6312849162011174) internal successors, (292), 259 states have internal predecessors, (292), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:15:15,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 296 transitions. [2022-11-02 20:15:15,370 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 296 transitions. Word has length 55 [2022-11-02 20:15:15,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:15,372 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 296 transitions. [2022-11-02 20:15:15,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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) [2022-11-02 20:15:15,372 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 296 transitions. [2022-11-02 20:15:15,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-02 20:15:15,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:15,374 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:15,407 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-11-02 20:15:15,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:15:15,590 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-11-02 20:15:15,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:15,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1065773765, now seen corresponding path program 1 times [2022-11-02 20:15:15,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:15:15,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [100296733] [2022-11-02 20:15:15,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:15,592 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:15:15,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:15:15,600 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:15:15,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 20:15:16,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:16,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:15:16,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:15:16,333 INFO L356 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2022-11-02 20:15:16,333 INFO L390 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 [2022-11-02 20:15:16,498 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-02 20:15:16,498 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:15:16,499 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:15:16,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [100296733] [2022-11-02 20:15:16,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [100296733] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:16,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:16,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:15:16,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838609761] [2022-11-02 20:15:16,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:16,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:15:16,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:15:16,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:15:16,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:15:16,500 INFO L87 Difference]: Start difference. First operand 263 states and 296 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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) [2022-11-02 20:15:19,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:19,094 INFO L93 Difference]: Finished difference Result 443 states and 507 transitions. [2022-11-02 20:15:19,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:15:19,096 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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 55 [2022-11-02 20:15:19,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:19,098 INFO L225 Difference]: With dead ends: 443 [2022-11-02 20:15:19,099 INFO L226 Difference]: Without dead ends: 443 [2022-11-02 20:15:19,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:15:19,101 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 642 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:19,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 778 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-02 20:15:19,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-11-02 20:15:19,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 367. [2022-11-02 20:15:19,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 283 states have (on average 1.7279151943462898) internal successors, (489), 362 states have internal predecessors, (489), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 20:15:19,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 495 transitions. [2022-11-02 20:15:19,124 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 495 transitions. Word has length 55 [2022-11-02 20:15:19,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:19,126 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 495 transitions. [2022-11-02 20:15:19,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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) [2022-11-02 20:15:19,126 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 495 transitions. [2022-11-02 20:15:19,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-02 20:15:19,129 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:19,129 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:19,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:15:19,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:15:19,342 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-11-02 20:15:19,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:19,343 INFO L85 PathProgramCache]: Analyzing trace with hash 2067963466, now seen corresponding path program 1 times [2022-11-02 20:15:19,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:15:19,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [682393190] [2022-11-02 20:15:19,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:19,345 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:15:19,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:15:19,347 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:15:19,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 20:15:19,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:20,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:15:20,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:15:20,115 INFO L356 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2022-11-02 20:15:20,115 INFO L390 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 [2022-11-02 20:15:20,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:15:20,745 INFO L356 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-02 20:15:20,746 INFO L390 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 27 treesize of output 36 [2022-11-02 20:15:20,792 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-02 20:15:20,793 INFO L390 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 13 treesize of output 13 [2022-11-02 20:15:21,112 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-02 20:15:21,112 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:15:21,113 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:15:21,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [682393190] [2022-11-02 20:15:21,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [682393190] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:21,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:21,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:15:21,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237157319] [2022-11-02 20:15:21,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:21,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:15:21,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:15:21,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:15:21,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:15:21,115 INFO L87 Difference]: Start difference. First operand 367 states and 495 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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) [2022-11-02 20:15:21,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:21,328 INFO L93 Difference]: Finished difference Result 368 states and 496 transitions. [2022-11-02 20:15:21,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:15:21,329 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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 [2022-11-02 20:15:21,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:21,331 INFO L225 Difference]: With dead ends: 368 [2022-11-02 20:15:21,331 INFO L226 Difference]: Without dead ends: 368 [2022-11-02 20:15:21,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:15:21,333 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 4 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1444 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 305 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:21,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1444 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 305 Unchecked, 0.1s Time] [2022-11-02 20:15:21,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-11-02 20:15:21,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 368. [2022-11-02 20:15:21,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 284 states have (on average 1.7253521126760563) internal successors, (490), 363 states have internal predecessors, (490), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 20:15:21,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 496 transitions. [2022-11-02 20:15:21,345 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 496 transitions. Word has length 58 [2022-11-02 20:15:21,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:21,346 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 496 transitions. [2022-11-02 20:15:21,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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) [2022-11-02 20:15:21,346 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 496 transitions. [2022-11-02 20:15:21,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-02 20:15:21,347 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:21,348 INFO L195 NwaCegarLoop]: 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] [2022-11-02 20:15:21,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:15:21,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:15:21,567 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-11-02 20:15:21,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:21,568 INFO L85 PathProgramCache]: Analyzing trace with hash -317642580, now seen corresponding path program 1 times [2022-11-02 20:15:21,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:15:21,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [995075539] [2022-11-02 20:15:21,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:21,569 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:15:21,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:15:21,570 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:15:21,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 20:15:21,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:22,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:15:22,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:15:22,117 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-02 20:15:22,117 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:15:22,117 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:15:22,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [995075539] [2022-11-02 20:15:22,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [995075539] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:22,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:22,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:15:22,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777038226] [2022-11-02 20:15:22,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:22,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:15:22,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:15:22,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:15:22,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:15:22,120 INFO L87 Difference]: Start difference. First operand 368 states and 496 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 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) [2022-11-02 20:15:22,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:22,707 INFO L93 Difference]: Finished difference Result 286 states and 320 transitions. [2022-11-02 20:15:22,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:15:22,708 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 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 [2022-11-02 20:15:22,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:22,710 INFO L225 Difference]: With dead ends: 286 [2022-11-02 20:15:22,710 INFO L226 Difference]: Without dead ends: 286 [2022-11-02 20:15:22,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:15:22,711 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 263 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:22,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 952 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:15:22,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-11-02 20:15:22,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 264. [2022-11-02 20:15:22,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 181 states have (on average 1.6187845303867403) internal successors, (293), 260 states have internal predecessors, (293), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:15:22,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 297 transitions. [2022-11-02 20:15:22,725 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 297 transitions. Word has length 59 [2022-11-02 20:15:22,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:22,725 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 297 transitions. [2022-11-02 20:15:22,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 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) [2022-11-02 20:15:22,726 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 297 transitions. [2022-11-02 20:15:22,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-02 20:15:22,727 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:22,727 INFO L195 NwaCegarLoop]: 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] [2022-11-02 20:15:22,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:15:22,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:15:22,942 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-11-02 20:15:22,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:22,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1256967413, now seen corresponding path program 1 times [2022-11-02 20:15:22,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:15:22,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [337540036] [2022-11-02 20:15:22,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:22,943 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:15:22,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:15:22,944 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:15:22,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 20:15:23,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:23,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:15:23,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:15:23,539 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-02 20:15:23,539 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:15:23,540 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:15:23,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [337540036] [2022-11-02 20:15:23,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [337540036] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:23,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:23,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:15:23,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447382511] [2022-11-02 20:15:23,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:23,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:15:23,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:15:23,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:15:23,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:15:23,542 INFO L87 Difference]: Start difference. First operand 264 states and 297 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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) [2022-11-02 20:15:24,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:24,896 INFO L93 Difference]: Finished difference Result 282 states and 316 transitions. [2022-11-02 20:15:24,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:15:24,898 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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 60 [2022-11-02 20:15:24,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:24,899 INFO L225 Difference]: With dead ends: 282 [2022-11-02 20:15:24,899 INFO L226 Difference]: Without dead ends: 282 [2022-11-02 20:15:24,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:15:24,901 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 277 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:24,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 631 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-02 20:15:24,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-11-02 20:15:24,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 275. [2022-11-02 20:15:24,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 193 states have (on average 1.61139896373057) internal successors, (311), 271 states have internal predecessors, (311), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:15:24,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 315 transitions. [2022-11-02 20:15:24,910 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 315 transitions. Word has length 60 [2022-11-02 20:15:24,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:24,910 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 315 transitions. [2022-11-02 20:15:24,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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) [2022-11-02 20:15:24,911 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 315 transitions. [2022-11-02 20:15:24,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-02 20:15:24,912 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:24,912 INFO L195 NwaCegarLoop]: 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] [2022-11-02 20:15:24,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 20:15:25,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:15:25,130 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-11-02 20:15:25,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:25,131 INFO L85 PathProgramCache]: Analyzing trace with hash -311284142, now seen corresponding path program 1 times [2022-11-02 20:15:25,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:15:25,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1466619546] [2022-11-02 20:15:25,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:25,132 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:15:25,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:15:25,133 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:15:25,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 20:15:25,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:25,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:15:25,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:15:25,866 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-02 20:15:25,867 INFO L390 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 19 [2022-11-02 20:15:25,933 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-02 20:15:25,934 INFO L390 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 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-02 20:15:25,973 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-02 20:15:25,973 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:15:25,973 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:15:25,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1466619546] [2022-11-02 20:15:25,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1466619546] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:25,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:25,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:15:25,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047366912] [2022-11-02 20:15:25,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:25,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:15:25,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:15:25,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:15:25,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:15:25,976 INFO L87 Difference]: Start difference. First operand 275 states and 315 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 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) [2022-11-02 20:15:26,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:26,771 INFO L93 Difference]: Finished difference Result 282 states and 322 transitions. [2022-11-02 20:15:26,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:15:26,772 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 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 61 [2022-11-02 20:15:26,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:26,774 INFO L225 Difference]: With dead ends: 282 [2022-11-02 20:15:26,774 INFO L226 Difference]: Without dead ends: 282 [2022-11-02 20:15:26,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:15:26,775 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 214 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:26,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 373 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:15:26,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-11-02 20:15:26,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 279. [2022-11-02 20:15:26,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 198 states have (on average 1.606060606060606) internal successors, (318), 275 states have internal predecessors, (318), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:15:26,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 322 transitions. [2022-11-02 20:15:26,788 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 322 transitions. Word has length 61 [2022-11-02 20:15:26,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:26,789 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 322 transitions. [2022-11-02 20:15:26,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 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) [2022-11-02 20:15:26,789 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 322 transitions. [2022-11-02 20:15:26,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-02 20:15:26,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:26,790 INFO L195 NwaCegarLoop]: 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] [2022-11-02 20:15:26,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-11-02 20:15:27,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:15:27,004 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-11-02 20:15:27,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:27,004 INFO L85 PathProgramCache]: Analyzing trace with hash -311284141, now seen corresponding path program 1 times [2022-11-02 20:15:27,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:15:27,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2115273952] [2022-11-02 20:15:27,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:27,006 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:15:27,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:15:27,007 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:15:27,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 20:15:27,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:27,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-02 20:15:27,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:15:27,969 INFO L356 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-02 20:15:27,969 INFO L390 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 14 treesize of output 20 [2022-11-02 20:15:28,026 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-02 20:15:28,027 INFO L390 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 19 [2022-11-02 20:15:28,407 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-02 20:15:28,407 INFO L390 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 13 treesize of output 13 [2022-11-02 20:15:28,423 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-11-02 20:15:28,786 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-02 20:15:28,786 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:15:28,786 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:15:28,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2115273952] [2022-11-02 20:15:28,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2115273952] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:28,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:28,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:15:28,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628272881] [2022-11-02 20:15:28,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:28,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:15:28,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:15:28,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:15:28,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:15:28,789 INFO L87 Difference]: Start difference. First operand 279 states and 322 transitions. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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) [2022-11-02 20:15:28,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:28,992 INFO L93 Difference]: Finished difference Result 279 states and 321 transitions. [2022-11-02 20:15:28,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:15:28,993 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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 61 [2022-11-02 20:15:28,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:28,995 INFO L225 Difference]: With dead ends: 279 [2022-11-02 20:15:28,995 INFO L226 Difference]: Without dead ends: 279 [2022-11-02 20:15:28,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:15:28,996 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 4 mSDsluCounter, 1179 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1426 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 303 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:28,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1426 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 303 Unchecked, 0.1s Time] [2022-11-02 20:15:28,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2022-11-02 20:15:29,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2022-11-02 20:15:29,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 198 states have (on average 1.601010101010101) internal successors, (317), 275 states have internal predecessors, (317), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:15:29,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 321 transitions. [2022-11-02 20:15:29,005 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 321 transitions. Word has length 61 [2022-11-02 20:15:29,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:29,005 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 321 transitions. [2022-11-02 20:15:29,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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) [2022-11-02 20:15:29,006 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 321 transitions. [2022-11-02 20:15:29,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-02 20:15:29,006 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:29,007 INFO L195 NwaCegarLoop]: 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] [2022-11-02 20:15:29,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 20:15:29,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:15:29,232 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-11-02 20:15:29,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:29,233 INFO L85 PathProgramCache]: Analyzing trace with hash -631451440, now seen corresponding path program 1 times [2022-11-02 20:15:29,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:15:29,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [886056448] [2022-11-02 20:15:29,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:29,234 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:15:29,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:15:29,236 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:15:29,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 20:15:29,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:30,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:15:30,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:15:30,080 INFO L390 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 7 [2022-11-02 20:15:30,122 INFO L390 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 16 treesize of output 12 [2022-11-02 20:15:30,339 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-02 20:15:30,340 INFO L390 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 40 treesize of output 30 [2022-11-02 20:15:30,505 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-02 20:15:30,505 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 14 [2022-11-02 20:15:30,535 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-02 20:15:30,535 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:15:30,535 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:15:30,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [886056448] [2022-11-02 20:15:30,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [886056448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:30,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:30,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:15:30,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501923296] [2022-11-02 20:15:30,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:30,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:15:30,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:15:30,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:15:30,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:15:30,538 INFO L87 Difference]: Start difference. First operand 279 states and 321 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-11-02 20:15:32,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:15:34,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:34,436 INFO L93 Difference]: Finished difference Result 277 states and 317 transitions. [2022-11-02 20:15:34,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:15:34,437 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 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 64 [2022-11-02 20:15:34,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:34,439 INFO L225 Difference]: With dead ends: 277 [2022-11-02 20:15:34,439 INFO L226 Difference]: Without dead ends: 277 [2022-11-02 20:15:34,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:15:34,441 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 232 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 1042 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 90 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:34,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 1042 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 382 Invalid, 1 Unknown, 90 Unchecked, 3.7s Time] [2022-11-02 20:15:34,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2022-11-02 20:15:34,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2022-11-02 20:15:34,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 198 states have (on average 1.5808080808080809) internal successors, (313), 273 states have internal predecessors, (313), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:15:34,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 317 transitions. [2022-11-02 20:15:34,450 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 317 transitions. Word has length 64 [2022-11-02 20:15:34,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:34,451 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 317 transitions. [2022-11-02 20:15:34,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 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) [2022-11-02 20:15:34,451 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 317 transitions. [2022-11-02 20:15:34,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-02 20:15:34,452 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:34,452 INFO L195 NwaCegarLoop]: 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] [2022-11-02 20:15:34,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 20:15:34,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:15:34,679 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-11-02 20:15:34,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:34,679 INFO L85 PathProgramCache]: Analyzing trace with hash -631451439, now seen corresponding path program 1 times [2022-11-02 20:15:34,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:15:34,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2072485261] [2022-11-02 20:15:34,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:34,680 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:15:34,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:15:34,681 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:15:34,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 20:15:35,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:35,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:15:35,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:15:35,617 INFO L390 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 10 treesize of output 8 [2022-11-02 20:15:35,651 INFO L390 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 [2022-11-02 20:15:35,705 INFO L390 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 [2022-11-02 20:15:35,736 INFO L390 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 [2022-11-02 20:15:35,886 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2022-11-02 20:15:35,911 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-11-02 20:15:36,013 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2022-11-02 20:15:36,020 INFO L390 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 9 [2022-11-02 20:15:36,058 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-02 20:15:36,058 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:15:36,058 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:15:36,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2072485261] [2022-11-02 20:15:36,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2072485261] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:36,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:36,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:15:36,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392279427] [2022-11-02 20:15:36,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:36,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:15:36,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:15:36,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:15:36,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:15:36,061 INFO L87 Difference]: Start difference. First operand 277 states and 317 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 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) [2022-11-02 20:15:38,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:38,067 INFO L93 Difference]: Finished difference Result 276 states and 315 transitions. [2022-11-02 20:15:38,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:15:38,070 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 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 64 [2022-11-02 20:15:38,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:38,071 INFO L225 Difference]: With dead ends: 276 [2022-11-02 20:15:38,071 INFO L226 Difference]: Without dead ends: 276 [2022-11-02 20:15:38,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:15:38,072 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 240 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:38,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 734 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-02 20:15:38,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-11-02 20:15:38,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2022-11-02 20:15:38,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 198 states have (on average 1.5707070707070707) internal successors, (311), 272 states have internal predecessors, (311), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:15:38,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 315 transitions. [2022-11-02 20:15:38,081 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 315 transitions. Word has length 64 [2022-11-02 20:15:38,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:38,081 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 315 transitions. [2022-11-02 20:15:38,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 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) [2022-11-02 20:15:38,082 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 315 transitions. [2022-11-02 20:15:38,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-02 20:15:38,083 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:38,083 INFO L195 NwaCegarLoop]: 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, 1, 1] [2022-11-02 20:15:38,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 20:15:38,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:15:38,307 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-11-02 20:15:38,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:38,307 INFO L85 PathProgramCache]: Analyzing trace with hash -889593477, now seen corresponding path program 1 times [2022-11-02 20:15:38,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:15:38,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1581599282] [2022-11-02 20:15:38,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:38,309 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:15:38,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:15:38,311 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:15:38,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 20:15:39,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:39,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:15:39,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:15:39,142 INFO L390 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 10 treesize of output 8 [2022-11-02 20:15:39,253 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-02 20:15:39,254 INFO L390 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 19 treesize of output 27 [2022-11-02 20:15:39,313 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2022-11-02 20:15:39,475 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 36 [2022-11-02 20:15:39,701 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 20:15:39,701 INFO L390 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 45 treesize of output 46 [2022-11-02 20:15:39,779 INFO L390 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 42 treesize of output 15 [2022-11-02 20:15:39,894 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-02 20:15:39,894 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:15:39,894 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:15:39,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1581599282] [2022-11-02 20:15:39,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1581599282] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:39,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:39,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:15:39,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831283387] [2022-11-02 20:15:39,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:39,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:15:39,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:15:39,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:15:39,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:15:39,897 INFO L87 Difference]: Start difference. First operand 276 states and 315 transitions. Second operand has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 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) [2022-11-02 20:15:42,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:42,321 INFO L93 Difference]: Finished difference Result 297 states and 337 transitions. [2022-11-02 20:15:42,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:15:42,322 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 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 68 [2022-11-02 20:15:42,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:42,324 INFO L225 Difference]: With dead ends: 297 [2022-11-02 20:15:42,324 INFO L226 Difference]: Without dead ends: 297 [2022-11-02 20:15:42,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:15:42,325 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 472 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 98 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:42,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 795 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 374 Invalid, 0 Unknown, 98 Unchecked, 2.1s Time] [2022-11-02 20:15:42,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-11-02 20:15:42,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 285. [2022-11-02 20:15:42,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 207 states have (on average 1.5748792270531402) internal successors, (326), 281 states have internal predecessors, (326), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:15:42,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 330 transitions. [2022-11-02 20:15:42,333 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 330 transitions. Word has length 68 [2022-11-02 20:15:42,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:42,334 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 330 transitions. [2022-11-02 20:15:42,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 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) [2022-11-02 20:15:42,335 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 330 transitions. [2022-11-02 20:15:42,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-02 20:15:42,335 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:42,336 INFO L195 NwaCegarLoop]: 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, 1, 1] [2022-11-02 20:15:42,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-02 20:15:42,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:15:42,550 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-11-02 20:15:42,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:42,551 INFO L85 PathProgramCache]: Analyzing trace with hash -889593476, now seen corresponding path program 1 times [2022-11-02 20:15:42,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:15:42,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [441417191] [2022-11-02 20:15:42,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:42,552 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:15:42,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:15:42,553 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:15:42,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 20:15:43,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:43,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:15:43,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:15:43,439 INFO L390 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 10 treesize of output 8 [2022-11-02 20:15:43,489 INFO L390 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 [2022-11-02 20:15:43,517 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-02 20:15:43,517 INFO L390 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 13 treesize of output 13 [2022-11-02 20:15:43,587 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2022-11-02 20:15:43,617 INFO L390 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 [2022-11-02 20:15:43,785 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 34 [2022-11-02 20:15:43,791 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-11-02 20:15:44,049 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 20:15:44,050 INFO L390 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 58 treesize of output 57 [2022-11-02 20:15:44,071 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-02 20:15:44,263 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 13 [2022-11-02 20:15:44,272 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2022-11-02 20:15:44,330 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-02 20:15:44,331 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:15:44,331 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:15:44,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [441417191] [2022-11-02 20:15:44,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [441417191] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:44,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:44,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:15:44,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504616598] [2022-11-02 20:15:44,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:44,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:15:44,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:15:44,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:15:44,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:15:44,333 INFO L87 Difference]: Start difference. First operand 285 states and 330 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 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) [2022-11-02 20:15:47,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:47,507 INFO L93 Difference]: Finished difference Result 297 states and 334 transitions. [2022-11-02 20:15:47,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:15:47,508 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 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 68 [2022-11-02 20:15:47,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:47,510 INFO L225 Difference]: With dead ends: 297 [2022-11-02 20:15:47,510 INFO L226 Difference]: Without dead ends: 297 [2022-11-02 20:15:47,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:15:47,512 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 272 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:47,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 573 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-02 20:15:47,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-11-02 20:15:47,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 285. [2022-11-02 20:15:47,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 207 states have (on average 1.5555555555555556) internal successors, (322), 281 states have internal predecessors, (322), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:15:47,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 326 transitions. [2022-11-02 20:15:47,521 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 326 transitions. Word has length 68 [2022-11-02 20:15:47,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:47,521 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 326 transitions. [2022-11-02 20:15:47,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 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) [2022-11-02 20:15:47,522 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 326 transitions. [2022-11-02 20:15:47,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-02 20:15:47,528 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:47,528 INFO L195 NwaCegarLoop]: 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, 1, 1] [2022-11-02 20:15:47,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-02 20:15:47,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:15:47,742 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-11-02 20:15:47,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:47,743 INFO L85 PathProgramCache]: Analyzing trace with hash -269261804, now seen corresponding path program 1 times [2022-11-02 20:15:47,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:15:47,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1099300188] [2022-11-02 20:15:47,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:47,744 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:15:47,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:15:47,745 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:15:47,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-02 20:15:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:48,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:15:48,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:15:48,842 INFO L390 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 10 treesize of output 8 [2022-11-02 20:15:48,919 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-02 20:15:48,920 INFO L390 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 19 treesize of output 27 [2022-11-02 20:15:48,972 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2022-11-02 20:15:49,128 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 36 [2022-11-02 20:15:49,379 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 20:15:49,380 INFO L390 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 45 treesize of output 46 [2022-11-02 20:15:49,612 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 20:15:49,613 INFO L390 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 45 treesize of output 46 [2022-11-02 20:15:49,709 INFO L390 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 42 treesize of output 15 [2022-11-02 20:15:49,830 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-11-02 20:15:49,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:15:50,210 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1548 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse0 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse0) v_ArrVal_1548) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse0))) (_ bv1 1)))) is different from false [2022-11-02 20:15:50,264 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1547 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1548 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem126#1.base| v_ArrVal_1547))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1548)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2022-11-02 20:15:50,297 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1547 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1548 (Array (_ BitVec 64) (_ BitVec 64)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1547))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1548)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-02 20:15:50,357 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1547 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1546 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1548 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| v_ArrVal_1546))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1547)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1548)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1)))))) is different from false [2022-11-02 20:15:50,413 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:15:50,414 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 116 treesize of output 78 [2022-11-02 20:15:50,421 INFO L390 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 1801 treesize of output 1387 [2022-11-02 20:15:50,544 INFO L390 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 1183 treesize of output 924 [2022-11-02 20:15:50,560 INFO L390 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 924 treesize of output 798 [2022-11-02 20:15:50,582 INFO L390 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 798 treesize of output 770 [2022-11-02 20:15:55,880 INFO L356 Elim1Store]: treesize reduction 24, result has 22.6 percent of original size [2022-11-02 20:15:55,880 INFO L390 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 30 treesize of output 30 [2022-11-02 20:15:55,906 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 190 trivial. 2 not checked. [2022-11-02 20:15:55,907 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:15:55,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1099300188] [2022-11-02 20:15:55,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1099300188] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:15:55,907 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:15:55,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 18 [2022-11-02 20:15:55,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911431177] [2022-11-02 20:15:55,908 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:15:55,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:15:55,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:15:55,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:15:55,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=164, Unknown=7, NotChecked=116, Total=342 [2022-11-02 20:15:55,910 INFO L87 Difference]: Start difference. First operand 285 states and 326 transitions. Second operand has 19 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 19 states have internal predecessors, (53), 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) [2022-11-02 20:15:58,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:58,801 INFO L93 Difference]: Finished difference Result 287 states and 326 transitions. [2022-11-02 20:15:58,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:15:58,802 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 19 states have internal predecessors, (53), 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 73 [2022-11-02 20:15:58,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:58,804 INFO L225 Difference]: With dead ends: 287 [2022-11-02 20:15:58,804 INFO L226 Difference]: Without dead ends: 287 [2022-11-02 20:15:58,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 127 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=65, Invalid=184, Unknown=7, NotChecked=124, Total=380 [2022-11-02 20:15:58,805 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 19 mSDsluCounter, 1749 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 1991 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 614 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:58,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 1991 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 296 Invalid, 0 Unknown, 614 Unchecked, 2.1s Time] [2022-11-02 20:15:58,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-11-02 20:15:58,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 285. [2022-11-02 20:15:58,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 207 states have (on average 1.5507246376811594) internal successors, (321), 281 states have internal predecessors, (321), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:15:58,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 325 transitions. [2022-11-02 20:15:58,814 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 325 transitions. Word has length 73 [2022-11-02 20:15:58,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:58,814 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 325 transitions. [2022-11-02 20:15:58,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 19 states have internal predecessors, (53), 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) [2022-11-02 20:15:58,815 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 325 transitions. [2022-11-02 20:15:58,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-02 20:15:58,815 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:58,816 INFO L195 NwaCegarLoop]: 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, 1, 1] [2022-11-02 20:15:58,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-02 20:15:59,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:15:59,042 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-11-02 20:15:59,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:59,043 INFO L85 PathProgramCache]: Analyzing trace with hash -269261803, now seen corresponding path program 1 times [2022-11-02 20:15:59,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:15:59,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1330432798] [2022-11-02 20:15:59,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:59,044 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:15:59,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:15:59,046 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:15:59,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c768eca7-dc8e-49da-85fa-c000ce6c3b02/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-02 20:16:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:00,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-02 20:16:00,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:16:00,164 INFO L390 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 10 treesize of output 8 [2022-11-02 20:16:00,225 INFO L390 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 [2022-11-02 20:16:00,251 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-02 20:16:00,251 INFO L390 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 13 treesize of output 13 [2022-11-02 20:16:00,314 INFO L390 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 [2022-11-02 20:16:00,340 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2022-11-02 20:16:00,535 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 34 [2022-11-02 20:16:00,546 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-11-02 20:16:00,832 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 20:16:00,832 INFO L390 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 58 treesize of output 57 [2022-11-02 20:16:00,855 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-02 20:16:01,238 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 20:16:01,239 INFO L390 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 58 treesize of output 57 [2022-11-02 20:16:01,261 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-02 20:16:01,508 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 13 [2022-11-02 20:16:01,517 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2022-11-02 20:16:01,577 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-11-02 20:16:01,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:16:03,682 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ sign_extend 32) (bvadd |c_ULTIMATE.start_main_~j~0#1| (_ bv1 32)))) (.cse0 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (and (forall ((v_ArrVal_1681 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1680 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (_ bv1 64) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem128#1.base| v_ArrVal_1680) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse0) .cse1) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem128#1.base| v_ArrVal_1681) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse0)))) (forall ((v_ArrVal_1680 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem128#1.base| v_ArrVal_1680) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse0))) (bvule (bvadd .cse2 .cse1) (bvadd (_ bv1 64) .cse2 .cse1)))))) is different from false [2022-11-02 20:16:03,872 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (let ((.cse2 ((_ sign_extend 32) (bvadd |c_ULTIMATE.start_main_~j~0#1| (_ bv1 32)))) (.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (and (forall ((v_ArrVal_1681 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1680 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (_ bv1 64) (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1680) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) .cse2) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1681) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1)))) (forall ((v_ArrVal_1680 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse3 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1680) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (bvule (bvadd .cse3 .cse2) (bvadd (_ bv1 64) .cse3 .cse2))))))) is different from false [2022-11-02 20:16:04,093 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (let ((.cse0 ((_ sign_extend 32) (_ bv1 32))) (.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (and (forall ((v_ArrVal_1681 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1680 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd .cse0 (_ bv1 64) (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_1680) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_1681) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2)))) (forall ((v_ArrVal_1680 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse3 (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_1680) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (bvule (bvadd .cse0 .cse3) (bvadd .cse0 (_ bv1 64) .cse3))))))) is different from false [2022-11-02 20:16:04,221 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ sign_extend 32) (_ bv1 32))) (.cse1 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (and (forall ((v_ArrVal_1679 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1678 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1681 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1680 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem126#1.base| v_ArrVal_1678))) (let ((.cse0 (select (select .cse3 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem126#1.base| v_ArrVal_1679) .cse0 v_ArrVal_1680) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) .cse2 (_ bv1 64)) (select |c_#length| (select (select (store .cse3 .cse0 v_ArrVal_1681) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1)))))) (forall ((v_ArrVal_1679 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1678 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1680 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem126#1.base| v_ArrVal_1679) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem126#1.base| v_ArrVal_1678) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1680) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (bvule (bvadd .cse4 .cse2) (bvadd .cse4 .cse2 (_ bv1 64))))))) is different from false [2022-11-02 20:16:05,230 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (let ((.cse3 ((_ sign_extend 32) (_ bv1 32))) (.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (and (forall ((v_ArrVal_1679 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1678 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1681 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1680 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1678))) (let ((.cse1 (select (select .cse4 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1679) .cse1 v_ArrVal_1680) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2) .cse3 (_ bv1 64)) (select |c_#length| (select (select (store .cse4 .cse1 v_ArrVal_1681) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2)))))) (forall ((v_ArrVal_1679 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1678 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1680 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse5 (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1679) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1678) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2) v_ArrVal_1680) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (bvule (bvadd .cse5 .cse3) (bvadd .cse5 .cse3 (_ bv1 64)))))))) is different from false [2022-11-02 20:16:05,733 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ sign_extend 32) (_ bv1 32))) (.cse4 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (and (forall ((v_ArrVal_1679 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1678 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1677 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1676 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1680 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse1 (select (select (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| v_ArrVal_1676))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse4))) (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~mem_track~0#1.base| v_ArrVal_1677) .cse2 v_ArrVal_1679) (select (select (store .cse3 .cse2 v_ArrVal_1678) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse4) v_ArrVal_1680))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse4))) (bvule (bvadd .cse0 .cse1) (bvadd .cse0 .cse1 (_ bv1 64))))) (forall ((v_ArrVal_1679 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1678 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1677 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1676 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1681 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1680 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse8 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| v_ArrVal_1676))) (let ((.cse5 (select (select .cse8 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse4))) (let ((.cse7 (store .cse8 .cse5 v_ArrVal_1678))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse4))) (bvule (bvadd .cse0 (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~mem_track~0#1.base| v_ArrVal_1677) .cse5 v_ArrVal_1679) .cse6 v_ArrVal_1680) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse4) (_ bv1 64)) (select |c_#length| (select (select (store .cse7 .cse6 v_ArrVal_1681) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse4)))))))))) is different from false [2022-11-02 20:16:05,930 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:16:05,930 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 227 treesize of output 228 [2022-11-02 20:16:05,974 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:16:05,975 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 214 treesize of output 137 [2022-11-02 20:16:06,018 INFO L390 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 5607 treesize of output 4554 [2022-11-02 20:16:06,116 INFO L390 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 92771 treesize of output 89882 [2022-11-02 20:16:07,148 INFO L390 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 89878 treesize of output 81366 [2022-11-02 20:16:07,621 INFO L390 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 81366 treesize of output 79126 [2022-11-02 20:16:08,090 INFO L390 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 79126 treesize of output 75094 [2022-11-02 20:16:08,421 INFO L390 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 75094 treesize of output 64426 [2022-11-02 20:16:08,717 INFO L390 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 64426 treesize of output 55914 [2022-11-02 20:16:08,983 INFO L390 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 55914 treesize of output 46842