./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/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_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/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 32bit --witnessprinter.graph.data.programhash 470d7065e9fd450e98d72326ef313763cf0710ea45f0a443b018e8a49bdf7927 --- 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 20:10:52,349 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:10:52,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:10:52,400 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:10:52,401 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:10:52,405 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:10:52,407 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:10:52,411 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:10:52,416 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:10:52,424 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:10:52,425 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:10:52,426 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:10:52,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:10:52,429 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:10:52,431 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:10:52,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:10:52,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:10:52,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:10:52,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:10:52,446 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:10:52,449 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:10:52,450 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:10:52,451 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:10:52,452 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:10:52,455 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:10:52,456 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:10:52,456 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:10:52,457 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:10:52,457 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:10:52,458 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:10:52,459 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:10:52,459 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:10:52,460 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:10:52,461 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:10:52,466 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:10:52,467 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:10:52,468 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:10:52,468 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:10:52,469 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:10:52,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:10:52,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:10:52,471 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-02 20:10:52,517 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:10:52,518 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:10:52,518 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:10:52,519 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:10:52,520 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:10:52,520 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:10:52,521 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:10:52,521 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:10:52,521 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:10:52,521 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:10:52,523 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:10:52,523 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:10:52,523 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:10:52,523 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:10:52,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:10:52,524 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-02 20:10:52,524 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-02 20:10:52,524 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-02 20:10:52,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:10:52,525 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 20:10:52,525 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:10:52,525 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:10:52,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:10:52,526 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:10:52,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:10:52,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:10:52,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:10:52,527 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:10:52,527 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:10:52,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:10:52,529 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_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 470d7065e9fd450e98d72326ef313763cf0710ea45f0a443b018e8a49bdf7927 [2022-11-02 20:10:52,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:10:52,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:10:52,879 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:10:52,880 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:10:52,882 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:10:52,884 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i [2022-11-02 20:10:52,955 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/data/3220e8ca3/7366830fd28948d796a927d96b7bbfeb/FLAGe6bd7ebf8 [2022-11-02 20:10:53,679 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:10:53,679 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i [2022-11-02 20:10:53,700 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/data/3220e8ca3/7366830fd28948d796a927d96b7bbfeb/FLAGe6bd7ebf8 [2022-11-02 20:10:53,881 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/data/3220e8ca3/7366830fd28948d796a927d96b7bbfeb [2022-11-02 20:10:53,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:10:53,886 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:10:53,888 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:10:53,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:10:53,893 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:10:53,894 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:10:53" (1/1) ... [2022-11-02 20:10:53,895 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58b8e935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:10:53, skipping insertion in model container [2022-11-02 20:10:53,896 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:10:53" (1/1) ... [2022-11-02 20:10:53,905 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:10:53,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:10:54,596 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_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i[33021,33034] [2022-11-02 20:10:54,740 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:10:54,758 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 20:10:54,760 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3be7eb0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:10:54, skipping insertion in model container [2022-11-02 20:10:54,760 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:10:54,761 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-02 20:10:54,763 INFO L158 Benchmark]: Toolchain (without parser) took 875.48ms. Allocated memory is still 90.2MB. Free memory was 64.0MB in the beginning and 57.2MB in the end (delta: 6.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 20:10:54,765 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 90.2MB. Free memory was 61.7MB in the beginning and 61.6MB in the end (delta: 50.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:10:54,767 INFO L158 Benchmark]: CACSL2BoogieTranslator took 872.26ms. Allocated memory is still 90.2MB. Free memory was 64.0MB in the beginning and 57.2MB in the end (delta: 6.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 20:10:54,771 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 90.2MB. Free memory was 61.7MB in the beginning and 61.6MB in the end (delta: 50.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 872.26ms. Allocated memory is still 90.2MB. Free memory was 64.0MB in the beginning and 57.2MB in the end (delta: 6.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 751]: 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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/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_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/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 32bit --witnessprinter.graph.data.programhash 470d7065e9fd450e98d72326ef313763cf0710ea45f0a443b018e8a49bdf7927 --- 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 20:10:57,283 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:10:57,286 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:10:57,319 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:10:57,320 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:10:57,321 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:10:57,323 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:10:57,326 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:10:57,328 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:10:57,329 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:10:57,331 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:10:57,332 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:10:57,333 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:10:57,334 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:10:57,336 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:10:57,338 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:10:57,339 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:10:57,340 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:10:57,343 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:10:57,345 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:10:57,348 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:10:57,349 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:10:57,351 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:10:57,353 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:10:57,361 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:10:57,373 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:10:57,374 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:10:57,376 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:10:57,376 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:10:57,377 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:10:57,378 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:10:57,379 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:10:57,380 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:10:57,381 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:10:57,385 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:10:57,386 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:10:57,387 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:10:57,388 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:10:57,389 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:10:57,391 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:10:57,393 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:10:57,394 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-02 20:10:57,449 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:10:57,450 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:10:57,450 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:10:57,450 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:10:57,451 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:10:57,451 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:10:57,452 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:10:57,452 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:10:57,453 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:10:57,453 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:10:57,453 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:10:57,453 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:10:57,454 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:10:57,454 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:10:57,454 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:10:57,454 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-02 20:10:57,455 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-02 20:10:57,455 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-02 20:10:57,455 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:10:57,455 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 20:10:57,455 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 20:10:57,456 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 20:10:57,456 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:10:57,456 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:10:57,456 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:10:57,457 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:10:57,457 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:10:57,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:10:57,457 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:10:57,458 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:10:57,458 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 20:10:57,458 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 20:10:57,458 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 20:10:57,459 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_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 470d7065e9fd450e98d72326ef313763cf0710ea45f0a443b018e8a49bdf7927 [2022-11-02 20:10:57,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:10:57,932 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:10:57,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:10:57,937 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:10:57,940 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:10:57,941 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i [2022-11-02 20:10:58,015 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/data/eec82e6dc/36df6a2ef10d45c1881c7dbd026832b8/FLAGa522e8cdd [2022-11-02 20:10:58,709 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:10:58,710 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i [2022-11-02 20:10:58,730 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/data/eec82e6dc/36df6a2ef10d45c1881c7dbd026832b8/FLAGa522e8cdd [2022-11-02 20:10:58,936 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/data/eec82e6dc/36df6a2ef10d45c1881c7dbd026832b8 [2022-11-02 20:10:58,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:10:58,940 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:10:58,942 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:10:58,946 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:10:58,950 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:10:58,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:10:58" (1/1) ... [2022-11-02 20:10:58,953 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2df66cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:10:58, skipping insertion in model container [2022-11-02 20:10:58,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:10:58" (1/1) ... [2022-11-02 20:10:58,962 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:10:59,005 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:10:59,525 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_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i[33021,33034] [2022-11-02 20:10:59,648 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:10:59,668 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-02 20:10:59,679 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:10:59,698 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_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i[33021,33034] [2022-11-02 20:10:59,740 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:10:59,745 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:10:59,789 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_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i[33021,33034] [2022-11-02 20:10:59,831 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:10:59,873 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:10:59,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:10:59 WrapperNode [2022-11-02 20:10:59,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:10:59,875 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:10:59,875 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:10:59,876 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:10:59,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:10:59" (1/1) ... [2022-11-02 20:10:59,909 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:10:59" (1/1) ... [2022-11-02 20:10:59,952 INFO L138 Inliner]: procedures = 180, calls = 186, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 628 [2022-11-02 20:10:59,953 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:10:59,954 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:10:59,954 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:10:59,954 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:10:59,989 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:10:59" (1/1) ... [2022-11-02 20:10:59,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:10:59" (1/1) ... [2022-11-02 20:10:59,997 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:10:59" (1/1) ... [2022-11-02 20:10:59,997 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:10:59" (1/1) ... [2022-11-02 20:11:00,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:10:59" (1/1) ... [2022-11-02 20:11:00,094 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:10:59" (1/1) ... [2022-11-02 20:11:00,098 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:10:59" (1/1) ... [2022-11-02 20:11:00,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:10:59" (1/1) ... [2022-11-02 20:11:00,121 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:11:00,122 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:11:00,122 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:11:00,122 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:11:00,123 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:10:59" (1/1) ... [2022-11-02 20:11:00,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:11:00,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:11:00,164 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:11:00,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:11:00,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-02 20:11:00,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-02 20:11:00,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-02 20:11:00,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-02 20:11:00,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-02 20:11:00,220 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-02 20:11:00,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:11:00,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:11:00,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:11:00,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:11:00,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:11:00,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:11:00,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-02 20:11:00,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-02 20:11:00,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:11:00,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:11:00,429 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:11:00,432 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:11:00,436 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-02 20:11:04,131 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:11:04,151 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:11:04,151 INFO L300 CfgBuilder]: Removed 31 assume(true) statements. [2022-11-02 20:11:04,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:11:04 BoogieIcfgContainer [2022-11-02 20:11:04,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:11:04,156 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:11:04,156 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:11:04,159 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:11:04,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:10:58" (1/3) ... [2022-11-02 20:11:04,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@115e1111 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:11:04, skipping insertion in model container [2022-11-02 20:11:04,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:10:59" (2/3) ... [2022-11-02 20:11:04,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@115e1111 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:11:04, skipping insertion in model container [2022-11-02 20:11:04,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:11:04" (3/3) ... [2022-11-02 20:11:04,162 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test1-1.i [2022-11-02 20:11:04,181 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:11:04,181 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 330 error locations. [2022-11-02 20:11:04,236 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:11:04,246 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;@51ef25e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:11:04,246 INFO L358 AbstractCegarLoop]: Starting to check reachability of 330 error locations. [2022-11-02 20:11:04,255 INFO L276 IsEmpty]: Start isEmpty. Operand has 668 states, 325 states have (on average 2.230769230769231) internal successors, (725), 662 states have internal predecessors, (725), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-02 20:11:04,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:11:04,262 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:04,263 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:11:04,263 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2022-11-02 20:11:04,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:04,270 INFO L85 PathProgramCache]: Analyzing trace with hash 37287509, now seen corresponding path program 1 times [2022-11-02 20:11:04,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:11:04,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1827034590] [2022-11-02 20:11:04,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:04,284 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:11:04,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:11:04,290 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:11:04,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 20:11:04,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:04,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-02 20:11:04,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:11:04,470 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 20:11:04,471 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:11:04,472 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:11:04,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1827034590] [2022-11-02 20:11:04,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1827034590] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:11:04,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:11:04,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:11:04,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227566163] [2022-11-02 20:11:04,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:11:04,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:11:04,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:11:04,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:11:04,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:11:04,511 INFO L87 Difference]: Start difference. First operand has 668 states, 325 states have (on average 2.230769230769231) internal successors, (725), 662 states have internal predecessors, (725), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:11:04,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:04,561 INFO L93 Difference]: Finished difference Result 659 states and 706 transitions. [2022-11-02 20:11:04,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:11:04,564 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-02 20:11:04,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:04,579 INFO L225 Difference]: With dead ends: 659 [2022-11-02 20:11:04,579 INFO L226 Difference]: Without dead ends: 657 [2022-11-02 20:11:04,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:11:04,584 INFO L413 NwaCegarLoop]: 706 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:04,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:11:04,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2022-11-02 20:11:04,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 657. [2022-11-02 20:11:04,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 320 states have (on average 2.11875) internal successors, (678), 651 states have internal predecessors, (678), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-02 20:11:04,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 704 transitions. [2022-11-02 20:11:04,679 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 704 transitions. Word has length 5 [2022-11-02 20:11:04,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:04,679 INFO L495 AbstractCegarLoop]: Abstraction has 657 states and 704 transitions. [2022-11-02 20:11:04,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:11:04,680 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 704 transitions. [2022-11-02 20:11:04,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:11:04,681 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:04,681 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:11:04,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:11:04,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:11:04,892 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2022-11-02 20:11:04,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:04,892 INFO L85 PathProgramCache]: Analyzing trace with hash 37287571, now seen corresponding path program 1 times [2022-11-02 20:11:04,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:11:04,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1189260840] [2022-11-02 20:11:04,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:04,893 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:11:04,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:11:04,895 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:11:04,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 20:11:05,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:05,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:11:05,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:11:05,101 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 20:11:05,117 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 20:11:05,117 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:11:05,118 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:11:05,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1189260840] [2022-11-02 20:11:05,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1189260840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:11:05,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:11:05,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:11:05,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770853153] [2022-11-02 20:11:05,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:11:05,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:11:05,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:11:05,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:11:05,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:11:05,121 INFO L87 Difference]: Start difference. First operand 657 states and 704 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:11:06,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:06,669 INFO L93 Difference]: Finished difference Result 615 states and 663 transitions. [2022-11-02 20:11:06,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:11:06,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-02 20:11:06,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:06,673 INFO L225 Difference]: With dead ends: 615 [2022-11-02 20:11:06,673 INFO L226 Difference]: Without dead ends: 615 [2022-11-02 20:11:06,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:11:06,675 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 596 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:06,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 351 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-02 20:11:06,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2022-11-02 20:11:06,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 608. [2022-11-02 20:11:06,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 320 states have (on average 1.965625) internal successors, (629), 602 states have internal predecessors, (629), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-02 20:11:06,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 655 transitions. [2022-11-02 20:11:06,696 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 655 transitions. Word has length 5 [2022-11-02 20:11:06,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:06,697 INFO L495 AbstractCegarLoop]: Abstraction has 608 states and 655 transitions. [2022-11-02 20:11:06,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:11:06,697 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 655 transitions. [2022-11-02 20:11:06,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:11:06,698 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:06,698 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:11:06,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:11:06,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:11:06,909 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2022-11-02 20:11:06,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:06,910 INFO L85 PathProgramCache]: Analyzing trace with hash 37287572, now seen corresponding path program 1 times [2022-11-02 20:11:06,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:11:06,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [639343198] [2022-11-02 20:11:06,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:06,911 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:11:06,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:11:06,912 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:11:06,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 20:11:07,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:07,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:11:07,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:11:07,044 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 20:11:07,066 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 20:11:07,066 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:11:07,066 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:11:07,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [639343198] [2022-11-02 20:11:07,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [639343198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:11:07,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:11:07,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:11:07,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791320324] [2022-11-02 20:11:07,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:11:07,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:11:07,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:11:07,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:11:07,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:11:07,069 INFO L87 Difference]: Start difference. First operand 608 states and 655 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:11:08,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:08,892 INFO L93 Difference]: Finished difference Result 675 states and 726 transitions. [2022-11-02 20:11:08,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:11:08,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-02 20:11:08,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:08,896 INFO L225 Difference]: With dead ends: 675 [2022-11-02 20:11:08,896 INFO L226 Difference]: Without dead ends: 675 [2022-11-02 20:11:08,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:11:08,900 INFO L413 NwaCegarLoop]: 530 mSDtfsCounter, 254 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:08,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 752 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-02 20:11:08,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2022-11-02 20:11:08,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 630. [2022-11-02 20:11:08,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 352 states have (on average 1.9460227272727273) internal successors, (685), 624 states have internal predecessors, (685), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-02 20:11:08,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 711 transitions. [2022-11-02 20:11:08,921 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 711 transitions. Word has length 5 [2022-11-02 20:11:08,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:08,922 INFO L495 AbstractCegarLoop]: Abstraction has 630 states and 711 transitions. [2022-11-02 20:11:08,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:11:08,922 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 711 transitions. [2022-11-02 20:11:08,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-02 20:11:08,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:08,923 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-02 20:11:08,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:11:09,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:11:09,134 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr322REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2022-11-02 20:11:09,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:09,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1156735106, now seen corresponding path program 1 times [2022-11-02 20:11:09,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:11:09,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1710649409] [2022-11-02 20:11:09,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:09,136 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:11:09,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:11:09,138 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:11:09,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 20:11:09,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:09,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:11:09,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:11:09,234 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 20:11:09,235 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:11:09,235 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:11:09,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1710649409] [2022-11-02 20:11:09,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1710649409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:11:09,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:11:09,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:11:09,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8257542] [2022-11-02 20:11:09,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:11:09,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:11:09,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:11:09,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:11:09,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:11:09,247 INFO L87 Difference]: Start difference. First operand 630 states and 711 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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 20:11:09,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:09,361 INFO L93 Difference]: Finished difference Result 1211 states and 1353 transitions. [2022-11-02 20:11:09,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:11:09,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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 20:11:09,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:09,373 INFO L225 Difference]: With dead ends: 1211 [2022-11-02 20:11:09,374 INFO L226 Difference]: Without dead ends: 1211 [2022-11-02 20:11:09,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 20:11:09,375 INFO L413 NwaCegarLoop]: 866 mSDtfsCounter, 569 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 1505 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:09,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 1505 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:11:09,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2022-11-02 20:11:09,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 631. [2022-11-02 20:11:09,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 353 states have (on average 1.9433427762039661) internal successors, (686), 625 states have internal predecessors, (686), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-02 20:11:09,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 712 transitions. [2022-11-02 20:11:09,413 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 712 transitions. Word has length 6 [2022-11-02 20:11:09,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:09,414 INFO L495 AbstractCegarLoop]: Abstraction has 631 states and 712 transitions. [2022-11-02 20:11:09,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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 20:11:09,427 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 712 transitions. [2022-11-02 20:11:09,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:11:09,427 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:09,428 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:11:09,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:11:09,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:11:09,628 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2022-11-02 20:11:09,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:09,629 INFO L85 PathProgramCache]: Analyzing trace with hash 334651453, now seen corresponding path program 1 times [2022-11-02 20:11:09,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:11:09,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [62601480] [2022-11-02 20:11:09,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:09,630 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:11:09,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:11:09,632 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:11:09,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 20:11:09,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:09,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:11:09,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:11:09,784 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 20:11:09,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:11:09,785 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:11:09,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [62601480] [2022-11-02 20:11:09,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [62601480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:11:09,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:11:09,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:11:09,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351288521] [2022-11-02 20:11:09,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:11:09,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:11:09,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:11:09,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:11:09,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:11:09,788 INFO L87 Difference]: Start difference. First operand 631 states and 712 transitions. Second operand has 3 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 20:11:09,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:09,825 INFO L93 Difference]: Finished difference Result 595 states and 675 transitions. [2022-11-02 20:11:09,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:11:09,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 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 11 [2022-11-02 20:11:09,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:09,830 INFO L225 Difference]: With dead ends: 595 [2022-11-02 20:11:09,830 INFO L226 Difference]: Without dead ends: 595 [2022-11-02 20:11:09,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 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 20:11:09,831 INFO L413 NwaCegarLoop]: 597 mSDtfsCounter, 563 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:09,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 627 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:11:09,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2022-11-02 20:11:09,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 589. [2022-11-02 20:11:09,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 335 states have (on average 1.9194029850746268) internal successors, (643), 583 states have internal predecessors, (643), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-02 20:11:09,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 669 transitions. [2022-11-02 20:11:09,851 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 669 transitions. Word has length 11 [2022-11-02 20:11:09,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:09,851 INFO L495 AbstractCegarLoop]: Abstraction has 589 states and 669 transitions. [2022-11-02 20:11:09,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 20:11:09,852 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 669 transitions. [2022-11-02 20:11:09,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:11:09,853 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:09,853 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:11:09,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:11:10,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:11:10,073 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2022-11-02 20:11:10,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:10,074 INFO L85 PathProgramCache]: Analyzing trace with hash -522505033, now seen corresponding path program 1 times [2022-11-02 20:11:10,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:11:10,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [561336990] [2022-11-02 20:11:10,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:10,075 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:11:10,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:11:10,076 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:11:10,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 20:11:10,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:10,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:11:10,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:11:10,255 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 20:11:10,257 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:11:10,257 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:11:10,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [561336990] [2022-11-02 20:11:10,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [561336990] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:11:10,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:11:10,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:11:10,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42847768] [2022-11-02 20:11:10,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:11:10,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:11:10,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:11:10,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:11:10,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:11:10,262 INFO L87 Difference]: Start difference. First operand 589 states and 669 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:11:10,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:10,351 INFO L93 Difference]: Finished difference Result 574 states and 647 transitions. [2022-11-02 20:11:10,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:11:10,352 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 20:11:10,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:10,356 INFO L225 Difference]: With dead ends: 574 [2022-11-02 20:11:10,356 INFO L226 Difference]: Without dead ends: 574 [2022-11-02 20:11:10,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:11:10,359 INFO L413 NwaCegarLoop]: 552 mSDtfsCounter, 534 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:10,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 1127 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:11:10,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2022-11-02 20:11:10,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 567. [2022-11-02 20:11:10,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 327 states have (on average 1.8776758409785932) internal successors, (614), 561 states have internal predecessors, (614), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-02 20:11:10,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 640 transitions. [2022-11-02 20:11:10,375 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 640 transitions. Word has length 13 [2022-11-02 20:11:10,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:10,375 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 640 transitions. [2022-11-02 20:11:10,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:11:10,376 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 640 transitions. [2022-11-02 20:11:10,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-02 20:11:10,377 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:10,377 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:11:10,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:11:10,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:11:10,586 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2022-11-02 20:11:10,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:10,587 INFO L85 PathProgramCache]: Analyzing trace with hash -22216187, now seen corresponding path program 1 times [2022-11-02 20:11:10,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:11:10,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1647570095] [2022-11-02 20:11:10,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:10,588 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:11:10,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:11:10,589 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:11:10,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 20:11:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:10,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:11:10,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:11:10,738 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 20:11:10,835 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 20:11:10,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:11:10,836 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:11:10,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1647570095] [2022-11-02 20:11:10,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1647570095] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:11:10,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:11:10,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:11:10,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260602775] [2022-11-02 20:11:10,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:11:10,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:11:10,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:11:10,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:11:10,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:11:10,846 INFO L87 Difference]: Start difference. First operand 567 states and 640 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:11:12,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:12,348 INFO L93 Difference]: Finished difference Result 611 states and 705 transitions. [2022-11-02 20:11:12,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:11:12,349 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-02 20:11:12,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:12,352 INFO L225 Difference]: With dead ends: 611 [2022-11-02 20:11:12,352 INFO L226 Difference]: Without dead ends: 611 [2022-11-02 20:11:12,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:11:12,353 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 960 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:12,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [970 Valid, 385 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-02 20:11:12,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2022-11-02 20:11:12,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 563. [2022-11-02 20:11:12,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 327 states have (on average 1.8654434250764527) internal successors, (610), 557 states have internal predecessors, (610), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-02 20:11:12,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 636 transitions. [2022-11-02 20:11:12,375 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 636 transitions. Word has length 27 [2022-11-02 20:11:12,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:12,375 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 636 transitions. [2022-11-02 20:11:12,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:11:12,376 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 636 transitions. [2022-11-02 20:11:12,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-02 20:11:12,377 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:12,377 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:11:12,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:11:12,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:11:12,582 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2022-11-02 20:11:12,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:12,583 INFO L85 PathProgramCache]: Analyzing trace with hash -22216186, now seen corresponding path program 1 times [2022-11-02 20:11:12,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:11:12,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [267047419] [2022-11-02 20:11:12,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:12,584 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:11:12,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:11:12,584 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:11:12,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 20:11:12,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:12,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:11:12,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:11:12,741 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 20:11:12,936 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 20:11:12,937 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:11:12,937 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:11:12,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [267047419] [2022-11-02 20:11:12,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [267047419] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:11:12,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:11:12,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:11:12,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894116903] [2022-11-02 20:11:12,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:11:12,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:11:12,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:11:12,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:11:12,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:11:12,940 INFO L87 Difference]: Start difference. First operand 563 states and 636 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:11:15,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:15,395 INFO L93 Difference]: Finished difference Result 645 states and 708 transitions. [2022-11-02 20:11:15,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:11:15,398 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-02 20:11:15,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:15,401 INFO L225 Difference]: With dead ends: 645 [2022-11-02 20:11:15,401 INFO L226 Difference]: Without dead ends: 645 [2022-11-02 20:11:15,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:11:15,402 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 351 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:15,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 923 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-02 20:11:15,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2022-11-02 20:11:15,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 559. [2022-11-02 20:11:15,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 327 states have (on average 1.853211009174312) internal successors, (606), 553 states have internal predecessors, (606), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-02 20:11:15,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 632 transitions. [2022-11-02 20:11:15,418 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 632 transitions. Word has length 27 [2022-11-02 20:11:15,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:15,419 INFO L495 AbstractCegarLoop]: Abstraction has 559 states and 632 transitions. [2022-11-02 20:11:15,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:11:15,419 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 632 transitions. [2022-11-02 20:11:15,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-02 20:11:15,420 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:15,420 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:11:15,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:11:15,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:11:15,634 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2022-11-02 20:11:15,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:15,635 INFO L85 PathProgramCache]: Analyzing trace with hash 810363537, now seen corresponding path program 1 times [2022-11-02 20:11:15,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:11:15,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [207678444] [2022-11-02 20:11:15,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:15,636 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:11:15,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:11:15,637 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:11:15,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 20:11:15,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:15,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:11:15,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:11:15,926 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 20:11:15,927 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:11:15,927 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:11:15,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [207678444] [2022-11-02 20:11:15,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [207678444] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:11:15,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:11:15,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:11:15,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856158391] [2022-11-02 20:11:15,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:11:15,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:11:15,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:11:15,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:11:15,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:11:15,930 INFO L87 Difference]: Start difference. First operand 559 states and 632 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 20:11:16,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:16,014 INFO L93 Difference]: Finished difference Result 559 states and 628 transitions. [2022-11-02 20:11:16,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:11:16,015 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 42 [2022-11-02 20:11:16,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:16,018 INFO L225 Difference]: With dead ends: 559 [2022-11-02 20:11:16,019 INFO L226 Difference]: Without dead ends: 559 [2022-11-02 20:11:16,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:11:16,022 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 510 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:16,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [523 Valid, 1105 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:11:16,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2022-11-02 20:11:16,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 553. [2022-11-02 20:11:16,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 321 states have (on average 1.8566978193146417) internal successors, (596), 547 states have internal predecessors, (596), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-02 20:11:16,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 622 transitions. [2022-11-02 20:11:16,043 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 622 transitions. Word has length 42 [2022-11-02 20:11:16,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:16,044 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 622 transitions. [2022-11-02 20:11:16,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 20:11:16,044 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 622 transitions. [2022-11-02 20:11:16,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-02 20:11:16,045 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:16,046 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:11:16,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:11:16,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:11:16,261 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2022-11-02 20:11:16,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:16,262 INFO L85 PathProgramCache]: Analyzing trace with hash 2087041861, now seen corresponding path program 1 times [2022-11-02 20:11:16,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:11:16,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1493401404] [2022-11-02 20:11:16,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:16,263 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:11:16,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:11:16,264 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:11:16,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 20:11:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:16,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:11:16,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:11:16,837 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 20:11:16,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:11:16,838 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:11:16,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1493401404] [2022-11-02 20:11:16,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1493401404] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:11:16,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:11:16,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:11:16,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283654661] [2022-11-02 20:11:16,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:11:16,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:11:16,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:11:16,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:11:16,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:11:16,840 INFO L87 Difference]: Start difference. First operand 553 states and 622 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 20:11:16,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:16,950 INFO L93 Difference]: Finished difference Result 599 states and 668 transitions. [2022-11-02 20:11:16,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:11:16,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 50 [2022-11-02 20:11:16,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:16,954 INFO L225 Difference]: With dead ends: 599 [2022-11-02 20:11:16,955 INFO L226 Difference]: Without dead ends: 599 [2022-11-02 20:11:16,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 48 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 20:11:16,956 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 67 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:16,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 1012 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:11:16,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2022-11-02 20:11:16,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2022-11-02 20:11:16,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 367 states have (on average 1.7493188010899183) internal successors, (642), 593 states have internal predecessors, (642), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-02 20:11:16,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 668 transitions. [2022-11-02 20:11:16,971 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 668 transitions. Word has length 50 [2022-11-02 20:11:16,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:16,972 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 668 transitions. [2022-11-02 20:11:16,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 20:11:16,972 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 668 transitions. [2022-11-02 20:11:16,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-02 20:11:16,974 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:16,974 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:11:16,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:11:17,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:11:17,191 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2022-11-02 20:11:17,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:17,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1009990608, now seen corresponding path program 1 times [2022-11-02 20:11:17,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:11:17,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [93632713] [2022-11-02 20:11:17,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:17,192 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:11:17,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:11:17,194 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:11:17,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 20:11:17,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:17,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:11:17,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:11:17,611 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 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-02 20:11:17,622 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 20:11:18,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:11:18,219 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 20:11:18,241 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-02 20:11:18,242 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 20:11:18,263 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 20:11:18,264 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:11:18,264 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:11:18,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [93632713] [2022-11-02 20:11:18,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [93632713] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:11:18,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:11:18,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:11:18,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224615005] [2022-11-02 20:11:18,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:11:18,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:11:18,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:11:18,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:11:18,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:11:18,266 INFO L87 Difference]: Start difference. First operand 599 states and 668 transitions. Second operand has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:11:19,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:19,721 INFO L93 Difference]: Finished difference Result 568 states and 638 transitions. [2022-11-02 20:11:19,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:11:19,722 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-11-02 20:11:19,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:19,724 INFO L225 Difference]: With dead ends: 568 [2022-11-02 20:11:19,724 INFO L226 Difference]: Without dead ends: 568 [2022-11-02 20:11:19,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 50 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 20:11:19,725 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 827 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:19,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [830 Valid, 260 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-02 20:11:19,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2022-11-02 20:11:19,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 529. [2022-11-02 20:11:19,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 335 states have (on average 1.6059701492537313) internal successors, (538), 523 states have internal predecessors, (538), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-02 20:11:19,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 564 transitions. [2022-11-02 20:11:19,739 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 564 transitions. Word has length 53 [2022-11-02 20:11:19,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:19,739 INFO L495 AbstractCegarLoop]: Abstraction has 529 states and 564 transitions. [2022-11-02 20:11:19,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:11:19,740 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 564 transitions. [2022-11-02 20:11:19,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-02 20:11:19,741 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:19,741 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1] [2022-11-02 20:11:19,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-11-02 20:11:19,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:11:19,954 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2022-11-02 20:11:19,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:19,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678057, now seen corresponding path program 1 times [2022-11-02 20:11:19,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:11:19,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1911615281] [2022-11-02 20:11:19,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:19,956 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:11:19,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:11:19,957 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:11:19,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 20:11:20,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:20,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:11:20,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:11:20,250 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 20:11:20,269 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 13 treesize of output 9 [2022-11-02 20:11:20,306 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 23 treesize of output 11 [2022-11-02 20:11:20,320 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 20:11:20,321 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:11:20,321 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:11:20,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1911615281] [2022-11-02 20:11:20,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1911615281] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:11:20,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:11:20,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:11:20,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76889256] [2022-11-02 20:11:20,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:11:20,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:11:20,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:11:20,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:11:20,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:11:20,324 INFO L87 Difference]: Start difference. First operand 529 states and 564 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 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 20:11:22,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:22,235 INFO L93 Difference]: Finished difference Result 528 states and 563 transitions. [2022-11-02 20:11:22,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:11:22,236 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-11-02 20:11:22,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:22,238 INFO L225 Difference]: With dead ends: 528 [2022-11-02 20:11:22,238 INFO L226 Difference]: Without dead ends: 528 [2022-11-02 20:11:22,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:11:22,239 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 4 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:22,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1325 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-02 20:11:22,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2022-11-02 20:11:22,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 528. [2022-11-02 20:11:22,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 335 states have (on average 1.6029850746268657) internal successors, (537), 522 states have internal predecessors, (537), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-02 20:11:22,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 563 transitions. [2022-11-02 20:11:22,250 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 563 transitions. Word has length 58 [2022-11-02 20:11:22,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:22,251 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 563 transitions. [2022-11-02 20:11:22,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 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 20:11:22,251 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 563 transitions. [2022-11-02 20:11:22,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-02 20:11:22,252 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:22,252 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1] [2022-11-02 20:11:22,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:11:22,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:11:22,467 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2022-11-02 20:11:22,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:22,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678056, now seen corresponding path program 1 times [2022-11-02 20:11:22,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:11:22,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1679690660] [2022-11-02 20:11:22,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:22,468 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:11:22,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:11:22,470 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:11:22,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 20:11:22,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:22,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:11:22,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:11:22,759 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 20:11:22,783 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 13 treesize of output 9 [2022-11-02 20:11:22,793 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 13 treesize of output 9 [2022-11-02 20:11:22,855 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 21 treesize of output 9 [2022-11-02 20:11:22,864 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 19 treesize of output 7 [2022-11-02 20:11:22,882 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 20:11:22,883 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:11:22,883 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:11:22,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1679690660] [2022-11-02 20:11:22,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1679690660] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:11:22,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:11:22,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:11:22,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391037831] [2022-11-02 20:11:22,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:11:22,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:11:22,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:11:22,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:11:22,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:11:22,885 INFO L87 Difference]: Start difference. First operand 528 states and 563 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 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 20:11:25,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:25,156 INFO L93 Difference]: Finished difference Result 527 states and 562 transitions. [2022-11-02 20:11:25,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:11:25,157 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-11-02 20:11:25,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:25,159 INFO L225 Difference]: With dead ends: 527 [2022-11-02 20:11:25,159 INFO L226 Difference]: Without dead ends: 527 [2022-11-02 20:11:25,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:11:25,160 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 2 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1335 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:25,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1335 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-02 20:11:25,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2022-11-02 20:11:25,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 527. [2022-11-02 20:11:25,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 334 states have (on average 1.6047904191616766) internal successors, (536), 521 states have internal predecessors, (536), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-02 20:11:25,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 562 transitions. [2022-11-02 20:11:25,170 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 562 transitions. Word has length 58 [2022-11-02 20:11:25,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:25,171 INFO L495 AbstractCegarLoop]: Abstraction has 527 states and 562 transitions. [2022-11-02 20:11:25,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 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 20:11:25,171 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 562 transitions. [2022-11-02 20:11:25,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-02 20:11:25,172 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:25,172 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:11:25,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 20:11:25,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:11:25,388 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2022-11-02 20:11:25,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:25,388 INFO L85 PathProgramCache]: Analyzing trace with hash -624458498, now seen corresponding path program 1 times [2022-11-02 20:11:25,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:11:25,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1674887465] [2022-11-02 20:11:25,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:25,389 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:11:25,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:11:25,389 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:11:25,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 20:11:25,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:25,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:11:25,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:11:25,693 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 20:11:25,693 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:11:25,693 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:11:25,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1674887465] [2022-11-02 20:11:25,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1674887465] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:11:25,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:11:25,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:11:25,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904438343] [2022-11-02 20:11:25,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:11:25,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:11:25,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:11:25,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:11:25,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:11:25,698 INFO L87 Difference]: Start difference. First operand 527 states and 562 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 20:11:25,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:25,749 INFO L93 Difference]: Finished difference Result 530 states and 566 transitions. [2022-11-02 20:11:25,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:11:25,750 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2022-11-02 20:11:25,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:25,753 INFO L225 Difference]: With dead ends: 530 [2022-11-02 20:11:25,753 INFO L226 Difference]: Without dead ends: 530 [2022-11-02 20:11:25,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:11:25,754 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 2 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1531 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:25,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1531 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:11:25,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2022-11-02 20:11:25,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 530. [2022-11-02 20:11:25,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 336 states have (on average 1.6041666666666667) internal successors, (539), 524 states have internal predecessors, (539), 13 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2022-11-02 20:11:25,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 566 transitions. [2022-11-02 20:11:25,766 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 566 transitions. Word has length 66 [2022-11-02 20:11:25,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:25,767 INFO L495 AbstractCegarLoop]: Abstraction has 530 states and 566 transitions. [2022-11-02 20:11:25,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 20:11:25,767 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 566 transitions. [2022-11-02 20:11:25,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-02 20:11:25,768 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:25,768 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:11:25,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-02 20:11:25,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:11:25,983 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2022-11-02 20:11:25,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:25,983 INFO L85 PathProgramCache]: Analyzing trace with hash -594716233, now seen corresponding path program 1 times [2022-11-02 20:11:25,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:11:25,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [57049756] [2022-11-02 20:11:25,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:25,984 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:11:25,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:11:25,985 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:11:25,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 20:11:26,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:26,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:11:26,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:11:26,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:11:26,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:11:26,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:11:26,417 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:11:26,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [57049756] [2022-11-02 20:11:26,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [57049756] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:11:26,422 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:11:26,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-02 20:11:26,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242285943] [2022-11-02 20:11:26,423 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:11:26,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:11:26,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:11:26,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:11:26,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:11:26,424 INFO L87 Difference]: Start difference. First operand 530 states and 566 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 20:11:26,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:26,645 INFO L93 Difference]: Finished difference Result 542 states and 583 transitions. [2022-11-02 20:11:26,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:11:26,646 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 67 [2022-11-02 20:11:26,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:26,648 INFO L225 Difference]: With dead ends: 542 [2022-11-02 20:11:26,649 INFO L226 Difference]: Without dead ends: 542 [2022-11-02 20:11:26,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:11:26,649 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 23 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 1535 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:26,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 1535 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:11:26,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2022-11-02 20:11:26,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 540. [2022-11-02 20:11:26,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 345 states have (on average 1.6057971014492753) internal successors, (554), 533 states have internal predecessors, (554), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2022-11-02 20:11:26,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 581 transitions. [2022-11-02 20:11:26,665 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 581 transitions. Word has length 67 [2022-11-02 20:11:26,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:26,666 INFO L495 AbstractCegarLoop]: Abstraction has 540 states and 581 transitions. [2022-11-02 20:11:26,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 20:11:26,666 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 581 transitions. [2022-11-02 20:11:26,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-02 20:11:26,667 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:26,667 INFO L195 NwaCegarLoop]: trace histogram [4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:11:26,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 20:11:26,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:11:26,882 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2022-11-02 20:11:26,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:26,882 INFO L85 PathProgramCache]: Analyzing trace with hash 133393214, now seen corresponding path program 2 times [2022-11-02 20:11:26,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:11:26,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [777055288] [2022-11-02 20:11:26,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:11:26,883 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:11:26,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:11:26,884 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:11:26,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 20:11:27,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:11:27,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:11:27,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:11:27,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:11:27,416 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:11:27,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:11:27,698 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:11:27,698 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:11:27,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [777055288] [2022-11-02 20:11:27,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [777055288] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:11:27,698 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:11:27,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-02 20:11:27,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667289038] [2022-11-02 20:11:27,699 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:11:27,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:11:27,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:11:27,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:11:27,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:11:27,700 INFO L87 Difference]: Start difference. First operand 540 states and 581 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 20:11:28,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:28,492 INFO L93 Difference]: Finished difference Result 561 states and 609 transitions. [2022-11-02 20:11:28,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:11:28,493 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 70 [2022-11-02 20:11:28,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:28,495 INFO L225 Difference]: With dead ends: 561 [2022-11-02 20:11:28,495 INFO L226 Difference]: Without dead ends: 557 [2022-11-02 20:11:28,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=257, Invalid=499, Unknown=0, NotChecked=0, Total=756 [2022-11-02 20:11:28,497 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 63 mSDsluCounter, 2563 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 3079 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:28,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 3079 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:11:28,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2022-11-02 20:11:28,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 549. [2022-11-02 20:11:28,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 354 states have (on average 1.5988700564971752) internal successors, (566), 542 states have internal predecessors, (566), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2022-11-02 20:11:28,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 593 transitions. [2022-11-02 20:11:28,513 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 593 transitions. Word has length 70 [2022-11-02 20:11:28,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:28,514 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 593 transitions. [2022-11-02 20:11:28,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 20:11:28,514 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 593 transitions. [2022-11-02 20:11:28,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 20:11:28,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:28,515 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:11:28,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 20:11:28,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:11:28,731 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2022-11-02 20:11:28,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:28,731 INFO L85 PathProgramCache]: Analyzing trace with hash 419670174, now seen corresponding path program 3 times [2022-11-02 20:11:28,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:11:28,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2102385976] [2022-11-02 20:11:28,732 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:11:28,732 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:11:28,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:11:28,734 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:11:28,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 20:11:29,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-02 20:11:29,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:11:29,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:11:29,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:11:29,547 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:11:29,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:11:30,453 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:11:30,453 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:11:30,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2102385976] [2022-11-02 20:11:30,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2102385976] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:11:30,454 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:11:30,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-11-02 20:11:30,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86799488] [2022-11-02 20:11:30,454 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:11:30,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-02 20:11:30,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:11:30,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-02 20:11:30,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2022-11-02 20:11:30,456 INFO L87 Difference]: Start difference. First operand 549 states and 593 transitions. Second operand has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 20:11:34,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:34,807 INFO L93 Difference]: Finished difference Result 591 states and 655 transitions. [2022-11-02 20:11:34,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-02 20:11:34,808 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 76 [2022-11-02 20:11:34,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:34,811 INFO L225 Difference]: With dead ends: 591 [2022-11-02 20:11:34,811 INFO L226 Difference]: Without dead ends: 585 [2022-11-02 20:11:34,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=793, Invalid=1559, Unknown=0, NotChecked=0, Total=2352 [2022-11-02 20:11:34,812 INFO L413 NwaCegarLoop]: 521 mSDtfsCounter, 196 mSDsluCounter, 5688 mSDsCounter, 0 mSdLazyCounter, 730 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 6209 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:34,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 6209 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 730 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-02 20:11:34,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-11-02 20:11:34,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 567. [2022-11-02 20:11:34,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 372 states have (on average 1.5833333333333333) internal successors, (589), 560 states have internal predecessors, (589), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2022-11-02 20:11:34,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 616 transitions. [2022-11-02 20:11:34,827 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 616 transitions. Word has length 76 [2022-11-02 20:11:34,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:34,827 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 616 transitions. [2022-11-02 20:11:34,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 20:11:34,827 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 616 transitions. [2022-11-02 20:11:34,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-02 20:11:34,828 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:34,828 INFO L195 NwaCegarLoop]: trace histogram [22, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:11:34,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 20:11:35,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:11:35,042 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2022-11-02 20:11:35,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:35,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1934068574, now seen corresponding path program 4 times [2022-11-02 20:11:35,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:11:35,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1377391744] [2022-11-02 20:11:35,044 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 20:11:35,044 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:11:35,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:11:35,045 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:11:35,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 20:11:35,395 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 20:11:35,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:11:35,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-02 20:11:35,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:11:35,835 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:11:35,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:11:38,121 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:11:38,122 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:11:38,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1377391744] [2022-11-02 20:11:38,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1377391744] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:11:38,122 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:11:38,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-11-02 20:11:38,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957996452] [2022-11-02 20:11:38,123 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:11:38,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-02 20:11:38,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:11:38,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-02 20:11:38,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=672, Invalid=1778, Unknown=0, NotChecked=0, Total=2450 [2022-11-02 20:11:38,125 INFO L87 Difference]: Start difference. First operand 567 states and 616 transitions. Second operand has 50 states, 50 states have (on average 2.22) internal successors, (111), 50 states have internal predecessors, (111), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 20:11:53,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:53,279 INFO L93 Difference]: Finished difference Result 647 states and 728 transitions. [2022-11-02 20:11:53,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-11-02 20:11:53,281 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.22) internal successors, (111), 50 states have internal predecessors, (111), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 88 [2022-11-02 20:11:53,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:53,283 INFO L225 Difference]: With dead ends: 647 [2022-11-02 20:11:53,283 INFO L226 Difference]: Without dead ends: 643 [2022-11-02 20:11:53,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1383 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=3791, Invalid=9319, Unknown=0, NotChecked=0, Total=13110 [2022-11-02 20:11:53,287 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 393 mSDsluCounter, 13692 mSDsCounter, 0 mSdLazyCounter, 2500 mSolverCounterSat, 369 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 14225 SdHoareTripleChecker+Invalid, 2869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 369 IncrementalHoareTripleChecker+Valid, 2500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:53,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 14225 Invalid, 2869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [369 Valid, 2500 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-02 20:11:53,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2022-11-02 20:11:53,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 601. [2022-11-02 20:11:53,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 406 states have (on average 1.564039408866995) internal successors, (635), 594 states have internal predecessors, (635), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2022-11-02 20:11:53,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 662 transitions. [2022-11-02 20:11:53,302 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 662 transitions. Word has length 88 [2022-11-02 20:11:53,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:53,302 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 662 transitions. [2022-11-02 20:11:53,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.22) internal successors, (111), 50 states have internal predecessors, (111), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 20:11:53,303 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 662 transitions. [2022-11-02 20:11:53,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-02 20:11:53,304 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:53,304 INFO L195 NwaCegarLoop]: trace histogram [44, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:11:53,326 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-11-02 20:11:53,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:11:53,521 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2022-11-02 20:11:53,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:53,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1476884034, now seen corresponding path program 5 times [2022-11-02 20:11:53,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:11:53,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1158195394] [2022-11-02 20:11:53,522 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 20:11:53,522 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:11:53,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:11:53,523 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:11:53,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 20:11:55,180 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2022-11-02 20:11:55,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:11:55,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 59 conjunts are in the unsatisfiable core [2022-11-02 20:11:55,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:11:55,290 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-02 20:11:55,290 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 12 treesize of output 22 [2022-11-02 20:11:55,806 INFO L356 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2022-11-02 20:11:55,806 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 45 [2022-11-02 20:11:55,893 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 13 treesize of output 9 [2022-11-02 20:11:56,112 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 24 [2022-11-02 20:11:56,733 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_11 (_ BitVec 32))) (and (not (= v_arrayElimCell_11 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| v_arrayElimCell_11))) (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)))) (exists ((v_ArrVal_1568 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1568) |c_#memory_$Pointer$.base|))) is different from true [2022-11-02 20:11:56,774 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_11 (_ BitVec 32))) (and (not (= v_arrayElimCell_11 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| v_arrayElimCell_11))) (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)))) (exists ((v_ArrVal_1569 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1569)))) is different from true [2022-11-02 20:11:57,069 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_11 (_ BitVec 32))) (and (not (= v_arrayElimCell_11 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| v_arrayElimCell_11))) (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)))) (exists ((v_ArrVal_1575 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1575)))) is different from true [2022-11-02 20:11:57,711 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_11 (_ BitVec 32))) (and (not (= v_arrayElimCell_11 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| v_arrayElimCell_11))) (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)))) (exists ((v_ArrVal_1588 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1588)))) is different from true [2022-11-02 20:11:57,905 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_11 (_ BitVec 32))) (and (not (= v_arrayElimCell_11 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| v_arrayElimCell_11))) (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)))) (exists ((v_ArrVal_1592 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1592) |c_#memory_$Pointer$.base|))) is different from true [2022-11-02 20:11:58,138 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_11 (_ BitVec 32))) (and (not (= v_arrayElimCell_11 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| v_arrayElimCell_11))) (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)))) (exists ((v_ArrVal_1597 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1597)))) is different from true [2022-11-02 20:11:58,429 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_11 (_ BitVec 32))) (and (not (= v_arrayElimCell_11 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| v_arrayElimCell_11))) (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)))) (exists ((v_ArrVal_1603 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1603)))) is different from true [2022-11-02 20:11:58,629 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 20:11:58,630 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 54 treesize of output 53 [2022-11-02 20:11:58,721 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 51 treesize of output 27 [2022-11-02 20:11:58,826 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 666 trivial. 287 not checked. [2022-11-02 20:11:58,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:11:59,201 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1651 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_1651) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)))) is different from false [2022-11-02 20:11:59,204 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:11:59,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1158195394] [2022-11-02 20:11:59,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1158195394] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:11:59,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1892385424] [2022-11-02 20:11:59,204 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 20:11:59,204 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-02 20:11:59,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/cvc4 [2022-11-02 20:11:59,207 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-02 20:11:59,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2022-11-02 20:13:07,557 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2022-11-02 20:13:07,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:13:07,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-02 20:13:07,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:07,812 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-02 20:13:07,813 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 20:13:08,112 INFO L356 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2022-11-02 20:13:08,112 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 43 [2022-11-02 20:13:08,184 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 13 treesize of output 9 [2022-11-02 20:13:08,414 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 34 treesize of output 16 [2022-11-02 20:13:12,686 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 20:13:12,687 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 46 treesize of output 45 [2022-11-02 20:13:12,833 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 43 treesize of output 19 [2022-11-02 20:13:12,927 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2022-11-02 20:13:12,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:13:13,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1892385424] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:13:13,382 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:13:13,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8] total 23 [2022-11-02 20:13:13,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640261730] [2022-11-02 20:13:13,383 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:13:13,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-02 20:13:13,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:13:13,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-02 20:13:13,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=339, Unknown=35, NotChecked=360, Total=812 [2022-11-02 20:13:13,385 INFO L87 Difference]: Start difference. First operand 601 states and 662 transitions. Second operand has 25 states, 22 states have (on average 6.590909090909091) internal successors, (145), 24 states have internal predecessors, (145), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:13:21,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:21,178 INFO L93 Difference]: Finished difference Result 1084 states and 1182 transitions. [2022-11-02 20:13:21,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 20:13:21,180 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 6.590909090909091) internal successors, (145), 24 states have internal predecessors, (145), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 110 [2022-11-02 20:13:21,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:21,183 INFO L225 Difference]: With dead ends: 1084 [2022-11-02 20:13:21,184 INFO L226 Difference]: Without dead ends: 1080 [2022-11-02 20:13:21,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 120 SyntacticMatches, 82 SemanticMatches, 39 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=195, Invalid=834, Unknown=59, NotChecked=552, Total=1640 [2022-11-02 20:13:21,185 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 550 mSDsluCounter, 3270 mSDsCounter, 0 mSdLazyCounter, 2764 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 3581 SdHoareTripleChecker+Invalid, 11409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 2764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8615 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:13:21,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [562 Valid, 3581 Invalid, 11409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 2764 Invalid, 0 Unknown, 8615 Unchecked, 6.8s Time] [2022-11-02 20:13:21,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2022-11-02 20:13:21,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 793. [2022-11-02 20:13:21,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 596 states have (on average 1.511744966442953) internal successors, (901), 783 states have internal predecessors, (901), 15 states have call successors, (15), 4 states have call predecessors, (15), 5 states have return successors, (16), 6 states have call predecessors, (16), 15 states have call successors, (16) [2022-11-02 20:13:21,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 932 transitions. [2022-11-02 20:13:21,205 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 932 transitions. Word has length 110 [2022-11-02 20:13:21,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:21,205 INFO L495 AbstractCegarLoop]: Abstraction has 793 states and 932 transitions. [2022-11-02 20:13:21,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 6.590909090909091) internal successors, (145), 24 states have internal predecessors, (145), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:13:21,206 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 932 transitions. [2022-11-02 20:13:21,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-02 20:13:21,207 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:21,207 INFO L195 NwaCegarLoop]: trace histogram [44, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:21,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-02 20:13:21,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2022-11-02 20:13:21,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt [2022-11-02 20:13:21,632 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2022-11-02 20:13:21,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:21,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1476884033, now seen corresponding path program 1 times [2022-11-02 20:13:21,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:13:21,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [237451909] [2022-11-02 20:13:21,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:21,634 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:13:21,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:13:21,635 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:13:21,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-02 20:13:22,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:22,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 110 conjunts are in the unsatisfiable core [2022-11-02 20:13:22,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:22,567 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 20:13:22,840 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-02 20:13:22,840 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 20:13:22,852 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2022-11-02 20:13:22,883 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 13 treesize of output 9 [2022-11-02 20:13:22,897 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 13 treesize of output 9 [2022-11-02 20:13:23,045 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 18 treesize of output 10 [2022-11-02 20:13:23,051 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 7 treesize of output 3 [2022-11-02 20:13:23,179 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2459 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2459) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_2458 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2458)))) is different from true [2022-11-02 20:13:23,245 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2463 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2463))) (exists ((v_ArrVal_2462 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2462) |c_#memory_$Pointer$.base|))) is different from true [2022-11-02 20:13:23,304 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2467 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2467))) (exists ((v_ArrVal_2466 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2466) |c_#memory_$Pointer$.base|))) is different from true [2022-11-02 20:13:23,402 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2472 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2472) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_2473 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2473)))) is different from true [2022-11-02 20:13:23,612 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2482 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2482) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_2483 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2483) |c_#memory_$Pointer$.base|))) is different from true [2022-11-02 20:13:23,669 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2486 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2486))) (exists ((v_ArrVal_2487 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2487) |c_#memory_$Pointer$.base|))) is different from true [2022-11-02 20:13:23,841 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2497 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2497) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2496 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2496)))) is different from true [2022-11-02 20:13:23,855 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2499 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2499))) (exists ((v_ArrVal_2498 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2498)))) is different from true [2022-11-02 20:13:23,868 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2500 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2500))) (exists ((v_ArrVal_2501 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2501) |c_#memory_$Pointer$.base|))) is different from true [2022-11-02 20:13:23,919 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2505 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2505) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2504 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2504) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-02 20:13:23,975 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2509 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2509) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_2508 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2508)))) is different from true [2022-11-02 20:13:23,989 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2511 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2511) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2510 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2510) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-02 20:13:24,004 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2513 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2513))) (exists ((v_ArrVal_2512 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2512)))) is different from true [2022-11-02 20:13:24,202 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2525 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2525))) (exists ((v_ArrVal_2524 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2524) |c_#memory_$Pointer$.base|))) is different from true [2022-11-02 20:13:24,215 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2526 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2526))) (exists ((v_ArrVal_2527 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2527)))) is different from true [2022-11-02 20:13:24,228 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2528 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2528) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2529 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2529) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-02 20:13:24,241 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2530 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2530) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2531 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2531)))) is different from true [2022-11-02 20:13:24,255 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2532 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2532) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2533 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2533) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-02 20:13:24,381 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2540 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2540) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2541 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2541) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-02 20:13:24,468 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 20:13:24,469 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 46 treesize of output 45 [2022-11-02 20:13:24,477 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 22 treesize of output 24 [2022-11-02 20:13:24,523 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 13 [2022-11-02 20:13:24,530 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 15 treesize of output 7 [2022-11-02 20:13:24,561 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 300 trivial. 665 not checked. [2022-11-02 20:13:24,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:13:25,620 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_2634 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2635 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2634) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2635) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_2634 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2634) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv16 32) .cse1) (bvadd .cse1 (_ bv20 32))))))) is different from false [2022-11-02 20:13:25,632 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:13:25,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [237451909] [2022-11-02 20:13:25,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [237451909] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:13:25,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [728237262] [2022-11-02 20:13:25,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:25,633 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-02 20:13:25,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/cvc4 [2022-11-02 20:13:25,639 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-02 20:13:25,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_375b57bd-ff07-4631-92d4-d7bad7d4c2e1/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process