./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_3-1.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_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/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_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/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_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/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 cac2372de612a50e6cea0e2672ab51101a6ffa3bb2603a06b5c5aa59090db116 --- 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 20:56:18,091 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:56:18,097 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:56:18,139 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:56:18,140 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:56:18,143 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:56:18,145 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:56:18,146 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:56:18,148 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:56:18,149 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:56:18,151 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:56:18,152 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:56:18,153 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:56:18,154 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:56:18,155 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:56:18,157 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:56:18,158 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:56:18,159 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:56:18,161 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:56:18,163 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:56:18,165 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:56:18,167 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:56:18,168 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:56:18,169 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:56:18,173 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:56:18,174 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:56:18,174 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:56:18,175 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:56:18,175 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:56:18,177 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:56:18,177 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:56:18,178 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:56:18,179 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:56:18,180 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:56:18,181 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:56:18,182 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:56:18,182 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:56:18,183 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:56:18,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:56:18,184 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:56:18,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:56:18,186 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-02 20:56:18,209 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:56:18,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:56:18,210 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:56:18,210 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:56:18,211 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:56:18,212 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:56:18,212 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:56:18,213 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:56:18,213 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:56:18,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:56:18,214 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:56:18,214 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:56:18,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:56:18,215 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:56:18,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:56:18,215 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-02 20:56:18,216 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-02 20:56:18,216 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-02 20:56:18,216 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:56:18,216 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 20:56:18,217 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:56:18,217 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:56:18,217 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:56:18,218 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:56:18,218 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:56:18,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:56:18,218 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:56:18,219 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:56:18,219 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:56:18,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:56:18,219 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_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cac2372de612a50e6cea0e2672ab51101a6ffa3bb2603a06b5c5aa59090db116 [2022-11-02 20:56:18,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:56:18,520 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:56:18,523 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:56:18,524 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:56:18,527 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:56:18,528 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_3-1.i [2022-11-02 20:56:18,613 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/data/5980831e0/8ec809fd4cd240b687ea1073965c10b8/FLAG9187c671d [2022-11-02 20:56:19,220 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:56:19,221 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/sv-benchmarks/c/ldv-memsafety/memleaks_test22_3-1.i [2022-11-02 20:56:19,258 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/data/5980831e0/8ec809fd4cd240b687ea1073965c10b8/FLAG9187c671d [2022-11-02 20:56:19,533 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/data/5980831e0/8ec809fd4cd240b687ea1073965c10b8 [2022-11-02 20:56:19,536 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:56:19,537 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:56:19,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:56:19,540 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:56:19,544 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:56:19,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:56:19" (1/1) ... [2022-11-02 20:56:19,546 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e0a0f18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:19, skipping insertion in model container [2022-11-02 20:56:19,546 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:56:19" (1/1) ... [2022-11-02 20:56:19,553 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:56:19,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:56:20,079 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:56:20,099 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 20:56:20,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2b516d4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:20, skipping insertion in model container [2022-11-02 20:56:20,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:56:20,101 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-02 20:56:20,103 INFO L158 Benchmark]: Toolchain (without parser) took 564.15ms. Allocated memory is still 94.4MB. Free memory was 56.8MB in the beginning and 65.9MB in the end (delta: -9.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 20:56:20,103 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 94.4MB. Free memory was 74.3MB in the beginning and 74.3MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:56:20,104 INFO L158 Benchmark]: CACSL2BoogieTranslator took 561.13ms. Allocated memory is still 94.4MB. Free memory was 56.6MB in the beginning and 65.9MB in the end (delta: -9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 20:56:20,107 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 94.4MB. Free memory was 74.3MB in the beginning and 74.3MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 561.13ms. Allocated memory is still 94.4MB. Free memory was 56.6MB in the beginning and 65.9MB in the end (delta: -9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: 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_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/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_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/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_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/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 cac2372de612a50e6cea0e2672ab51101a6ffa3bb2603a06b5c5aa59090db116 --- 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 20:56:22,471 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:56:22,475 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:56:22,524 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:56:22,525 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:56:22,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:56:22,532 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:56:22,540 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:56:22,546 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:56:22,552 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:56:22,553 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:56:22,556 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:56:22,557 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:56:22,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:56:22,562 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:56:22,564 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:56:22,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:56:22,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:56:22,569 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:56:22,597 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:56:22,599 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:56:22,601 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:56:22,603 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:56:22,606 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:56:22,614 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:56:22,615 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:56:22,615 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:56:22,617 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:56:22,618 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:56:22,619 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:56:22,619 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:56:22,620 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:56:22,622 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:56:22,623 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:56:22,625 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:56:22,625 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:56:22,626 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:56:22,626 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:56:22,627 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:56:22,629 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:56:22,629 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:56:22,635 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-02 20:56:22,676 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:56:22,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:56:22,677 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:56:22,678 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:56:22,678 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:56:22,679 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:56:22,680 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:56:22,680 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:56:22,681 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:56:22,681 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:56:22,682 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:56:22,682 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:56:22,682 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:56:22,683 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:56:22,683 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:56:22,683 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-02 20:56:22,683 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-02 20:56:22,684 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-02 20:56:22,684 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:56:22,684 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 20:56:22,684 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 20:56:22,684 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 20:56:22,684 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:56:22,685 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:56:22,685 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:56:22,685 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:56:22,685 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:56:22,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:56:22,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:56:22,686 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:56:22,686 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 20:56:22,686 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 20:56:22,687 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 20:56:22,687 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_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cac2372de612a50e6cea0e2672ab51101a6ffa3bb2603a06b5c5aa59090db116 [2022-11-02 20:56:23,114 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:56:23,139 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:56:23,143 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:56:23,144 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:56:23,145 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:56:23,147 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_3-1.i [2022-11-02 20:56:23,232 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/data/09ba54971/a3f8df248fbb4c438b51f9efe92bfc02/FLAG8255c6706 [2022-11-02 20:56:23,863 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:56:23,863 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/sv-benchmarks/c/ldv-memsafety/memleaks_test22_3-1.i [2022-11-02 20:56:23,883 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/data/09ba54971/a3f8df248fbb4c438b51f9efe92bfc02/FLAG8255c6706 [2022-11-02 20:56:24,107 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/data/09ba54971/a3f8df248fbb4c438b51f9efe92bfc02 [2022-11-02 20:56:24,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:56:24,114 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:56:24,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:56:24,116 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:56:24,120 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:56:24,121 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:56:24" (1/1) ... [2022-11-02 20:56:24,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c5230a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:24, skipping insertion in model container [2022-11-02 20:56:24,122 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:56:24" (1/1) ... [2022-11-02 20:56:24,130 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:56:24,169 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:56:24,607 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:56:24,626 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-02 20:56:24,635 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:56:24,678 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:56:24,685 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:56:24,733 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:56:24,770 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:56:24,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:24 WrapperNode [2022-11-02 20:56:24,771 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:56:24,772 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:56:24,773 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:56:24,773 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:56:24,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:24" (1/1) ... [2022-11-02 20:56:24,811 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:24" (1/1) ... [2022-11-02 20:56:24,838 INFO L138 Inliner]: procedures = 167, calls = 73, calls flagged for inlining = 25, calls inlined = 19, statements flattened = 124 [2022-11-02 20:56:24,839 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:56:24,840 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:56:24,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:56:24,840 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:56:24,850 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:24" (1/1) ... [2022-11-02 20:56:24,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:24" (1/1) ... [2022-11-02 20:56:24,854 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:24" (1/1) ... [2022-11-02 20:56:24,855 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:24" (1/1) ... [2022-11-02 20:56:24,866 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:24" (1/1) ... [2022-11-02 20:56:24,869 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:24" (1/1) ... [2022-11-02 20:56:24,872 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:24" (1/1) ... [2022-11-02 20:56:24,874 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:24" (1/1) ... [2022-11-02 20:56:24,878 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:56:24,879 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:56:24,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:56:24,879 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:56:24,880 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:24" (1/1) ... [2022-11-02 20:56:24,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:56:24,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:24,912 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:56:24,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:56:24,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-02 20:56:24,961 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2022-11-02 20:56:24,961 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2022-11-02 20:56:24,961 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-02 20:56:24,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-02 20:56:24,962 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2022-11-02 20:56:24,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2022-11-02 20:56:24,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:56:24,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:56:24,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:56:24,963 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:56:24,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-02 20:56:24,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:56:24,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-02 20:56:24,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:56:24,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:56:25,121 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:56:25,123 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:56:25,787 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:56:25,795 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:56:25,795 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 20:56:25,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:56:25 BoogieIcfgContainer [2022-11-02 20:56:25,798 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:56:25,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:56:25,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:56:25,805 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:56:25,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:56:24" (1/3) ... [2022-11-02 20:56:25,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eaec281 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:56:25, skipping insertion in model container [2022-11-02 20:56:25,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:24" (2/3) ... [2022-11-02 20:56:25,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eaec281 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:56:25, skipping insertion in model container [2022-11-02 20:56:25,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:56:25" (3/3) ... [2022-11-02 20:56:25,808 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test22_3-1.i [2022-11-02 20:56:25,829 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:56:25,830 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations. [2022-11-02 20:56:25,889 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:56:25,899 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;@5f735511, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:56:25,899 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-02 20:56:25,905 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 59 states have (on average 1.576271186440678) internal successors, (93), 85 states have internal predecessors, (93), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-02 20:56:25,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-02 20:56:25,913 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:25,914 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:25,915 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-02 20:56:25,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:25,921 INFO L85 PathProgramCache]: Analyzing trace with hash 886333963, now seen corresponding path program 1 times [2022-11-02 20:56:25,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:25,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1240776408] [2022-11-02 20:56:25,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:25,935 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:25,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:25,942 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:25,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 20:56:26,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:26,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:56:26,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:26,161 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 20:56:26,216 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 20:56:26,217 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:26,218 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:26,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1240776408] [2022-11-02 20:56:26,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1240776408] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:26,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:26,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:56:26,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582471706] [2022-11-02 20:56:26,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:26,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:56:26,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:26,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:56:26,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:56:26,269 INFO L87 Difference]: Start difference. First operand has 92 states, 59 states have (on average 1.576271186440678) internal successors, (93), 85 states have internal predecessors, (93), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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 20:56:26,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:26,753 INFO L93 Difference]: Finished difference Result 158 states and 178 transitions. [2022-11-02 20:56:26,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:56:26,755 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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 10 [2022-11-02 20:56:26,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:26,768 INFO L225 Difference]: With dead ends: 158 [2022-11-02 20:56:26,769 INFO L226 Difference]: Without dead ends: 156 [2022-11-02 20:56:26,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:56:26,777 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 97 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:26,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 387 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:56:26,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-11-02 20:56:26,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 95. [2022-11-02 20:56:26,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 62 states have (on average 1.5483870967741935) internal successors, (96), 87 states have internal predecessors, (96), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-02 20:56:26,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 105 transitions. [2022-11-02 20:56:26,829 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 105 transitions. Word has length 10 [2022-11-02 20:56:26,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:26,830 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 105 transitions. [2022-11-02 20:56:26,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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 20:56:26,831 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 105 transitions. [2022-11-02 20:56:26,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-02 20:56:26,831 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:26,832 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:26,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:27,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:56:27,044 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-02 20:56:27,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:27,045 INFO L85 PathProgramCache]: Analyzing trace with hash 914963114, now seen corresponding path program 1 times [2022-11-02 20:56:27,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:27,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [649724205] [2022-11-02 20:56:27,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:27,046 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:27,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:27,047 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:27,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 20:56:27,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:27,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:56:27,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:27,215 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 20:56:27,221 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:27,222 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:27,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [649724205] [2022-11-02 20:56:27,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [649724205] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:27,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:27,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:56:27,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848552736] [2022-11-02 20:56:27,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:27,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:56:27,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:27,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:56:27,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:56:27,226 INFO L87 Difference]: Start difference. First operand 95 states and 105 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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 20:56:27,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:27,286 INFO L93 Difference]: Finished difference Result 114 states and 125 transitions. [2022-11-02 20:56:27,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:56:27,288 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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 10 [2022-11-02 20:56:27,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:27,291 INFO L225 Difference]: With dead ends: 114 [2022-11-02 20:56:27,295 INFO L226 Difference]: Without dead ends: 114 [2022-11-02 20:56:27,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:56:27,297 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 19 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:27,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 393 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:56:27,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-11-02 20:56:27,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 93. [2022-11-02 20:56:27,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 61 states have (on average 1.5245901639344261) internal successors, (93), 85 states have internal predecessors, (93), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-02 20:56:27,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 102 transitions. [2022-11-02 20:56:27,320 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 102 transitions. Word has length 10 [2022-11-02 20:56:27,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:27,321 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 102 transitions. [2022-11-02 20:56:27,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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 20:56:27,322 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 102 transitions. [2022-11-02 20:56:27,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:56:27,323 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:27,323 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:27,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:27,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:56:27,534 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-02 20:56:27,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:27,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1706549126, now seen corresponding path program 1 times [2022-11-02 20:56:27,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:27,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1583260482] [2022-11-02 20:56:27,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:27,544 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:27,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:27,546 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:27,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 20:56:27,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:27,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-02 20:56:27,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:27,674 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 20:56:27,793 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 20:56:27,794 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:27,794 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:27,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1583260482] [2022-11-02 20:56:27,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1583260482] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:27,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:27,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:56:27,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908353466] [2022-11-02 20:56:27,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:27,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:56:27,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:27,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:56:27,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:56:27,797 INFO L87 Difference]: Start difference. First operand 93 states and 102 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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 20:56:28,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:28,370 INFO L93 Difference]: Finished difference Result 134 states and 147 transitions. [2022-11-02 20:56:28,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:56:28,374 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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 11 [2022-11-02 20:56:28,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:28,375 INFO L225 Difference]: With dead ends: 134 [2022-11-02 20:56:28,376 INFO L226 Difference]: Without dead ends: 134 [2022-11-02 20:56:28,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:56:28,378 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 73 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:28,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 469 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:56:28,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-11-02 20:56:28,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 92. [2022-11-02 20:56:28,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 61 states have (on average 1.5081967213114753) internal successors, (92), 84 states have internal predecessors, (92), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-02 20:56:28,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2022-11-02 20:56:28,405 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 11 [2022-11-02 20:56:28,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:28,405 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2022-11-02 20:56:28,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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 20:56:28,406 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2022-11-02 20:56:28,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 20:56:28,408 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:28,409 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:28,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:28,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:56:28,622 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-02 20:56:28,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:28,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1363388625, now seen corresponding path program 1 times [2022-11-02 20:56:28,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:28,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1744848104] [2022-11-02 20:56:28,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:28,624 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:28,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:28,626 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:28,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 20:56:28,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:28,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:56:28,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:28,757 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 20:56:28,758 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:28,758 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:28,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1744848104] [2022-11-02 20:56:28,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1744848104] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:28,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:28,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:56:28,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624251644] [2022-11-02 20:56:28,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:28,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:56:28,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:28,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:56:28,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:56:28,764 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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 20:56:28,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:28,799 INFO L93 Difference]: Finished difference Result 113 states and 123 transitions. [2022-11-02 20:56:28,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:56:28,799 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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 12 [2022-11-02 20:56:28,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:28,801 INFO L225 Difference]: With dead ends: 113 [2022-11-02 20:56:28,801 INFO L226 Difference]: Without dead ends: 113 [2022-11-02 20:56:28,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:56:28,803 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 35 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:28,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 423 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:56:28,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-11-02 20:56:28,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 92. [2022-11-02 20:56:28,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 61 states have (on average 1.4918032786885247) internal successors, (91), 84 states have internal predecessors, (91), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-02 20:56:28,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 100 transitions. [2022-11-02 20:56:28,812 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 100 transitions. Word has length 12 [2022-11-02 20:56:28,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:28,813 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 100 transitions. [2022-11-02 20:56:28,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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 20:56:28,813 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 100 transitions. [2022-11-02 20:56:28,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 20:56:28,814 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:28,814 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:28,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:29,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:56:29,027 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-02 20:56:29,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:29,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1188768336, now seen corresponding path program 1 times [2022-11-02 20:56:29,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:29,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1051390126] [2022-11-02 20:56:29,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:29,028 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:29,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:29,030 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:29,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 20:56:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:29,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-02 20:56:29,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:29,156 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 20:56:29,157 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:29,157 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:29,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1051390126] [2022-11-02 20:56:29,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1051390126] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:29,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:29,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:56:29,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392317403] [2022-11-02 20:56:29,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:29,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:56:29,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:29,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:56:29,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:56:29,160 INFO L87 Difference]: Start difference. First operand 92 states and 100 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 20:56:29,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:29,223 INFO L93 Difference]: Finished difference Result 112 states and 122 transitions. [2022-11-02 20:56:29,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:56:29,224 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 12 [2022-11-02 20:56:29,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:29,227 INFO L225 Difference]: With dead ends: 112 [2022-11-02 20:56:29,229 INFO L226 Difference]: Without dead ends: 112 [2022-11-02 20:56:29,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 20:56:29,231 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 21 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:29,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 288 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:56:29,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-11-02 20:56:29,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 94. [2022-11-02 20:56:29,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 63 states have (on average 1.4761904761904763) internal successors, (93), 86 states have internal predecessors, (93), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-02 20:56:29,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 102 transitions. [2022-11-02 20:56:29,257 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 102 transitions. Word has length 12 [2022-11-02 20:56:29,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:29,257 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 102 transitions. [2022-11-02 20:56:29,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 20:56:29,258 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 102 transitions. [2022-11-02 20:56:29,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 20:56:29,258 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:29,259 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:29,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:29,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:56:29,471 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-02 20:56:29,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:29,472 INFO L85 PathProgramCache]: Analyzing trace with hash 86428473, now seen corresponding path program 1 times [2022-11-02 20:56:29,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:29,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [411624703] [2022-11-02 20:56:29,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:29,473 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:29,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:29,474 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:29,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 20:56:29,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:29,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:56:29,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:29,593 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 20:56:29,594 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:29,594 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:29,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [411624703] [2022-11-02 20:56:29,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [411624703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:29,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:29,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:56:29,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946635430] [2022-11-02 20:56:29,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:29,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:56:29,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:29,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:56:29,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:56:29,597 INFO L87 Difference]: Start difference. First operand 94 states and 102 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 20:56:29,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:29,644 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2022-11-02 20:56:29,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:56:29,644 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 16 [2022-11-02 20:56:29,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:29,646 INFO L225 Difference]: With dead ends: 104 [2022-11-02 20:56:29,646 INFO L226 Difference]: Without dead ends: 104 [2022-11-02 20:56:29,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 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 20:56:29,647 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 33 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:29,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 208 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:56:29,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-11-02 20:56:29,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 95. [2022-11-02 20:56:29,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 64 states have (on average 1.46875) internal successors, (94), 87 states have internal predecessors, (94), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-02 20:56:29,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 103 transitions. [2022-11-02 20:56:29,666 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 103 transitions. Word has length 16 [2022-11-02 20:56:29,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:29,667 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 103 transitions. [2022-11-02 20:56:29,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 20:56:29,667 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 103 transitions. [2022-11-02 20:56:29,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 20:56:29,672 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:29,672 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:29,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:29,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:56:29,885 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-02 20:56:29,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:29,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1674943760, now seen corresponding path program 1 times [2022-11-02 20:56:29,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:29,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1039969575] [2022-11-02 20:56:29,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:29,886 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:29,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:29,887 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:29,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 20:56:29,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:29,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:56:29,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:30,036 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 20:56:30,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:56:30,096 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 20:56:30,097 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:30,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1039969575] [2022-11-02 20:56:30,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1039969575] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:56:30,097 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:56:30,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-02 20:56:30,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662647905] [2022-11-02 20:56:30,098 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:56:30,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:56:30,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:30,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:56:30,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:56:30,100 INFO L87 Difference]: Start difference. First operand 95 states and 103 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:56:30,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:30,199 INFO L93 Difference]: Finished difference Result 107 states and 116 transitions. [2022-11-02 20:56:30,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:56:30,200 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-02 20:56:30,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:30,201 INFO L225 Difference]: With dead ends: 107 [2022-11-02 20:56:30,201 INFO L226 Difference]: Without dead ends: 107 [2022-11-02 20:56:30,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:56:30,202 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 66 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:30,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 381 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:56:30,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-11-02 20:56:30,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 98. [2022-11-02 20:56:30,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 67 states have (on average 1.4477611940298507) internal successors, (97), 90 states have internal predecessors, (97), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-02 20:56:30,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 106 transitions. [2022-11-02 20:56:30,229 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 106 transitions. Word has length 17 [2022-11-02 20:56:30,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:30,230 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 106 transitions. [2022-11-02 20:56:30,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:56:30,230 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 106 transitions. [2022-11-02 20:56:30,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-02 20:56:30,231 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:30,231 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:30,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:30,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:56:30,443 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_kobject_putErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-02 20:56:30,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:30,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1276371002, now seen corresponding path program 1 times [2022-11-02 20:56:30,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:30,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1625032453] [2022-11-02 20:56:30,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:30,445 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:30,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:30,448 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:30,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 20:56:30,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:30,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-02 20:56:30,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:30,694 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 20:56:30,694 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:30,694 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:30,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1625032453] [2022-11-02 20:56:30,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1625032453] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:30,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:30,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:56:30,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506594521] [2022-11-02 20:56:30,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:30,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:56:30,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:30,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:56:30,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:56:30,697 INFO L87 Difference]: Start difference. First operand 98 states and 106 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:56:30,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:30,812 INFO L93 Difference]: Finished difference Result 113 states and 122 transitions. [2022-11-02 20:56:30,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:56:30,813 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-11-02 20:56:30,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:30,814 INFO L225 Difference]: With dead ends: 113 [2022-11-02 20:56:30,815 INFO L226 Difference]: Without dead ends: 113 [2022-11-02 20:56:30,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:56:30,816 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 21 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:30,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 545 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:56:30,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-11-02 20:56:30,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 108. [2022-11-02 20:56:30,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 74 states have (on average 1.4054054054054055) internal successors, (104), 98 states have internal predecessors, (104), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-11-02 20:56:30,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 117 transitions. [2022-11-02 20:56:30,823 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 117 transitions. Word has length 18 [2022-11-02 20:56:30,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:30,824 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 117 transitions. [2022-11-02 20:56:30,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:56:30,824 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 117 transitions. [2022-11-02 20:56:30,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-02 20:56:30,825 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:30,825 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:30,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:31,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:56:31,038 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-02 20:56:31,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:31,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1965719801, now seen corresponding path program 2 times [2022-11-02 20:56:31,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:31,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [400862934] [2022-11-02 20:56:31,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:56:31,039 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:31,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:31,040 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:31,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 20:56:31,139 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:56:31,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:56:31,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:56:31,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:31,159 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 20:56:31,276 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 20:56:31,276 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:31,276 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:31,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [400862934] [2022-11-02 20:56:31,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [400862934] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:31,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:31,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:56:31,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064288436] [2022-11-02 20:56:31,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:31,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:56:31,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:31,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:56:31,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:56:31,280 INFO L87 Difference]: Start difference. First operand 108 states and 117 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:56:31,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:31,802 INFO L93 Difference]: Finished difference Result 142 states and 155 transitions. [2022-11-02 20:56:31,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:56:31,803 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-11-02 20:56:31,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:31,804 INFO L225 Difference]: With dead ends: 142 [2022-11-02 20:56:31,804 INFO L226 Difference]: Without dead ends: 142 [2022-11-02 20:56:31,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:56:31,806 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 95 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:31,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 537 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:56:31,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-11-02 20:56:31,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 107. [2022-11-02 20:56:31,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 74 states have (on average 1.3918918918918919) internal successors, (103), 97 states have internal predecessors, (103), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-11-02 20:56:31,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 116 transitions. [2022-11-02 20:56:31,813 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 116 transitions. Word has length 20 [2022-11-02 20:56:31,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:31,813 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 116 transitions. [2022-11-02 20:56:31,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:56:31,814 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 116 transitions. [2022-11-02 20:56:31,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-02 20:56:31,815 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:31,815 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:31,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:32,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:56:32,031 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-02 20:56:32,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:32,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1965719802, now seen corresponding path program 1 times [2022-11-02 20:56:32,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:32,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [624335642] [2022-11-02 20:56:32,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:32,033 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:32,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:32,034 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:32,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 20:56:32,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:32,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:56:32,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:32,306 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 20:56:32,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:56:32,534 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 20:56:32,534 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:32,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [624335642] [2022-11-02 20:56:32,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [624335642] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:56:32,535 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:56:32,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-02 20:56:32,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635879507] [2022-11-02 20:56:32,535 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:56:32,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:56:32,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:32,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:56:32,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:56:32,537 INFO L87 Difference]: Start difference. First operand 107 states and 116 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:56:32,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:32,897 INFO L93 Difference]: Finished difference Result 116 states and 124 transitions. [2022-11-02 20:56:32,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:56:32,898 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-11-02 20:56:32,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:32,899 INFO L225 Difference]: With dead ends: 116 [2022-11-02 20:56:32,899 INFO L226 Difference]: Without dead ends: 116 [2022-11-02 20:56:32,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=131, Invalid=211, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:56:32,900 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 64 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:32,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 782 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:56:32,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-02 20:56:32,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 113. [2022-11-02 20:56:32,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 80 states have (on average 1.3625) internal successors, (109), 103 states have internal predecessors, (109), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-11-02 20:56:32,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 122 transitions. [2022-11-02 20:56:32,906 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 122 transitions. Word has length 20 [2022-11-02 20:56:32,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:32,907 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 122 transitions. [2022-11-02 20:56:32,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:56:32,907 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 122 transitions. [2022-11-02 20:56:32,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-02 20:56:32,908 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:32,908 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:32,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:33,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:56:33,121 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-02 20:56:33,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:33,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1184735654, now seen corresponding path program 1 times [2022-11-02 20:56:33,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:33,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [824754437] [2022-11-02 20:56:33,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:33,122 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:33,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:33,123 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:33,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 20:56:33,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:33,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:56:33,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:33,292 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 20:56:33,292 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:33,292 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:33,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [824754437] [2022-11-02 20:56:33,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [824754437] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:33,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:33,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:56:33,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938797492] [2022-11-02 20:56:33,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:33,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:56:33,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:33,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:56:33,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:56:33,294 INFO L87 Difference]: Start difference. First operand 113 states and 122 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 20:56:33,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:33,494 INFO L93 Difference]: Finished difference Result 119 states and 128 transitions. [2022-11-02 20:56:33,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:56:33,494 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2022-11-02 20:56:33,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:33,495 INFO L225 Difference]: With dead ends: 119 [2022-11-02 20:56:33,496 INFO L226 Difference]: Without dead ends: 101 [2022-11-02 20:56:33,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:56:33,497 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 31 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:33,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 188 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:56:33,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-11-02 20:56:33,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 97. [2022-11-02 20:56:33,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 68 states have (on average 1.411764705882353) internal successors, (96), 90 states have internal predecessors, (96), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-02 20:56:33,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 104 transitions. [2022-11-02 20:56:33,502 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 104 transitions. Word has length 27 [2022-11-02 20:56:33,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:33,502 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 104 transitions. [2022-11-02 20:56:33,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 20:56:33,503 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 104 transitions. [2022-11-02 20:56:33,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-02 20:56:33,503 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:33,503 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:33,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:33,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:56:33,715 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-02 20:56:33,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:33,715 INFO L85 PathProgramCache]: Analyzing trace with hash -103060070, now seen corresponding path program 2 times [2022-11-02 20:56:33,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:33,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1198567327] [2022-11-02 20:56:33,716 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:56:33,716 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:33,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:33,717 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:33,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 20:56:33,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:56:33,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:56:33,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-02 20:56:33,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:33,851 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 20:56:34,101 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-02 20:56:34,102 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:34,102 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:34,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1198567327] [2022-11-02 20:56:34,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1198567327] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:34,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:34,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:56:34,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800570470] [2022-11-02 20:56:34,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:34,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:56:34,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:34,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:56:34,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:56:34,104 INFO L87 Difference]: Start difference. First operand 97 states and 104 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:56:34,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:34,845 INFO L93 Difference]: Finished difference Result 141 states and 152 transitions. [2022-11-02 20:56:34,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:56:34,846 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2022-11-02 20:56:34,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:34,847 INFO L225 Difference]: With dead ends: 141 [2022-11-02 20:56:34,847 INFO L226 Difference]: Without dead ends: 141 [2022-11-02 20:56:34,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:56:34,848 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 105 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:34,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 620 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:56:34,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-11-02 20:56:34,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 96. [2022-11-02 20:56:34,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 68 states have (on average 1.3970588235294117) internal successors, (95), 89 states have internal predecessors, (95), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-02 20:56:34,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 103 transitions. [2022-11-02 20:56:34,853 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 103 transitions. Word has length 26 [2022-11-02 20:56:34,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:34,854 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 103 transitions. [2022-11-02 20:56:34,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:56:34,858 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 103 transitions. [2022-11-02 20:56:34,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-02 20:56:34,864 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:34,864 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:34,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:35,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:56:35,084 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-02 20:56:35,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:35,085 INFO L85 PathProgramCache]: Analyzing trace with hash -257987495, now seen corresponding path program 1 times [2022-11-02 20:56:35,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:35,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [997646790] [2022-11-02 20:56:35,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:35,086 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:35,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:35,087 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:35,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 20:56:35,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:35,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-02 20:56:35,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:35,543 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 20:56:35,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:56:36,198 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 20:56:36,199 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:36,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [997646790] [2022-11-02 20:56:36,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [997646790] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:56:36,199 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:56:36,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-11-02 20:56:36,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322678555] [2022-11-02 20:56:36,200 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:56:36,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-02 20:56:36,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:36,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-02 20:56:36,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2022-11-02 20:56:36,201 INFO L87 Difference]: Start difference. First operand 96 states and 103 transitions. Second operand has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 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 20:56:36,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:36,897 INFO L93 Difference]: Finished difference Result 102 states and 109 transitions. [2022-11-02 20:56:36,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:56:36,898 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 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 28 [2022-11-02 20:56:36,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:36,899 INFO L225 Difference]: With dead ends: 102 [2022-11-02 20:56:36,899 INFO L226 Difference]: Without dead ends: 102 [2022-11-02 20:56:36,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=278, Invalid=652, Unknown=0, NotChecked=0, Total=930 [2022-11-02 20:56:36,901 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 31 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1236 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:36,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 1236 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:56:36,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-02 20:56:36,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2022-11-02 20:56:36,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 74 states have (on average 1.364864864864865) internal successors, (101), 95 states have internal predecessors, (101), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-02 20:56:36,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 109 transitions. [2022-11-02 20:56:36,906 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 109 transitions. Word has length 28 [2022-11-02 20:56:36,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:36,906 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 109 transitions. [2022-11-02 20:56:36,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 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 20:56:36,907 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 109 transitions. [2022-11-02 20:56:36,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-02 20:56:36,908 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:36,908 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:36,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:37,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:56:37,114 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-02 20:56:37,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:37,115 INFO L85 PathProgramCache]: Analyzing trace with hash -2039891719, now seen corresponding path program 2 times [2022-11-02 20:56:37,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:37,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1500348955] [2022-11-02 20:56:37,116 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:56:37,116 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:37,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:37,117 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:37,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 20:56:37,252 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:56:37,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:56:37,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:56:37,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:37,345 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-02 20:56:37,345 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:37,345 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:37,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1500348955] [2022-11-02 20:56:37,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1500348955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:37,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:37,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:56:37,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526045615] [2022-11-02 20:56:37,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:37,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:56:37,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:37,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:56:37,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:56:37,349 INFO L87 Difference]: Start difference. First operand 102 states and 109 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:56:37,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:37,403 INFO L93 Difference]: Finished difference Result 102 states and 108 transitions. [2022-11-02 20:56:37,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:56:37,404 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2022-11-02 20:56:37,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:37,405 INFO L225 Difference]: With dead ends: 102 [2022-11-02 20:56:37,405 INFO L226 Difference]: Without dead ends: 102 [2022-11-02 20:56:37,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:56:37,406 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 53 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:37,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 371 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:56:37,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-02 20:56:37,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2022-11-02 20:56:37,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 74 states have (on average 1.3513513513513513) internal successors, (100), 95 states have internal predecessors, (100), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-02 20:56:37,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 108 transitions. [2022-11-02 20:56:37,413 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 108 transitions. Word has length 34 [2022-11-02 20:56:37,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:37,413 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 108 transitions. [2022-11-02 20:56:37,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:56:37,413 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 108 transitions. [2022-11-02 20:56:37,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-02 20:56:37,417 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:37,417 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:37,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:37,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:56:37,641 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-02 20:56:37,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:37,641 INFO L85 PathProgramCache]: Analyzing trace with hash -382086172, now seen corresponding path program 1 times [2022-11-02 20:56:37,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:37,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1824131211] [2022-11-02 20:56:37,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:37,642 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:37,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:37,644 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:37,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 20:56:37,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:37,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:56:37,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:37,915 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 20:56:38,064 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-02 20:56:38,064 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:38,064 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:38,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1824131211] [2022-11-02 20:56:38,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1824131211] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:38,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:38,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:56:38,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88660658] [2022-11-02 20:56:38,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:38,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:56:38,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:38,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:56:38,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:56:38,067 INFO L87 Difference]: Start difference. First operand 102 states and 108 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:56:38,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:38,475 INFO L93 Difference]: Finished difference Result 100 states and 106 transitions. [2022-11-02 20:56:38,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:56:38,476 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2022-11-02 20:56:38,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:38,476 INFO L225 Difference]: With dead ends: 100 [2022-11-02 20:56:38,476 INFO L226 Difference]: Without dead ends: 100 [2022-11-02 20:56:38,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:56:38,477 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 77 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:38,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 391 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:56:38,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-02 20:56:38,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2022-11-02 20:56:38,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 74 states have (on average 1.3243243243243243) internal successors, (98), 93 states have internal predecessors, (98), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-02 20:56:38,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 106 transitions. [2022-11-02 20:56:38,481 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 106 transitions. Word has length 36 [2022-11-02 20:56:38,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:38,481 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 106 transitions. [2022-11-02 20:56:38,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:56:38,482 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 106 transitions. [2022-11-02 20:56:38,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-02 20:56:38,484 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:38,484 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:38,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:38,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:56:38,685 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-02 20:56:38,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:38,685 INFO L85 PathProgramCache]: Analyzing trace with hash -382086171, now seen corresponding path program 1 times [2022-11-02 20:56:38,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:38,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1774250263] [2022-11-02 20:56:38,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:38,686 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:38,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:38,694 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:38,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 20:56:38,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:38,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-02 20:56:38,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:38,957 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 20:56:39,261 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-02 20:56:39,261 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:39,261 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:39,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1774250263] [2022-11-02 20:56:39,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1774250263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:39,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:39,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:56:39,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281207908] [2022-11-02 20:56:39,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:39,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:56:39,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:39,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:56:39,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:56:39,263 INFO L87 Difference]: Start difference. First operand 100 states and 106 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:56:39,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:39,768 INFO L93 Difference]: Finished difference Result 98 states and 104 transitions. [2022-11-02 20:56:39,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:56:39,769 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2022-11-02 20:56:39,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:39,770 INFO L225 Difference]: With dead ends: 98 [2022-11-02 20:56:39,770 INFO L226 Difference]: Without dead ends: 98 [2022-11-02 20:56:39,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:56:39,771 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 84 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:39,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 472 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:56:39,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-02 20:56:39,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-11-02 20:56:39,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 74 states have (on average 1.2972972972972974) internal successors, (96), 91 states have internal predecessors, (96), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-02 20:56:39,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 104 transitions. [2022-11-02 20:56:39,775 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 104 transitions. Word has length 36 [2022-11-02 20:56:39,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:39,775 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 104 transitions. [2022-11-02 20:56:39,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:56:39,775 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 104 transitions. [2022-11-02 20:56:39,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-02 20:56:39,776 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:39,776 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:39,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:39,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:56:39,977 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-02 20:56:39,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:39,977 INFO L85 PathProgramCache]: Analyzing trace with hash -432796251, now seen corresponding path program 1 times [2022-11-02 20:56:39,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:39,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [802080392] [2022-11-02 20:56:39,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:39,977 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:39,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:39,979 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:39,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 20:56:40,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:40,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:56:40,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:40,302 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-02 20:56:40,302 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:40,302 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:40,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [802080392] [2022-11-02 20:56:40,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [802080392] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:40,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:40,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:56:40,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138758923] [2022-11-02 20:56:40,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:40,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:56:40,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:40,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:56:40,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:56:40,304 INFO L87 Difference]: Start difference. First operand 98 states and 104 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:56:40,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:40,375 INFO L93 Difference]: Finished difference Result 98 states and 103 transitions. [2022-11-02 20:56:40,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:56:40,376 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2022-11-02 20:56:40,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:40,376 INFO L225 Difference]: With dead ends: 98 [2022-11-02 20:56:40,376 INFO L226 Difference]: Without dead ends: 98 [2022-11-02 20:56:40,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:56:40,377 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 75 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:40,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 396 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:56:40,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-02 20:56:40,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-11-02 20:56:40,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 74 states have (on average 1.2837837837837838) internal successors, (95), 90 states have internal predecessors, (95), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-02 20:56:40,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 103 transitions. [2022-11-02 20:56:40,381 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 103 transitions. Word has length 36 [2022-11-02 20:56:40,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:40,381 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 103 transitions. [2022-11-02 20:56:40,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:56:40,382 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 103 transitions. [2022-11-02 20:56:40,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-02 20:56:40,386 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:40,386 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 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 20:56:40,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:40,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:56:40,600 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-02 20:56:40,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:40,600 INFO L85 PathProgramCache]: Analyzing trace with hash 74876930, now seen corresponding path program 1 times [2022-11-02 20:56:40,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:40,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [158678709] [2022-11-02 20:56:40,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:40,601 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:40,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:40,602 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:40,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 20:56:40,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:40,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 20:56:40,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:40,867 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-02 20:56:41,094 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-02 20:56:41,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:41,094 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:41,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [158678709] [2022-11-02 20:56:41,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [158678709] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:41,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:41,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:56:41,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161121067] [2022-11-02 20:56:41,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:41,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:56:41,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:41,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:56:41,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:56:41,099 INFO L87 Difference]: Start difference. First operand 98 states and 103 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 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 20:56:41,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:41,454 INFO L93 Difference]: Finished difference Result 100 states and 106 transitions. [2022-11-02 20:56:41,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:56:41,454 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 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 44 [2022-11-02 20:56:41,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:41,455 INFO L225 Difference]: With dead ends: 100 [2022-11-02 20:56:41,455 INFO L226 Difference]: Without dead ends: 100 [2022-11-02 20:56:41,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:56:41,456 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 65 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:41,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 347 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 164 Invalid, 0 Unknown, 20 Unchecked, 0.3s Time] [2022-11-02 20:56:41,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-02 20:56:41,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 96. [2022-11-02 20:56:41,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 74 states have (on average 1.2567567567567568) internal successors, (93), 88 states have internal predecessors, (93), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-02 20:56:41,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 101 transitions. [2022-11-02 20:56:41,462 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 101 transitions. Word has length 44 [2022-11-02 20:56:41,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:41,462 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 101 transitions. [2022-11-02 20:56:41,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 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 20:56:41,465 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 101 transitions. [2022-11-02 20:56:41,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-02 20:56:41,467 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:41,468 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 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 20:56:41,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:41,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:56:41,682 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-02 20:56:41,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:41,683 INFO L85 PathProgramCache]: Analyzing trace with hash 74876931, now seen corresponding path program 1 times [2022-11-02 20:56:41,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:41,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1917878090] [2022-11-02 20:56:41,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:41,683 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:41,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:41,684 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:41,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 20:56:41,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:41,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-02 20:56:41,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:41,983 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 20:56:42,303 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-02 20:56:42,303 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:42,303 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:42,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1917878090] [2022-11-02 20:56:42,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1917878090] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:42,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:42,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:56:42,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926864373] [2022-11-02 20:56:42,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:42,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:56:42,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:42,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:56:42,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:56:42,305 INFO L87 Difference]: Start difference. First operand 96 states and 101 transitions. Second operand has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 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 20:56:42,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:42,755 INFO L93 Difference]: Finished difference Result 103 states and 109 transitions. [2022-11-02 20:56:42,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:56:42,756 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 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 44 [2022-11-02 20:56:42,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:42,757 INFO L225 Difference]: With dead ends: 103 [2022-11-02 20:56:42,757 INFO L226 Difference]: Without dead ends: 103 [2022-11-02 20:56:42,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:56:42,758 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 70 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:42,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 473 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 173 Invalid, 0 Unknown, 17 Unchecked, 0.3s Time] [2022-11-02 20:56:42,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-11-02 20:56:42,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 94. [2022-11-02 20:56:42,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 74 states have (on average 1.2297297297297298) internal successors, (91), 86 states have internal predecessors, (91), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-02 20:56:42,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 99 transitions. [2022-11-02 20:56:42,762 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 99 transitions. Word has length 44 [2022-11-02 20:56:42,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:42,763 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 99 transitions. [2022-11-02 20:56:42,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 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 20:56:42,763 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 99 transitions. [2022-11-02 20:56:42,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-02 20:56:42,764 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:42,764 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:56:42,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:42,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:56:42,983 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_kobject_putErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-02 20:56:42,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:42,984 INFO L85 PathProgramCache]: Analyzing trace with hash 496438540, now seen corresponding path program 1 times [2022-11-02 20:56:42,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:42,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1571129508] [2022-11-02 20:56:42,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:42,985 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:42,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:42,986 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:42,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-02 20:56:43,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:43,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:56:43,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:43,367 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-02 20:56:43,367 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:43,367 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:43,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1571129508] [2022-11-02 20:56:43,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1571129508] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:43,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:43,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:56:43,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564861487] [2022-11-02 20:56:43,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:43,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:56:43,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:43,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:56:43,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:56:43,369 INFO L87 Difference]: Start difference. First operand 94 states and 99 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:56:43,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:43,448 INFO L93 Difference]: Finished difference Result 94 states and 98 transitions. [2022-11-02 20:56:43,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:56:43,448 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 50 [2022-11-02 20:56:43,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:43,449 INFO L225 Difference]: With dead ends: 94 [2022-11-02 20:56:43,449 INFO L226 Difference]: Without dead ends: 94 [2022-11-02 20:56:43,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:56:43,450 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 42 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:43,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 394 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:56:43,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-02 20:56:43,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2022-11-02 20:56:43,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 74 states have (on average 1.2162162162162162) internal successors, (90), 86 states have internal predecessors, (90), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-02 20:56:43,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 98 transitions. [2022-11-02 20:56:43,457 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 98 transitions. Word has length 50 [2022-11-02 20:56:43,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:43,457 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 98 transitions. [2022-11-02 20:56:43,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:56:43,458 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 98 transitions. [2022-11-02 20:56:43,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-02 20:56:43,459 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:43,459 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:56:43,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:43,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:56:43,678 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_kobject_putErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-02 20:56:43,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:43,679 INFO L85 PathProgramCache]: Analyzing trace with hash -774905870, now seen corresponding path program 1 times [2022-11-02 20:56:43,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:43,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1407379098] [2022-11-02 20:56:43,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:43,680 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:43,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:43,681 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:43,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-02 20:56:44,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:44,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 20:56:44,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:44,053 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 20:56:44,299 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-02 20:56:44,299 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:44,299 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:44,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1407379098] [2022-11-02 20:56:44,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1407379098] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:44,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:44,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:56:44,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524914935] [2022-11-02 20:56:44,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:44,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:56:44,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:44,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:56:44,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:56:44,301 INFO L87 Difference]: Start difference. First operand 94 states and 98 transitions. Second operand has 12 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:56:44,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:44,848 INFO L93 Difference]: Finished difference Result 123 states and 129 transitions. [2022-11-02 20:56:44,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:56:44,849 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 56 [2022-11-02 20:56:44,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:44,850 INFO L225 Difference]: With dead ends: 123 [2022-11-02 20:56:44,850 INFO L226 Difference]: Without dead ends: 123 [2022-11-02 20:56:44,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:56:44,851 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 138 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:44,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 345 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 208 Invalid, 0 Unknown, 17 Unchecked, 0.4s Time] [2022-11-02 20:56:44,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-11-02 20:56:44,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 109. [2022-11-02 20:56:44,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 88 states have (on average 1.2159090909090908) internal successors, (107), 100 states have internal predecessors, (107), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-02 20:56:44,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 117 transitions. [2022-11-02 20:56:44,864 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 117 transitions. Word has length 56 [2022-11-02 20:56:44,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:44,865 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 117 transitions. [2022-11-02 20:56:44,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:56:44,865 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 117 transitions. [2022-11-02 20:56:44,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-02 20:56:44,866 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:44,866 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:56:44,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:45,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:56:45,083 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_kobject_putErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-02 20:56:45,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:45,084 INFO L85 PathProgramCache]: Analyzing trace with hash -774905869, now seen corresponding path program 1 times [2022-11-02 20:56:45,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:45,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1193056771] [2022-11-02 20:56:45,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:45,084 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:45,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:45,085 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:45,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-02 20:56:45,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:45,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-02 20:56:45,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:45,442 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 20:56:45,940 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-02 20:56:45,940 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:45,940 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:45,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1193056771] [2022-11-02 20:56:45,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1193056771] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:45,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:45,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-02 20:56:45,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73757366] [2022-11-02 20:56:45,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:45,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:56:45,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:45,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:56:45,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:56:45,942 INFO L87 Difference]: Start difference. First operand 109 states and 117 transitions. Second operand has 13 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:56:46,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:46,606 INFO L93 Difference]: Finished difference Result 111 states and 117 transitions. [2022-11-02 20:56:46,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:56:46,607 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 56 [2022-11-02 20:56:46,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:46,608 INFO L225 Difference]: With dead ends: 111 [2022-11-02 20:56:46,609 INFO L226 Difference]: Without dead ends: 111 [2022-11-02 20:56:46,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:56:46,610 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 150 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:46,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 431 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 235 Invalid, 0 Unknown, 8 Unchecked, 0.5s Time] [2022-11-02 20:56:46,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-11-02 20:56:46,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 107. [2022-11-02 20:56:46,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 88 states have (on average 1.1704545454545454) internal successors, (103), 98 states have internal predecessors, (103), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-02 20:56:46,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 113 transitions. [2022-11-02 20:56:46,615 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 113 transitions. Word has length 56 [2022-11-02 20:56:46,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:46,615 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 113 transitions. [2022-11-02 20:56:46,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:56:46,616 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 113 transitions. [2022-11-02 20:56:46,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-02 20:56:46,616 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:46,616 INFO L195 NwaCegarLoop]: trace histogram [16, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:46,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:46,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:56:46,833 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_kobject_putErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-02 20:56:46,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:46,834 INFO L85 PathProgramCache]: Analyzing trace with hash -178952659, now seen corresponding path program 1 times [2022-11-02 20:56:46,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:46,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1624878899] [2022-11-02 20:56:46,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:46,834 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:46,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:46,835 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:46,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-02 20:56:47,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:47,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:56:47,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:47,340 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-02 20:56:47,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:47,341 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:47,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1624878899] [2022-11-02 20:56:47,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1624878899] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:47,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:47,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:56:47,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183702343] [2022-11-02 20:56:47,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:47,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:56:47,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:47,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:56:47,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:56:47,343 INFO L87 Difference]: Start difference. First operand 107 states and 113 transitions. Second operand has 10 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 20:56:47,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:47,540 INFO L93 Difference]: Finished difference Result 111 states and 115 transitions. [2022-11-02 20:56:47,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:56:47,541 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 62 [2022-11-02 20:56:47,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:47,542 INFO L225 Difference]: With dead ends: 111 [2022-11-02 20:56:47,542 INFO L226 Difference]: Without dead ends: 107 [2022-11-02 20:56:47,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:56:47,543 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 71 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:47,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 514 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:56:47,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-11-02 20:56:47,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2022-11-02 20:56:47,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 88 states have (on average 1.1477272727272727) internal successors, (101), 98 states have internal predecessors, (101), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-02 20:56:47,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2022-11-02 20:56:47,547 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 62 [2022-11-02 20:56:47,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:47,547 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2022-11-02 20:56:47,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 20:56:47,548 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2022-11-02 20:56:47,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-02 20:56:47,548 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:47,548 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:56:47,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:47,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:56:47,749 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_kobject_putErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-02 20:56:47,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:47,749 INFO L85 PathProgramCache]: Analyzing trace with hash 59491574, now seen corresponding path program 1 times [2022-11-02 20:56:47,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:47,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [836067703] [2022-11-02 20:56:47,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:47,750 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:47,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:47,751 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:47,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-02 20:56:48,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:48,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:56:48,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:48,147 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 20:56:48,435 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-02 20:56:48,435 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:48,435 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:48,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [836067703] [2022-11-02 20:56:48,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [836067703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:48,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:48,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-02 20:56:48,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941432281] [2022-11-02 20:56:48,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:48,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:56:48,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:48,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:56:48,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:56:48,438 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand has 13 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:56:49,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:49,125 INFO L93 Difference]: Finished difference Result 116 states and 122 transitions. [2022-11-02 20:56:49,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:56:49,125 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 62 [2022-11-02 20:56:49,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:49,126 INFO L225 Difference]: With dead ends: 116 [2022-11-02 20:56:49,126 INFO L226 Difference]: Without dead ends: 116 [2022-11-02 20:56:49,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:56:49,127 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 98 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:49,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 465 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 330 Invalid, 0 Unknown, 18 Unchecked, 0.6s Time] [2022-11-02 20:56:49,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-02 20:56:49,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 107. [2022-11-02 20:56:49,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 89 states have (on average 1.146067415730337) internal successors, (102), 98 states have internal predecessors, (102), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-02 20:56:49,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 112 transitions. [2022-11-02 20:56:49,133 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 112 transitions. Word has length 62 [2022-11-02 20:56:49,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:49,134 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 112 transitions. [2022-11-02 20:56:49,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:56:49,134 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 112 transitions. [2022-11-02 20:56:49,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-02 20:56:49,135 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:49,135 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:56:49,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-11-02 20:56:49,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:56:49,350 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_kobject_putErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-02 20:56:49,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:49,351 INFO L85 PathProgramCache]: Analyzing trace with hash 59491575, now seen corresponding path program 1 times [2022-11-02 20:56:49,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:49,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1461749578] [2022-11-02 20:56:49,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:49,351 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:49,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:49,352 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:49,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-02 20:56:49,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:49,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-02 20:56:49,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:49,736 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 20:56:50,306 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-02 20:56:50,306 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:50,306 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:50,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1461749578] [2022-11-02 20:56:50,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1461749578] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:50,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:50,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-02 20:56:50,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261271044] [2022-11-02 20:56:50,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:50,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:56:50,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:50,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:56:50,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:56:50,308 INFO L87 Difference]: Start difference. First operand 107 states and 112 transitions. Second operand has 14 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:56:51,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:51,118 INFO L93 Difference]: Finished difference Result 126 states and 130 transitions. [2022-11-02 20:56:51,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:56:51,119 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 62 [2022-11-02 20:56:51,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:51,120 INFO L225 Difference]: With dead ends: 126 [2022-11-02 20:56:51,120 INFO L226 Difference]: Without dead ends: 126 [2022-11-02 20:56:51,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2022-11-02 20:56:51,121 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 166 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:51,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 472 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 249 Invalid, 0 Unknown, 13 Unchecked, 0.6s Time] [2022-11-02 20:56:51,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-11-02 20:56:51,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 114. [2022-11-02 20:56:51,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 97 states have (on average 1.175257731958763) internal successors, (114), 105 states have internal predecessors, (114), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-02 20:56:51,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 122 transitions. [2022-11-02 20:56:51,126 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 122 transitions. Word has length 62 [2022-11-02 20:56:51,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:51,126 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 122 transitions. [2022-11-02 20:56:51,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:56:51,127 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 122 transitions. [2022-11-02 20:56:51,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-02 20:56:51,128 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:51,128 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:56:51,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:51,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:56:51,349 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_kobject_putErr7ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-02 20:56:51,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:51,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1507930724, now seen corresponding path program 1 times [2022-11-02 20:56:51,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:51,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [857166445] [2022-11-02 20:56:51,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:51,350 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:51,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:51,351 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:51,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-02 20:56:51,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:51,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-02 20:56:51,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:52,519 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-02 20:56:52,519 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:52,519 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:52,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [857166445] [2022-11-02 20:56:52,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [857166445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:52,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:52,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-02 20:56:52,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083545336] [2022-11-02 20:56:52,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:52,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:56:52,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:52,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:56:52,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:56:52,522 INFO L87 Difference]: Start difference. First operand 114 states and 122 transitions. Second operand has 14 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:56:53,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:53,145 INFO L93 Difference]: Finished difference Result 121 states and 128 transitions. [2022-11-02 20:56:53,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:56:53,147 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 65 [2022-11-02 20:56:53,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:53,148 INFO L225 Difference]: With dead ends: 121 [2022-11-02 20:56:53,148 INFO L226 Difference]: Without dead ends: 121 [2022-11-02 20:56:53,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:56:53,149 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 207 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:53,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 432 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 189 Invalid, 0 Unknown, 10 Unchecked, 0.4s Time] [2022-11-02 20:56:53,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-11-02 20:56:53,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 113. [2022-11-02 20:56:53,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 97 states have (on average 1.1546391752577319) internal successors, (112), 104 states have internal predecessors, (112), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-02 20:56:53,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 120 transitions. [2022-11-02 20:56:53,153 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 120 transitions. Word has length 65 [2022-11-02 20:56:53,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:53,153 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 120 transitions. [2022-11-02 20:56:53,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:56:53,153 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 120 transitions. [2022-11-02 20:56:53,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-02 20:56:53,162 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:53,162 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:56:53,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:53,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:56:53,372 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_kobject_putErr9ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-02 20:56:53,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:53,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1701102758, now seen corresponding path program 1 times [2022-11-02 20:56:53,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:53,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [863544757] [2022-11-02 20:56:53,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:53,373 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:53,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:53,374 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:53,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-02 20:56:53,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:53,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 86 conjunts are in the unsatisfiable core [2022-11-02 20:56:53,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:54,125 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 38 [2022-11-02 20:56:59,274 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2050 (_ BitVec 8)) (v_ArrVal_2049 (_ BitVec 8))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_int)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_2049) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_2050)))) is different from true [2022-11-02 20:56:59,293 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 32 [2022-11-02 20:56:59,778 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:56:59,784 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:56:59,784 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 70 treesize of output 69 [2022-11-02 20:57:00,162 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:57:00,163 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 23 [2022-11-02 20:57:00,498 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-02 20:57:00,498 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:57:00,498 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:57:00,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [863544757] [2022-11-02 20:57:00,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [863544757] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:00,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:57:00,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-11-02 20:57:00,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306388995] [2022-11-02 20:57:00,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:00,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-02 20:57:00,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:57:00,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-02 20:57:00,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=641, Unknown=2, NotChecked=50, Total=756 [2022-11-02 20:57:00,500 INFO L87 Difference]: Start difference. First operand 113 states and 120 transitions. Second operand has 28 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 25 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:57:01,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:57:01,975 INFO L93 Difference]: Finished difference Result 101 states and 103 transitions. [2022-11-02 20:57:01,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-02 20:57:01,979 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 25 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 68 [2022-11-02 20:57:01,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:57:01,980 INFO L225 Difference]: With dead ends: 101 [2022-11-02 20:57:01,980 INFO L226 Difference]: Without dead ends: 101 [2022-11-02 20:57:01,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=136, Invalid=1198, Unknown=2, NotChecked=70, Total=1406 [2022-11-02 20:57:01,982 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 36 mSDsluCounter, 1029 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1084 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 343 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:57:01,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1084 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 258 Invalid, 0 Unknown, 343 Unchecked, 0.7s Time] [2022-11-02 20:57:01,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-11-02 20:57:01,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2022-11-02 20:57:01,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 85 states have (on average 1.1176470588235294) internal successors, (95), 92 states have internal predecessors, (95), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-02 20:57:01,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 103 transitions. [2022-11-02 20:57:01,988 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 103 transitions. Word has length 68 [2022-11-02 20:57:01,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:57:01,989 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 103 transitions. [2022-11-02 20:57:01,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 25 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:57:01,989 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 103 transitions. [2022-11-02 20:57:01,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-02 20:57:01,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:57:01,990 INFO L195 NwaCegarLoop]: trace histogram [16, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:02,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-02 20:57:02,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:57:02,191 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_kobject_putErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-02 20:57:02,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:02,191 INFO L85 PathProgramCache]: Analyzing trace with hash -756328715, now seen corresponding path program 1 times [2022-11-02 20:57:02,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:57:02,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [639411291] [2022-11-02 20:57:02,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:02,192 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:57:02,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:57:02,193 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:57:02,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-02 20:57:02,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:02,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 20:57:02,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:57:02,669 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 20:57:02,916 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-02 20:57:02,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:57:03,208 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-02 20:57:03,208 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:57:03,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [639411291] [2022-11-02 20:57:03,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [639411291] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:57:03,209 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:57:03,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 12 [2022-11-02 20:57:03,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759157501] [2022-11-02 20:57:03,209 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:57:03,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:57:03,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:57:03,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:57:03,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:57:03,211 INFO L87 Difference]: Start difference. First operand 101 states and 103 transitions. Second operand has 13 states, 12 states have (on average 5.25) internal successors, (63), 11 states have internal predecessors, (63), 3 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-02 20:57:03,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:57:03,704 INFO L93 Difference]: Finished difference Result 107 states and 108 transitions. [2022-11-02 20:57:03,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:57:03,704 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.25) internal successors, (63), 11 states have internal predecessors, (63), 3 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 70 [2022-11-02 20:57:03,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:57:03,705 INFO L225 Difference]: With dead ends: 107 [2022-11-02 20:57:03,705 INFO L226 Difference]: Without dead ends: 107 [2022-11-02 20:57:03,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:57:03,706 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 108 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:57:03,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 363 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 200 Invalid, 0 Unknown, 47 Unchecked, 0.4s Time] [2022-11-02 20:57:03,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-11-02 20:57:03,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 100. [2022-11-02 20:57:03,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 85 states have (on average 1.1058823529411765) internal successors, (94), 91 states have internal predecessors, (94), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-02 20:57:03,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 102 transitions. [2022-11-02 20:57:03,710 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 102 transitions. Word has length 70 [2022-11-02 20:57:03,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:57:03,710 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 102 transitions. [2022-11-02 20:57:03,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.25) internal successors, (63), 11 states have internal predecessors, (63), 3 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-02 20:57:03,710 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 102 transitions. [2022-11-02 20:57:03,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 20:57:03,711 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:57:03,711 INFO L195 NwaCegarLoop]: trace histogram [16, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:03,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-02 20:57:03,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:57:03,929 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_kobject_putErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-02 20:57:03,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:03,929 INFO L85 PathProgramCache]: Analyzing trace with hash 681881017, now seen corresponding path program 1 times [2022-11-02 20:57:03,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:57:03,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1554131338] [2022-11-02 20:57:03,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:03,930 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:57:03,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:57:03,932 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:57:03,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-02 20:57:04,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:04,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:57:04,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:57:04,438 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 20:57:04,757 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-02 20:57:04,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:57:05,041 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-02 20:57:05,042 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:57:05,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1554131338] [2022-11-02 20:57:05,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1554131338] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:57:05,042 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:57:05,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 13 [2022-11-02 20:57:05,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589665909] [2022-11-02 20:57:05,043 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:57:05,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:57:05,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:57:05,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:57:05,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:57:05,045 INFO L87 Difference]: Start difference. First operand 100 states and 102 transitions. Second operand has 14 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 states have internal predecessors, (69), 3 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-02 20:57:05,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:57:05,653 INFO L93 Difference]: Finished difference Result 106 states and 107 transitions. [2022-11-02 20:57:05,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:57:05,654 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 states have internal predecessors, (69), 3 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 76 [2022-11-02 20:57:05,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:57:05,655 INFO L225 Difference]: With dead ends: 106 [2022-11-02 20:57:05,655 INFO L226 Difference]: Without dead ends: 106 [2022-11-02 20:57:05,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:57:05,656 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 91 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:57:05,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 441 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 256 Invalid, 0 Unknown, 51 Unchecked, 0.5s Time] [2022-11-02 20:57:05,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-11-02 20:57:05,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 99. [2022-11-02 20:57:05,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 85 states have (on average 1.0941176470588236) internal successors, (93), 90 states have internal predecessors, (93), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-02 20:57:05,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 101 transitions. [2022-11-02 20:57:05,659 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 101 transitions. Word has length 76 [2022-11-02 20:57:05,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:57:05,660 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 101 transitions. [2022-11-02 20:57:05,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 states have internal predecessors, (69), 3 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-02 20:57:05,660 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 101 transitions. [2022-11-02 20:57:05,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 20:57:05,661 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:57:05,661 INFO L195 NwaCegarLoop]: trace histogram [16, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:05,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-02 20:57:05,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:57:05,871 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_kobject_putErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-02 20:57:05,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:05,871 INFO L85 PathProgramCache]: Analyzing trace with hash 681881018, now seen corresponding path program 1 times [2022-11-02 20:57:05,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:57:05,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [347604462] [2022-11-02 20:57:05,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:05,872 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:57:05,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:57:05,873 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:57:05,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-02 20:57:06,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:06,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-02 20:57:06,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:57:06,357 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 20:57:06,898 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-02 20:57:06,898 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:57:06,898 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:57:06,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [347604462] [2022-11-02 20:57:06,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [347604462] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:06,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:57:06,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-02 20:57:06,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591227004] [2022-11-02 20:57:06,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:06,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:57:06,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:57:06,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:57:06,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:57:06,900 INFO L87 Difference]: Start difference. First operand 99 states and 101 transitions. Second operand has 13 states, 12 states have (on average 4.5) internal successors, (54), 11 states have internal predecessors, (54), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 20:57:07,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:57:07,432 INFO L93 Difference]: Finished difference Result 101 states and 103 transitions. [2022-11-02 20:57:07,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:57:07,433 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.5) internal successors, (54), 11 states have internal predecessors, (54), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 76 [2022-11-02 20:57:07,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:57:07,434 INFO L225 Difference]: With dead ends: 101 [2022-11-02 20:57:07,434 INFO L226 Difference]: Without dead ends: 101 [2022-11-02 20:57:07,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 61 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:57:07,435 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 92 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:57:07,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 512 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 214 Invalid, 0 Unknown, 17 Unchecked, 0.4s Time] [2022-11-02 20:57:07,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-11-02 20:57:07,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 97. [2022-11-02 20:57:07,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 85 states have (on average 1.0705882352941176) internal successors, (91), 88 states have internal predecessors, (91), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-02 20:57:07,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 99 transitions. [2022-11-02 20:57:07,439 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 99 transitions. Word has length 76 [2022-11-02 20:57:07,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:57:07,439 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 99 transitions. [2022-11-02 20:57:07,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.5) internal successors, (54), 11 states have internal predecessors, (54), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 20:57:07,440 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 99 transitions. [2022-11-02 20:57:07,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-02 20:57:07,440 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:57:07,441 INFO L195 NwaCegarLoop]: trace histogram [16, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:07,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-02 20:57:07,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:57:07,659 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-02 20:57:07,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:07,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1200120414, now seen corresponding path program 1 times [2022-11-02 20:57:07,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:57:07,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [477457111] [2022-11-02 20:57:07,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:07,660 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:57:07,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:57:07,661 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:57:07,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-02 20:57:08,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:08,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 122 conjunts are in the unsatisfiable core [2022-11-02 20:57:08,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:57:08,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:57:08,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:57:08,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:57:08,572 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:57:08,572 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:57:08,574 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 41 [2022-11-02 20:57:13,462 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2734 (_ BitVec 8)) (v_ArrVal_2733 (_ BitVec 8))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_int)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_2733) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_2734)))) is different from true [2022-11-02 20:57:13,481 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:57:13,482 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 71 [2022-11-02 20:57:14,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:57:14,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:57:14,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:57:14,082 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:57:14,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:57:14,088 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:57:14,089 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:57:14,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:57:14,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:57:14,093 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:57:14,108 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:57:14,109 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 193 treesize of output 165 [2022-11-02 20:57:15,187 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:57:15,188 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 249 treesize of output 137 [2022-11-02 20:57:20,166 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-11-02 20:57:20,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:57:33,790 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_~kobj~2#1.base_BEFORE_CALL_12| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_6| (_ BitVec 32))) (let ((.cse1 (bvadd |v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_6| (_ bv15 32))) (.cse2 (bvadd (_ bv14 32) |v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_6|)) (.cse3 (bvadd |v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_6| (_ bv13 32))) (.cse4 (bvadd |v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_6| (_ bv12 32)))) (or (= (_ bv1 32) (let ((.cse0 (select |c_#memory_int| |v_ULTIMATE.start_entry_point_~kobj~2#1.base_BEFORE_CALL_12|))) (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 .cse4)))) (not (= (let ((.cse5 (select (store |c_old(#memory_int)| |c_ldv_kobject_put_#in~kobj#1.base| (let ((.cse11 (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv15 32))) (.cse10 (bvadd (_ bv14 32) |c_ldv_kobject_put_#in~kobj#1.offset|)) (.cse9 (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv13 32))) (.cse6 (select |c_old(#memory_int)| |c_ldv_kobject_put_#in~kobj#1.base|)) (.cse7 (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv12 32)))) (let ((.cse8 (bvadd (_ bv4294967295 32) (concat (concat (concat (select .cse6 .cse11) (select .cse6 .cse10)) (select .cse6 .cse9)) (select .cse6 .cse7))))) (store (store (store (store .cse6 .cse7 ((_ extract 7 0) .cse8)) .cse9 ((_ extract 15 8) .cse8)) .cse10 ((_ extract 23 16) .cse8)) .cse11 ((_ extract 31 24) .cse8))))) |v_ULTIMATE.start_entry_point_~kobj~2#1.base_BEFORE_CALL_12|))) (concat (concat (concat (select .cse5 .cse1) (select .cse5 .cse2)) (select .cse5 .cse3)) (select .cse5 .cse4))) (_ bv1 32)))))) is different from false [2022-11-02 20:57:36,009 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_~kobj~2#1.base_BEFORE_CALL_12| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_6| (_ BitVec 32))) (let ((.cse1 (bvadd |v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_6| (_ bv15 32))) (.cse2 (bvadd (_ bv14 32) |v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_6|)) (.cse3 (bvadd |v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_6| (_ bv13 32))) (.cse4 (bvadd |v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_6| (_ bv12 32)))) (or (not (= (let ((.cse0 (select (store |c_old(#memory_int)| |c_ldv_kobject_put_#in~kobj#1.base| (let ((.cse10 (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv15 32))) (.cse9 (bvadd (_ bv14 32) |c_ldv_kobject_put_#in~kobj#1.offset|)) (.cse8 (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv13 32))) (.cse5 (select |c_old(#memory_int)| |c_ldv_kobject_put_#in~kobj#1.base|)) (.cse6 (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv12 32)))) (let ((.cse7 (bvadd (_ bv4294967295 32) (concat (concat (concat (select .cse5 .cse10) (select .cse5 .cse9)) (select .cse5 .cse8)) (select .cse5 .cse6))))) (store (store (store (store .cse5 .cse6 ((_ extract 7 0) .cse7)) .cse8 ((_ extract 15 8) .cse7)) .cse9 ((_ extract 23 16) .cse7)) .cse10 ((_ extract 31 24) .cse7))))) |v_ULTIMATE.start_entry_point_~kobj~2#1.base_BEFORE_CALL_12|))) (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 .cse4))) (_ bv1 32))) (= (let ((.cse11 (select (store |c_#memory_int| |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.base| (store (store (store (store (select |c_#memory_int| |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.base|) |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.offset| ((_ extract 7 0) |c_ldv_kobject_put_ldv_atomic_sub_return_~temp~1#1|)) (bvadd |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.offset| (_ bv1 32)) ((_ extract 15 8) |c_ldv_kobject_put_ldv_atomic_sub_return_~temp~1#1|)) (bvadd (_ bv2 32) |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.offset|) ((_ extract 23 16) |c_ldv_kobject_put_ldv_atomic_sub_return_~temp~1#1|)) (bvadd |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.offset| (_ bv3 32)) ((_ extract 31 24) |c_ldv_kobject_put_ldv_atomic_sub_return_~temp~1#1|))) |v_ULTIMATE.start_entry_point_~kobj~2#1.base_BEFORE_CALL_12|))) (concat (concat (concat (select .cse11 .cse1) (select .cse11 .cse2)) (select .cse11 .cse3)) (select .cse11 .cse4))) (_ bv1 32))))) is different from false [2022-11-02 20:57:38,109 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_~kobj~2#1.base_BEFORE_CALL_12| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_6| (_ BitVec 32))) (let ((.cse1 (bvadd |v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_6| (_ bv15 32))) (.cse2 (bvadd (_ bv14 32) |v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_6|)) (.cse3 (bvadd |v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_6| (_ bv13 32))) (.cse4 (bvadd |v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_6| (_ bv12 32)))) (or (not (= (let ((.cse0 (select (store |c_old(#memory_int)| |c_ldv_kobject_put_#in~kobj#1.base| (let ((.cse10 (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv15 32))) (.cse9 (bvadd (_ bv14 32) |c_ldv_kobject_put_#in~kobj#1.offset|)) (.cse8 (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv13 32))) (.cse5 (select |c_old(#memory_int)| |c_ldv_kobject_put_#in~kobj#1.base|)) (.cse6 (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv12 32)))) (let ((.cse7 (bvadd (_ bv4294967295 32) (concat (concat (concat (select .cse5 .cse10) (select .cse5 .cse9)) (select .cse5 .cse8)) (select .cse5 .cse6))))) (store (store (store (store .cse5 .cse6 ((_ extract 7 0) .cse7)) .cse8 ((_ extract 15 8) .cse7)) .cse9 ((_ extract 23 16) .cse7)) .cse10 ((_ extract 31 24) .cse7))))) |v_ULTIMATE.start_entry_point_~kobj~2#1.base_BEFORE_CALL_12|))) (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 .cse4))) (_ bv1 32))) (= (let ((.cse11 (select (store |c_#memory_int| |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.base| (let ((.cse12 (bvadd |c_ldv_kobject_put_ldv_atomic_sub_return_#t~mem28#1| (bvneg |c_ldv_kobject_put_ldv_atomic_sub_return_~i#1|)))) (store (store (store (store (select |c_#memory_int| |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.base|) |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.offset| ((_ extract 7 0) .cse12)) (bvadd |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.offset| (_ bv1 32)) ((_ extract 15 8) .cse12)) (bvadd (_ bv2 32) |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.offset|) ((_ extract 23 16) .cse12)) (bvadd |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.offset| (_ bv3 32)) ((_ extract 31 24) .cse12)))) |v_ULTIMATE.start_entry_point_~kobj~2#1.base_BEFORE_CALL_12|))) (concat (concat (concat (select .cse11 .cse1) (select .cse11 .cse2)) (select .cse11 .cse3)) (select .cse11 .cse4))) (_ bv1 32))))) is different from false [2022-11-02 20:57:40,171 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_~kobj~2#1.base_BEFORE_CALL_12| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_6| (_ BitVec 32))) (let ((.cse1 (bvadd |v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_6| (_ bv15 32))) (.cse2 (bvadd (_ bv14 32) |v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_6|)) (.cse3 (bvadd |v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_6| (_ bv13 32))) (.cse4 (bvadd |v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_6| (_ bv12 32)))) (or (not (= (let ((.cse0 (select (store |c_old(#memory_int)| |c_ldv_kobject_put_#in~kobj#1.base| (let ((.cse10 (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv15 32))) (.cse9 (bvadd (_ bv14 32) |c_ldv_kobject_put_#in~kobj#1.offset|)) (.cse8 (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv13 32))) (.cse5 (select |c_old(#memory_int)| |c_ldv_kobject_put_#in~kobj#1.base|)) (.cse6 (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv12 32)))) (let ((.cse7 (bvadd (_ bv4294967295 32) (concat (concat (concat (select .cse5 .cse10) (select .cse5 .cse9)) (select .cse5 .cse8)) (select .cse5 .cse6))))) (store (store (store (store .cse5 .cse6 ((_ extract 7 0) .cse7)) .cse8 ((_ extract 15 8) .cse7)) .cse9 ((_ extract 23 16) .cse7)) .cse10 ((_ extract 31 24) .cse7))))) |v_ULTIMATE.start_entry_point_~kobj~2#1.base_BEFORE_CALL_12|))) (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 .cse4))) (_ bv1 32))) (= (let ((.cse11 (select (store |c_#memory_int| |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.base| (let ((.cse16 (bvadd |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.offset| (_ bv3 32))) (.cse15 (bvadd (_ bv2 32) |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.offset|)) (.cse14 (bvadd |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.offset| (_ bv1 32))) (.cse12 (select |c_#memory_int| |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.base|))) (let ((.cse13 (bvadd (bvneg |c_ldv_kobject_put_ldv_atomic_sub_return_~i#1|) (concat (concat (concat (select .cse12 .cse16) (select .cse12 .cse15)) (select .cse12 .cse14)) (select .cse12 |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.offset|))))) (store (store (store (store .cse12 |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.offset| ((_ extract 7 0) .cse13)) .cse14 ((_ extract 15 8) .cse13)) .cse15 ((_ extract 23 16) .cse13)) .cse16 ((_ extract 31 24) .cse13))))) |v_ULTIMATE.start_entry_point_~kobj~2#1.base_BEFORE_CALL_12|))) (concat (concat (concat (select .cse11 .cse1) (select .cse11 .cse2)) (select .cse11 .cse3)) (select .cse11 .cse4))) (_ bv1 32))))) is different from false [2022-11-02 20:57:42,227 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_~kobj~2#1.base_BEFORE_CALL_12| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_6| (_ BitVec 32))) (let ((.cse1 (bvadd |v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_6| (_ bv15 32))) (.cse2 (bvadd (_ bv14 32) |v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_6|)) (.cse3 (bvadd |v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_6| (_ bv13 32))) (.cse4 (bvadd |v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_6| (_ bv12 32)))) (or (not (= (let ((.cse0 (select (store |c_old(#memory_int)| |c_ldv_kobject_put_#in~kobj#1.base| (let ((.cse10 (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv15 32))) (.cse9 (bvadd (_ bv14 32) |c_ldv_kobject_put_#in~kobj#1.offset|)) (.cse8 (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv13 32))) (.cse5 (select |c_old(#memory_int)| |c_ldv_kobject_put_#in~kobj#1.base|)) (.cse6 (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv12 32)))) (let ((.cse7 (bvadd (_ bv4294967295 32) (concat (concat (concat (select .cse5 .cse10) (select .cse5 .cse9)) (select .cse5 .cse8)) (select .cse5 .cse6))))) (store (store (store (store .cse5 .cse6 ((_ extract 7 0) .cse7)) .cse8 ((_ extract 15 8) .cse7)) .cse9 ((_ extract 23 16) .cse7)) .cse10 ((_ extract 31 24) .cse7))))) |v_ULTIMATE.start_entry_point_~kobj~2#1.base_BEFORE_CALL_12|))) (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 .cse4))) (_ bv1 32))) (= (let ((.cse11 (select (store |c_#memory_int| |c_ldv_kobject_put_~kobj#1.base| (let ((.cse17 (bvadd |c_ldv_kobject_put_~kobj#1.offset| (_ bv15 32))) (.cse16 (bvadd |c_ldv_kobject_put_~kobj#1.offset| (_ bv14 32))) (.cse15 (bvadd |c_ldv_kobject_put_~kobj#1.offset| (_ bv13 32))) (.cse12 (select |c_#memory_int| |c_ldv_kobject_put_~kobj#1.base|)) (.cse13 (bvadd |c_ldv_kobject_put_~kobj#1.offset| (_ bv12 32)))) (let ((.cse14 (bvadd (concat (concat (concat (select .cse12 .cse17) (select .cse12 .cse16)) (select .cse12 .cse15)) (select .cse12 .cse13)) (_ bv4294967295 32)))) (store (store (store (store .cse12 .cse13 ((_ extract 7 0) .cse14)) .cse15 ((_ extract 15 8) .cse14)) .cse16 ((_ extract 23 16) .cse14)) .cse17 ((_ extract 31 24) .cse14))))) |v_ULTIMATE.start_entry_point_~kobj~2#1.base_BEFORE_CALL_12|))) (concat (concat (concat (select .cse11 .cse1) (select .cse11 .cse2)) (select .cse11 .cse3)) (select .cse11 .cse4))) (_ bv1 32))))) is different from false [2022-11-02 20:57:44,288 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_~kobj~2#1.base_BEFORE_CALL_12| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_6| (_ BitVec 32))) (let ((.cse1 (bvadd |v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_6| (_ bv15 32))) (.cse2 (bvadd (_ bv14 32) |v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_6|)) (.cse3 (bvadd |v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_6| (_ bv13 32))) (.cse4 (bvadd |v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_6| (_ bv12 32))) (.cse10 (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv15 32))) (.cse9 (bvadd (_ bv14 32) |c_ldv_kobject_put_#in~kobj#1.offset|)) (.cse8 (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv13 32))) (.cse6 (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv12 32)))) (or (not (= (let ((.cse0 (select (store |c_old(#memory_int)| |c_ldv_kobject_put_#in~kobj#1.base| (let ((.cse5 (select |c_old(#memory_int)| |c_ldv_kobject_put_#in~kobj#1.base|))) (let ((.cse7 (bvadd (_ bv4294967295 32) (concat (concat (concat (select .cse5 .cse10) (select .cse5 .cse9)) (select .cse5 .cse8)) (select .cse5 .cse6))))) (store (store (store (store .cse5 .cse6 ((_ extract 7 0) .cse7)) .cse8 ((_ extract 15 8) .cse7)) .cse9 ((_ extract 23 16) .cse7)) .cse10 ((_ extract 31 24) .cse7))))) |v_ULTIMATE.start_entry_point_~kobj~2#1.base_BEFORE_CALL_12|))) (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 .cse4))) (_ bv1 32))) (= (let ((.cse11 (select (store |c_#memory_int| |c_ldv_kobject_put_#in~kobj#1.base| (let ((.cse12 (select |c_#memory_int| |c_ldv_kobject_put_#in~kobj#1.base|))) (let ((.cse13 (bvadd (_ bv4294967295 32) (concat (concat (concat (select .cse12 .cse10) (select .cse12 .cse9)) (select .cse12 .cse8)) (select .cse12 .cse6))))) (store (store (store (store .cse12 .cse6 ((_ extract 7 0) .cse13)) .cse8 ((_ extract 15 8) .cse13)) .cse9 ((_ extract 23 16) .cse13)) .cse10 ((_ extract 31 24) .cse13))))) |v_ULTIMATE.start_entry_point_~kobj~2#1.base_BEFORE_CALL_12|))) (concat (concat (concat (select .cse11 .cse1) (select .cse11 .cse2)) (select .cse11 .cse3)) (select .cse11 .cse4))) (_ bv1 32))))) is different from false [2022-11-02 20:57:48,270 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:57:48,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [477457111] [2022-11-02 20:57:48,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [477457111] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:57:48,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1886737489] [2022-11-02 20:57:48,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:48,271 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-02 20:57:48,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/cvc4 [2022-11-02 20:57:48,272 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-02 20:57:48,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2022-11-02 20:57:50,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:50,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 139 conjunts are in the unsatisfiable core [2022-11-02 20:57:50,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:57:52,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:57:52,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:57:52,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:57:52,984 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:57:52,984 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:57:52,986 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 41 [2022-11-02 20:57:56,941 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2733 (_ BitVec 8)) (v_ArrVal_2937 (_ BitVec 8))) (= (store |c_old(#memory_int)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_int)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_2733) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_2937)) |c_#memory_int|)) is different from true [2022-11-02 20:57:56,969 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:57:56,969 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 71 [2022-11-02 20:57:57,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:57:57,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:57:57,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:57:57,172 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:57:57,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:57:57,173 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:57:57,174 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:57:57,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:57:57,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:57:57,177 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:57:57,192 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:57:57,193 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 193 treesize of output 165 [2022-11-02 20:57:57,577 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:57:57,578 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 249 treesize of output 137 [2022-11-02 20:57:57,735 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-02 20:57:57,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:58:01,553 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_~kobj~2#1.base_BEFORE_CALL_16| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_10| (_ BitVec 32))) (let ((.cse1 (bvadd |v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_10| (_ bv15 32))) (.cse2 (bvadd |v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_10| (_ bv14 32))) (.cse3 (bvadd |v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_10| (_ bv13 32))) (.cse4 (bvadd |v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_10| (_ bv12 32)))) (or (not (= (let ((.cse0 (select (store |c_old(#memory_int)| |c_ldv_kobject_put_#in~kobj#1.base| (let ((.cse10 (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv15 32))) (.cse9 (bvadd (_ bv14 32) |c_ldv_kobject_put_#in~kobj#1.offset|)) (.cse8 (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv13 32))) (.cse5 (select |c_old(#memory_int)| |c_ldv_kobject_put_#in~kobj#1.base|)) (.cse6 (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv12 32)))) (let ((.cse7 (bvadd (_ bv4294967295 32) (concat (concat (concat (select .cse5 .cse10) (select .cse5 .cse9)) (select .cse5 .cse8)) (select .cse5 .cse6))))) (store (store (store (store .cse5 .cse6 ((_ extract 7 0) .cse7)) .cse8 ((_ extract 15 8) .cse7)) .cse9 ((_ extract 23 16) .cse7)) .cse10 ((_ extract 31 24) .cse7))))) |v_ULTIMATE.start_entry_point_~kobj~2#1.base_BEFORE_CALL_16|))) (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 .cse4))) (_ bv1 32))) (= (_ bv1 32) (let ((.cse11 (select |c_#memory_int| |v_ULTIMATE.start_entry_point_~kobj~2#1.base_BEFORE_CALL_16|))) (concat (concat (concat (select .cse11 .cse1) (select .cse11 .cse2)) (select .cse11 .cse3)) (select .cse11 .cse4))))))) is different from false [2022-11-02 20:58:03,782 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_~kobj~2#1.base_BEFORE_CALL_16| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_10| (_ BitVec 32))) (let ((.cse1 (bvadd |v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_10| (_ bv15 32))) (.cse2 (bvadd |v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_10| (_ bv14 32))) (.cse3 (bvadd |v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_10| (_ bv13 32))) (.cse4 (bvadd |v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_10| (_ bv12 32)))) (or (not (= (let ((.cse0 (select (store |c_old(#memory_int)| |c_ldv_kobject_put_#in~kobj#1.base| (let ((.cse10 (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv15 32))) (.cse9 (bvadd (_ bv14 32) |c_ldv_kobject_put_#in~kobj#1.offset|)) (.cse8 (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv13 32))) (.cse5 (select |c_old(#memory_int)| |c_ldv_kobject_put_#in~kobj#1.base|)) (.cse6 (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv12 32)))) (let ((.cse7 (bvadd (_ bv4294967295 32) (concat (concat (concat (select .cse5 .cse10) (select .cse5 .cse9)) (select .cse5 .cse8)) (select .cse5 .cse6))))) (store (store (store (store .cse5 .cse6 ((_ extract 7 0) .cse7)) .cse8 ((_ extract 15 8) .cse7)) .cse9 ((_ extract 23 16) .cse7)) .cse10 ((_ extract 31 24) .cse7))))) |v_ULTIMATE.start_entry_point_~kobj~2#1.base_BEFORE_CALL_16|))) (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 .cse4))) (_ bv1 32))) (= (_ bv1 32) (let ((.cse11 (select (store |c_#memory_int| |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.base| (store (store (store (store (select |c_#memory_int| |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.base|) |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.offset| ((_ extract 7 0) |c_ldv_kobject_put_ldv_atomic_sub_return_~temp~1#1|)) (bvadd |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.offset| (_ bv1 32)) ((_ extract 15 8) |c_ldv_kobject_put_ldv_atomic_sub_return_~temp~1#1|)) (bvadd (_ bv2 32) |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.offset|) ((_ extract 23 16) |c_ldv_kobject_put_ldv_atomic_sub_return_~temp~1#1|)) (bvadd |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.offset| (_ bv3 32)) ((_ extract 31 24) |c_ldv_kobject_put_ldv_atomic_sub_return_~temp~1#1|))) |v_ULTIMATE.start_entry_point_~kobj~2#1.base_BEFORE_CALL_16|))) (concat (concat (concat (select .cse11 .cse1) (select .cse11 .cse2)) (select .cse11 .cse3)) (select .cse11 .cse4))))))) is different from false [2022-11-02 20:58:05,889 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_~kobj~2#1.base_BEFORE_CALL_16| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_10| (_ BitVec 32))) (let ((.cse1 (bvadd |v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_10| (_ bv15 32))) (.cse2 (bvadd |v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_10| (_ bv14 32))) (.cse3 (bvadd |v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_10| (_ bv13 32))) (.cse4 (bvadd |v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_10| (_ bv12 32)))) (or (not (= (let ((.cse0 (select (store |c_old(#memory_int)| |c_ldv_kobject_put_#in~kobj#1.base| (let ((.cse10 (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv15 32))) (.cse9 (bvadd (_ bv14 32) |c_ldv_kobject_put_#in~kobj#1.offset|)) (.cse8 (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv13 32))) (.cse5 (select |c_old(#memory_int)| |c_ldv_kobject_put_#in~kobj#1.base|)) (.cse6 (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv12 32)))) (let ((.cse7 (bvadd (_ bv4294967295 32) (concat (concat (concat (select .cse5 .cse10) (select .cse5 .cse9)) (select .cse5 .cse8)) (select .cse5 .cse6))))) (store (store (store (store .cse5 .cse6 ((_ extract 7 0) .cse7)) .cse8 ((_ extract 15 8) .cse7)) .cse9 ((_ extract 23 16) .cse7)) .cse10 ((_ extract 31 24) .cse7))))) |v_ULTIMATE.start_entry_point_~kobj~2#1.base_BEFORE_CALL_16|))) (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 .cse4))) (_ bv1 32))) (= (_ bv1 32) (let ((.cse11 (select (store |c_#memory_int| |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.base| (let ((.cse12 (bvadd |c_ldv_kobject_put_ldv_atomic_sub_return_#t~mem28#1| (bvneg |c_ldv_kobject_put_ldv_atomic_sub_return_~i#1|)))) (store (store (store (store (select |c_#memory_int| |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.base|) |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.offset| ((_ extract 7 0) .cse12)) (bvadd |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.offset| (_ bv1 32)) ((_ extract 15 8) .cse12)) (bvadd (_ bv2 32) |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.offset|) ((_ extract 23 16) .cse12)) (bvadd |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.offset| (_ bv3 32)) ((_ extract 31 24) .cse12)))) |v_ULTIMATE.start_entry_point_~kobj~2#1.base_BEFORE_CALL_16|))) (concat (concat (concat (select .cse11 .cse1) (select .cse11 .cse2)) (select .cse11 .cse3)) (select .cse11 .cse4))))))) is different from false [2022-11-02 20:58:07,974 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_~kobj~2#1.base_BEFORE_CALL_16| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_10| (_ BitVec 32))) (let ((.cse1 (bvadd |v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_10| (_ bv15 32))) (.cse2 (bvadd |v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_10| (_ bv14 32))) (.cse3 (bvadd |v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_10| (_ bv13 32))) (.cse4 (bvadd |v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_10| (_ bv12 32)))) (or (= (let ((.cse0 (select (store |c_#memory_int| |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.base| (let ((.cse9 (bvadd |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.offset| (_ bv3 32))) (.cse8 (bvadd (_ bv2 32) |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.offset|)) (.cse7 (bvadd |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.offset| (_ bv1 32))) (.cse5 (select |c_#memory_int| |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.base|))) (let ((.cse6 (bvadd (bvneg |c_ldv_kobject_put_ldv_atomic_sub_return_~i#1|) (concat (concat (concat (select .cse5 .cse9) (select .cse5 .cse8)) (select .cse5 .cse7)) (select .cse5 |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.offset|))))) (store (store (store (store .cse5 |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.offset| ((_ extract 7 0) .cse6)) .cse7 ((_ extract 15 8) .cse6)) .cse8 ((_ extract 23 16) .cse6)) .cse9 ((_ extract 31 24) .cse6))))) |v_ULTIMATE.start_entry_point_~kobj~2#1.base_BEFORE_CALL_16|))) (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 .cse4))) (_ bv1 32)) (not (= (let ((.cse10 (select (store |c_old(#memory_int)| |c_ldv_kobject_put_#in~kobj#1.base| (let ((.cse16 (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv15 32))) (.cse15 (bvadd (_ bv14 32) |c_ldv_kobject_put_#in~kobj#1.offset|)) (.cse14 (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv13 32))) (.cse11 (select |c_old(#memory_int)| |c_ldv_kobject_put_#in~kobj#1.base|)) (.cse12 (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv12 32)))) (let ((.cse13 (bvadd (_ bv4294967295 32) (concat (concat (concat (select .cse11 .cse16) (select .cse11 .cse15)) (select .cse11 .cse14)) (select .cse11 .cse12))))) (store (store (store (store .cse11 .cse12 ((_ extract 7 0) .cse13)) .cse14 ((_ extract 15 8) .cse13)) .cse15 ((_ extract 23 16) .cse13)) .cse16 ((_ extract 31 24) .cse13))))) |v_ULTIMATE.start_entry_point_~kobj~2#1.base_BEFORE_CALL_16|))) (concat (concat (concat (select .cse10 .cse1) (select .cse10 .cse2)) (select .cse10 .cse3)) (select .cse10 .cse4))) (_ bv1 32)))))) is different from false [2022-11-02 20:58:10,035 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_~kobj~2#1.base_BEFORE_CALL_16| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_10| (_ BitVec 32))) (let ((.cse1 (bvadd |v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_10| (_ bv15 32))) (.cse2 (bvadd |v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_10| (_ bv14 32))) (.cse3 (bvadd |v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_10| (_ bv13 32))) (.cse4 (bvadd |v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_10| (_ bv12 32)))) (or (= (let ((.cse0 (select (store |c_#memory_int| |c_ldv_kobject_put_~kobj#1.base| (let ((.cse10 (bvadd |c_ldv_kobject_put_~kobj#1.offset| (_ bv15 32))) (.cse9 (bvadd |c_ldv_kobject_put_~kobj#1.offset| (_ bv14 32))) (.cse8 (bvadd |c_ldv_kobject_put_~kobj#1.offset| (_ bv13 32))) (.cse5 (select |c_#memory_int| |c_ldv_kobject_put_~kobj#1.base|)) (.cse6 (bvadd |c_ldv_kobject_put_~kobj#1.offset| (_ bv12 32)))) (let ((.cse7 (bvadd (concat (concat (concat (select .cse5 .cse10) (select .cse5 .cse9)) (select .cse5 .cse8)) (select .cse5 .cse6)) (_ bv4294967295 32)))) (store (store (store (store .cse5 .cse6 ((_ extract 7 0) .cse7)) .cse8 ((_ extract 15 8) .cse7)) .cse9 ((_ extract 23 16) .cse7)) .cse10 ((_ extract 31 24) .cse7))))) |v_ULTIMATE.start_entry_point_~kobj~2#1.base_BEFORE_CALL_16|))) (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 .cse4))) (_ bv1 32)) (not (= (let ((.cse11 (select (store |c_old(#memory_int)| |c_ldv_kobject_put_#in~kobj#1.base| (let ((.cse17 (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv15 32))) (.cse16 (bvadd (_ bv14 32) |c_ldv_kobject_put_#in~kobj#1.offset|)) (.cse15 (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv13 32))) (.cse12 (select |c_old(#memory_int)| |c_ldv_kobject_put_#in~kobj#1.base|)) (.cse13 (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv12 32)))) (let ((.cse14 (bvadd (_ bv4294967295 32) (concat (concat (concat (select .cse12 .cse17) (select .cse12 .cse16)) (select .cse12 .cse15)) (select .cse12 .cse13))))) (store (store (store (store .cse12 .cse13 ((_ extract 7 0) .cse14)) .cse15 ((_ extract 15 8) .cse14)) .cse16 ((_ extract 23 16) .cse14)) .cse17 ((_ extract 31 24) .cse14))))) |v_ULTIMATE.start_entry_point_~kobj~2#1.base_BEFORE_CALL_16|))) (concat (concat (concat (select .cse11 .cse1) (select .cse11 .cse2)) (select .cse11 .cse3)) (select .cse11 .cse4))) (_ bv1 32)))))) is different from false [2022-11-02 20:58:12,088 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_~kobj~2#1.base_BEFORE_CALL_16| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_10| (_ BitVec 32))) (let ((.cse1 (bvadd |v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_10| (_ bv15 32))) (.cse2 (bvadd |v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_10| (_ bv14 32))) (.cse3 (bvadd |v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_10| (_ bv13 32))) (.cse4 (bvadd |v_ULTIMATE.start_entry_point_~kobj~2#1.offset_BEFORE_CALL_10| (_ bv12 32))) (.cse10 (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv15 32))) (.cse9 (bvadd (_ bv14 32) |c_ldv_kobject_put_#in~kobj#1.offset|)) (.cse8 (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv13 32))) (.cse6 (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv12 32)))) (or (= (let ((.cse0 (select (store |c_#memory_int| |c_ldv_kobject_put_#in~kobj#1.base| (let ((.cse5 (select |c_#memory_int| |c_ldv_kobject_put_#in~kobj#1.base|))) (let ((.cse7 (bvadd (_ bv4294967295 32) (concat (concat (concat (select .cse5 .cse10) (select .cse5 .cse9)) (select .cse5 .cse8)) (select .cse5 .cse6))))) (store (store (store (store .cse5 .cse6 ((_ extract 7 0) .cse7)) .cse8 ((_ extract 15 8) .cse7)) .cse9 ((_ extract 23 16) .cse7)) .cse10 ((_ extract 31 24) .cse7))))) |v_ULTIMATE.start_entry_point_~kobj~2#1.base_BEFORE_CALL_16|))) (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 .cse4))) (_ bv1 32)) (not (= (let ((.cse11 (select (store |c_old(#memory_int)| |c_ldv_kobject_put_#in~kobj#1.base| (let ((.cse12 (select |c_old(#memory_int)| |c_ldv_kobject_put_#in~kobj#1.base|))) (let ((.cse13 (bvadd (_ bv4294967295 32) (concat (concat (concat (select .cse12 .cse10) (select .cse12 .cse9)) (select .cse12 .cse8)) (select .cse12 .cse6))))) (store (store (store (store .cse12 .cse6 ((_ extract 7 0) .cse13)) .cse8 ((_ extract 15 8) .cse13)) .cse9 ((_ extract 23 16) .cse13)) .cse10 ((_ extract 31 24) .cse13))))) |v_ULTIMATE.start_entry_point_~kobj~2#1.base_BEFORE_CALL_16|))) (concat (concat (concat (select .cse11 .cse1) (select .cse11 .cse2)) (select .cse11 .cse3)) (select .cse11 .cse4))) (_ bv1 32)))))) is different from false [2022-11-02 20:58:13,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1886737489] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:58:13,048 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:58:13,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 44] total 45 [2022-11-02 20:58:13,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436637060] [2022-11-02 20:58:13,048 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:58:13,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-02 20:58:13,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:58:13,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-02 20:58:13,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=3362, Unknown=21, NotChecked=1806, Total=5402 [2022-11-02 20:58:13,050 INFO L87 Difference]: Start difference. First operand 97 states and 99 transitions. Second operand has 45 states, 44 states have (on average 1.6136363636363635) internal successors, (71), 43 states have internal predecessors, (71), 4 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-02 20:58:18,777 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_old(#memory_int)| |c_LDV_INIT_LIST_HEAD_#in~list.base|)) (.cse1 (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|))) (and (exists ((v_ArrVal_2733 (_ BitVec 8)) (v_ArrVal_2937 (_ BitVec 8))) (= (store |c_old(#memory_int)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store .cse0 |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_2733) .cse1 v_ArrVal_2937)) |c_#memory_int|)) (exists ((v_ArrVal_2734 (_ BitVec 8)) (v_ArrVal_2733 (_ BitVec 8))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store .cse0 |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_2733) .cse1 v_ArrVal_2734)))))) is different from true [2022-11-02 20:58:45,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:58:45,038 INFO L93 Difference]: Finished difference Result 101 states and 102 transitions. [2022-11-02 20:58:45,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-02 20:58:45,039 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 1.6136363636363635) internal successors, (71), 43 states have internal predecessors, (71), 4 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 81 [2022-11-02 20:58:45,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:58:45,040 INFO L225 Difference]: With dead ends: 101 [2022-11-02 20:58:45,040 INFO L226 Difference]: Without dead ends: 97 [2022-11-02 20:58:45,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 172 SyntacticMatches, 2 SemanticMatches, 99 ConstructedPredicates, 15 IntricatePredicates, 0 DeprecatedPredicates, 1716 ImplicationChecksByTransitivity, 81.8s TimeCoverageRelationStatistics Valid=519, Invalid=6828, Unknown=23, NotChecked=2730, Total=10100 [2022-11-02 20:58:45,044 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 113 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 1540 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 1816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 252 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:58:45,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 1202 Invalid, 1816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1540 Invalid, 0 Unknown, 252 Unchecked, 5.5s Time] [2022-11-02 20:58:45,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-11-02 20:58:45,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2022-11-02 20:58:45,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 85 states have (on average 1.0588235294117647) internal successors, (90), 88 states have internal predecessors, (90), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-02 20:58:45,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2022-11-02 20:58:45,048 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 81 [2022-11-02 20:58:45,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:58:45,048 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions. [2022-11-02 20:58:45,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 1.6136363636363635) internal successors, (71), 43 states have internal predecessors, (71), 4 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-02 20:58:45,049 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions. [2022-11-02 20:58:45,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-02 20:58:45,050 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:58:45,050 INFO L195 NwaCegarLoop]: trace histogram [16, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:58:45,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-02 20:58:45,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (33)] Ended with exit code 0 [2022-11-02 20:58:45,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt [2022-11-02 20:58:45,474 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_kobject_putErr9ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-02 20:58:45,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:45,474 INFO L85 PathProgramCache]: Analyzing trace with hash 2126857693, now seen corresponding path program 1 times [2022-11-02 20:58:45,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:58:45,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [250103200] [2022-11-02 20:58:45,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:45,475 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:58:45,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:58:45,476 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:58:45,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-02 20:58:46,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:46,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 164 conjunts are in the unsatisfiable core [2022-11-02 20:58:46,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:58:46,469 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 11 treesize of output 7 [2022-11-02 20:58:46,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:46,529 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 20:58:46,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:46,598 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 21 [2022-11-02 20:58:46,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:46,667 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 21 [2022-11-02 20:58:46,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:46,754 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 21 [2022-11-02 20:58:46,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:46,835 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 20:58:46,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:46,920 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 21 [2022-11-02 20:58:46,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:46,994 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 20:58:47,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:47,077 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 20:58:47,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:47,171 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 20:58:47,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:47,277 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 21 [2022-11-02 20:58:47,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:47,360 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 20:58:47,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:47,445 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 20:58:47,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:47,539 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 21 [2022-11-02 20:58:47,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:47,637 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 21 [2022-11-02 20:58:47,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:47,733 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 20:58:48,152 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-02 20:58:54,410 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3169 (_ BitVec 32)) (v_ArrVal_3172 (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.offset)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.offset)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_3169) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_3172)) |c_#memory_$Pointer$.offset|)) is different from true [2022-11-02 20:58:54,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:54,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:54,437 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2022-11-02 20:58:54,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:54,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:54,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:54,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:54,751 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-02 20:58:57,194 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3179 (_ BitVec 32)) (v_ArrVal_3178 (_ BitVec 32)) (v_ArrVal_3180 (_ BitVec 32)) (v_ArrVal_3181 (_ BitVec 32))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_ldv_kobject_put_#in~kobj#1.base| (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_ldv_kobject_put_#in~kobj#1.base|) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv12 32)) v_ArrVal_3180) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv13 32)) v_ArrVal_3181) (bvadd (_ bv14 32) |c_ldv_kobject_put_#in~kobj#1.offset|) v_ArrVal_3178) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv15 32)) v_ArrVal_3179)))) is different from true [2022-11-02 20:58:57,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:57,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:57,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:57,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:57,275 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-02 20:58:57,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:57,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:57,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:57,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:57,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:57,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:57,601 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 45 [2022-11-02 20:58:57,794 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 15 treesize of output 7 [2022-11-02 20:58:57,939 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-02 20:58:57,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:59:00,154 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:59:00,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [250103200] [2022-11-02 20:59:00,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [250103200] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:00,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [951340699] [2022-11-02 20:59:00,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:00,155 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-02 20:59:00,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/cvc4 [2022-11-02 20:59:00,156 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-02 20:59:00,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2022-11-02 20:59:01,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:01,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 161 conjunts are in the unsatisfiable core [2022-11-02 20:59:01,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:01,473 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 11 treesize of output 7 [2022-11-02 20:59:01,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:01,499 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 20:59:01,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:01,543 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 21 [2022-11-02 20:59:01,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:01,563 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 20:59:01,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:01,597 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 20:59:01,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:01,621 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 21 [2022-11-02 20:59:01,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:01,653 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 20:59:01,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:01,692 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 21 [2022-11-02 20:59:01,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:01,723 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 21 [2022-11-02 20:59:01,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:01,756 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 21 [2022-11-02 20:59:01,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:01,802 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 21 [2022-11-02 20:59:01,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:01,823 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 20:59:01,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:01,862 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 21 [2022-11-02 20:59:01,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:01,887 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 20:59:01,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:01,912 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 20:59:01,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:01,935 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 20:59:02,019 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-02 20:59:04,213 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3411 (_ BitVec 32))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.offset)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| |c_LDV_INIT_LIST_HEAD_#in~list.offset|) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_3411)))) is different from true [2022-11-02 20:59:04,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:04,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:04,235 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-02 20:59:04,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:04,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:04,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:04,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:04,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:04,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:04,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:04,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:04,990 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:59:04,990 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 15 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 57 [2022-11-02 20:59:07,428 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3421 (_ BitVec 32)) (v_ArrVal_3420 (_ BitVec 32)) (v_ArrVal_3418 (_ BitVec 32)) (v_ArrVal_3419 (_ BitVec 32))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_ldv_kobject_put_#in~kobj#1.base| (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_ldv_kobject_put_#in~kobj#1.base|) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv12 32)) v_ArrVal_3420) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv13 32)) v_ArrVal_3421) (bvadd (_ bv14 32) |c_ldv_kobject_put_#in~kobj#1.offset|) v_ArrVal_3418) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv15 32)) v_ArrVal_3419)))) is different from true [2022-11-02 20:59:07,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:07,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:07,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:07,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:07,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:07,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:07,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:07,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:07,521 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:59:07,521 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 15 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 57 [2022-11-02 20:59:08,032 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:59:08,032 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 15 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 49 [2022-11-02 20:59:08,334 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:59:08,334 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 26 [2022-11-02 20:59:08,641 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-02 20:59:08,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:59:12,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [951340699] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:12,702 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:59:12,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 46] total 60 [2022-11-02 20:59:12,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706035833] [2022-11-02 20:59:12,703 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:59:12,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-02 20:59:12,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:59:12,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-02 20:59:12,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=5003, Unknown=5, NotChecked=580, Total=5852 [2022-11-02 20:59:12,705 INFO L87 Difference]: Start difference. First operand 97 states and 98 transitions. Second operand has 61 states, 58 states have (on average 1.896551724137931) internal successors, (110), 57 states have internal predecessors, (110), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-02 20:59:22,344 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_old(#memory_$Pointer$.offset)| |c_LDV_INIT_LIST_HEAD_#in~list.base|)) (.cse1 (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|))) (and (exists ((v_ArrVal_3169 (_ BitVec 32)) (v_ArrVal_3172 (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.offset)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store .cse0 |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_3169) .cse1 v_ArrVal_3172)) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_3411 (_ BitVec 32))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store .cse0 |c_LDV_INIT_LIST_HEAD_#in~list.offset| |c_LDV_INIT_LIST_HEAD_#in~list.offset|) .cse1 v_ArrVal_3411)))))) is different from true [2022-11-02 20:59:34,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:34,676 INFO L93 Difference]: Finished difference Result 96 states and 97 transitions. [2022-11-02 20:59:34,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-02 20:59:34,679 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 58 states have (on average 1.896551724137931) internal successors, (110), 57 states have internal predecessors, (110), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 82 [2022-11-02 20:59:34,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:34,679 INFO L225 Difference]: With dead ends: 96 [2022-11-02 20:59:34,679 INFO L226 Difference]: Without dead ends: 96 [2022-11-02 20:59:34,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 2820 ImplicationChecksByTransitivity, 33.7s TimeCoverageRelationStatistics Valid=554, Invalid=10171, Unknown=7, NotChecked=1040, Total=11772 [2022-11-02 20:59:34,683 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 206 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 2181 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 2660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 420 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:34,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 1185 Invalid, 2660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2181 Invalid, 0 Unknown, 420 Unchecked, 9.2s Time] [2022-11-02 20:59:34,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-11-02 20:59:34,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2022-11-02 20:59:34,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 85 states have (on average 1.0470588235294118) internal successors, (89), 87 states have internal predecessors, (89), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-02 20:59:34,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2022-11-02 20:59:34,688 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 82 [2022-11-02 20:59:34,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:34,688 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2022-11-02 20:59:34,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 58 states have (on average 1.896551724137931) internal successors, (110), 57 states have internal predecessors, (110), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-02 20:59:34,689 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2022-11-02 20:59:34,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-02 20:59:34,690 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:34,690 INFO L195 NwaCegarLoop]: trace histogram [16, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:59:34,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:34,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (35)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:35,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt [2022-11-02 20:59:35,106 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ldv_kobject_putErr10ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-02 20:59:35,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:35,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1508079198, now seen corresponding path program 1 times [2022-11-02 20:59:35,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:59:35,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1229165904] [2022-11-02 20:59:35,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:35,108 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:59:35,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:59:35,110 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:59:35,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-02 20:59:35,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:35,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 164 conjunts are in the unsatisfiable core [2022-11-02 20:59:35,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:36,053 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 11 treesize of output 7 [2022-11-02 20:59:36,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:36,122 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 21 [2022-11-02 20:59:36,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:36,189 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 20:59:36,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:36,260 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 21 [2022-11-02 20:59:36,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:36,342 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 20:59:36,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:36,454 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 21 [2022-11-02 20:59:36,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:36,549 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 20:59:36,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:36,649 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 21 [2022-11-02 20:59:36,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:36,757 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 20:59:36,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:36,847 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 21 [2022-11-02 20:59:36,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:36,960 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 20:59:37,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:37,077 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 20:59:37,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:37,187 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 20:59:37,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:37,292 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 20:59:37,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:37,404 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 20:59:37,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:37,518 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 20:59:37,894 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-02 20:59:44,196 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3650 (_ BitVec 32)) (v_ArrVal_3651 (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.base)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_3650) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_3651)) |c_#memory_$Pointer$.base|)) is different from true [2022-11-02 20:59:44,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:44,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:44,213 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2022-11-02 20:59:44,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:44,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:44,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:44,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:44,570 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-02 20:59:47,108 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3661 (_ BitVec 32)) (v_ArrVal_3662 (_ BitVec 32)) (v_ArrVal_3658 (_ BitVec 32)) (v_ArrVal_3659 (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_ldv_kobject_put_#in~kobj#1.base| (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_ldv_kobject_put_#in~kobj#1.base|) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv12 32)) v_ArrVal_3658) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv13 32)) v_ArrVal_3659) (bvadd (_ bv14 32) |c_ldv_kobject_put_#in~kobj#1.offset|) v_ArrVal_3661) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv15 32)) v_ArrVal_3662)) |c_#memory_$Pointer$.base|)) is different from true [2022-11-02 20:59:47,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:47,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:47,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:47,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:47,217 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-02 20:59:47,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:47,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:47,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:47,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:47,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:47,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:47,582 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 45 [2022-11-02 20:59:47,789 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 15 treesize of output 7 [2022-11-02 20:59:48,088 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-02 20:59:48,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:59:50,539 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:59:50,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1229165904] [2022-11-02 20:59:50,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1229165904] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:50,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1013703552] [2022-11-02 20:59:50,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:50,539 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-02 20:59:50,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/cvc4 [2022-11-02 20:59:50,540 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-02 20:59:50,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2022-11-02 20:59:51,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:51,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 160 conjunts are in the unsatisfiable core [2022-11-02 20:59:51,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:51,890 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 14 treesize of output 10 [2022-11-02 20:59:51,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:51,928 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 21 [2022-11-02 20:59:51,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:51,982 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 21 [2022-11-02 20:59:52,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:52,016 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 21 [2022-11-02 20:59:52,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:52,047 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 21 [2022-11-02 20:59:52,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:52,084 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 20:59:52,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:52,130 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 21 [2022-11-02 20:59:52,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:52,167 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 20:59:52,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:52,198 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 20:59:52,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:52,233 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 21 [2022-11-02 20:59:52,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:52,267 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 21 [2022-11-02 20:59:52,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:52,288 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 21 [2022-11-02 20:59:52,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:52,327 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 21 [2022-11-02 20:59:52,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:52,351 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 20:59:52,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:52,380 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 20:59:52,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:52,412 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 20:59:52,502 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-02 20:59:56,671 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3650 (_ BitVec 32)) (v_ArrVal_3891 (_ BitVec 32))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.base)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_3650) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_3891)))) is different from true [2022-11-02 20:59:56,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:56,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:56,692 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2022-11-02 20:59:56,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:56,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:56,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:56,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:56,792 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-02 20:59:58,957 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3902 (_ BitVec 32)) (v_ArrVal_3900 (_ BitVec 32)) (v_ArrVal_3901 (_ BitVec 32)) (v_ArrVal_3898 (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_ldv_kobject_put_#in~kobj#1.base| (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_ldv_kobject_put_#in~kobj#1.base|) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv12 32)) v_ArrVal_3902) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv13 32)) v_ArrVal_3900) (bvadd (_ bv14 32) |c_ldv_kobject_put_#in~kobj#1.offset|) v_ArrVal_3901) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv15 32)) v_ArrVal_3898)) |c_#memory_$Pointer$.base|)) is different from true [2022-11-02 20:59:59,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:59,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:59,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:59,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:59,046 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-02 20:59:59,276 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 39 [2022-11-02 20:59:59,558 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:59:59,558 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-02 20:59:59,830 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-02 20:59:59,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:00:02,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1013703552] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:00:02,797 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:00:02,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 47] total 53 [2022-11-02 21:00:02,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006721637] [2022-11-02 21:00:02,798 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:00:02,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-11-02 21:00:02,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:02,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-11-02 21:00:02,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=3450, Unknown=5, NotChecked=484, Total=4160 [2022-11-02 21:00:02,800 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand has 53 states, 52 states have (on average 1.8269230769230769) internal successors, (95), 50 states have internal predecessors, (95), 4 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-02 21:00:09,596 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_old(#memory_$Pointer$.base)| |c_LDV_INIT_LIST_HEAD_#in~list.base|)) (.cse1 (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|))) (and (exists ((v_ArrVal_3650 (_ BitVec 32)) (v_ArrVal_3891 (_ BitVec 32))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store .cse0 |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_3650) .cse1 v_ArrVal_3891)))) (exists ((v_ArrVal_3650 (_ BitVec 32)) (v_ArrVal_3651 (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store .cse0 |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_3650) .cse1 v_ArrVal_3651)) |c_#memory_$Pointer$.base|)))) is different from true [2022-11-02 21:00:18,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:18,581 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2022-11-02 21:00:18,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-02 21:00:18,582 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 1.8269230769230769) internal successors, (95), 50 states have internal predecessors, (95), 4 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 83 [2022-11-02 21:00:18,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:18,583 INFO L225 Difference]: With dead ends: 92 [2022-11-02 21:00:18,583 INFO L226 Difference]: Without dead ends: 91 [2022-11-02 21:00:18,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 137 SyntacticMatches, 2 SemanticMatches, 80 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 1612 ImplicationChecksByTransitivity, 31.5s TimeCoverageRelationStatistics Valid=392, Invalid=5473, Unknown=7, NotChecked=770, Total=6642 [2022-11-02 21:00:18,586 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 132 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 1639 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 2078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 389 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:18,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 796 Invalid, 2078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1639 Invalid, 0 Unknown, 389 Unchecked, 5.7s Time] [2022-11-02 21:00:18,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-11-02 21:00:18,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2022-11-02 21:00:18,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 82 states have (on average 1.0121951219512195) internal successors, (83), 82 states have internal predecessors, (83), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-02 21:00:18,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2022-11-02 21:00:18,589 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 83 [2022-11-02 21:00:18,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:18,589 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2022-11-02 21:00:18,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 1.8269230769230769) internal successors, (95), 50 states have internal predecessors, (95), 4 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-02 21:00:18,590 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2022-11-02 21:00:18,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-02 21:00:18,590 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:18,591 INFO L195 NwaCegarLoop]: trace histogram [16, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:00:18,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (37)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:18,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:19,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:19,000 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-02 21:00:19,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:19,001 INFO L85 PathProgramCache]: Analyzing trace with hash 102095468, now seen corresponding path program 1 times [2022-11-02 21:00:19,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:19,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1681710760] [2022-11-02 21:00:19,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:19,002 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:19,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:19,003 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:19,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-02 21:00:19,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:19,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-02 21:00:19,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:20,245 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 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-02 21:00:20,787 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-11-02 21:00:20,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:00:25,890 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:25,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1681710760] [2022-11-02 21:00:25,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1681710760] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:00:25,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1490283782] [2022-11-02 21:00:25,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:25,891 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-02 21:00:25,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/cvc4 [2022-11-02 21:00:25,892 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-02 21:00:25,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38321c5-0678-4a3e-8d1e-3cd0ee2e9bb8/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2022-11-02 21:00:27,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:27,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-02 21:00:27,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:28,098 INFO L356 Elim1Store]: treesize reduction 23, result has 32.4 percent of original size [2022-11-02 21:00:28,098 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 25