./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test14_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e04fb08f 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_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test14_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8 --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 12d7333ecc5650929161cd50df756e255d5b3c2b6fe8799d2d7337cf38a3a1cb --- 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-e04fb08 [2022-11-16 12:13:18,196 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:13:18,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:13:18,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:13:18,242 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:13:18,246 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:13:18,248 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:13:18,249 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:13:18,251 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:13:18,251 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:13:18,252 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:13:18,253 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:13:18,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:13:18,254 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:13:18,255 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:13:18,256 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:13:18,257 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:13:18,260 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:13:18,263 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:13:18,270 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:13:18,274 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:13:18,278 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:13:18,283 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:13:18,284 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:13:18,286 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:13:18,287 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:13:18,287 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:13:18,288 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:13:18,288 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:13:18,289 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:13:18,289 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:13:18,290 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:13:18,291 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:13:18,291 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:13:18,292 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:13:18,292 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:13:18,293 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:13:18,293 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:13:18,294 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:13:18,299 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:13:18,301 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:13:18,301 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-16 12:13:18,341 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:13:18,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:13:18,342 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:13:18,342 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:13:18,343 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:13:18,343 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:13:18,344 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:13:18,344 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:13:18,344 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:13:18,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:13:18,346 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:13:18,346 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:13:18,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:13:18,346 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:13:18,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:13:18,347 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 12:13:18,347 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 12:13:18,347 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 12:13:18,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:13:18,347 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 12:13:18,347 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:13:18,348 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:13:18,348 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:13:18,348 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:13:18,348 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:13:18,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:13:18,350 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:13:18,350 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:13:18,350 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:13:18,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:13:18,351 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_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12d7333ecc5650929161cd50df756e255d5b3c2b6fe8799d2d7337cf38a3a1cb [2022-11-16 12:13:18,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:13:18,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:13:18,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:13:18,686 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:13:18,686 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:13:18,688 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/ldv-memsafety/memleaks_test14_3.i [2022-11-16 12:13:18,757 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/data/2343406d3/ad76e510ad7348358027b85378fc1895/FLAGd37497efe [2022-11-16 12:13:19,410 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:13:19,411 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/sv-benchmarks/c/ldv-memsafety/memleaks_test14_3.i [2022-11-16 12:13:19,425 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/data/2343406d3/ad76e510ad7348358027b85378fc1895/FLAGd37497efe [2022-11-16 12:13:19,664 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/data/2343406d3/ad76e510ad7348358027b85378fc1895 [2022-11-16 12:13:19,667 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:13:19,669 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:13:19,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:13:19,671 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:13:19,685 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:13:19,686 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:13:19" (1/1) ... [2022-11-16 12:13:19,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c101d65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:19, skipping insertion in model container [2022-11-16 12:13:19,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:13:19" (1/1) ... [2022-11-16 12:13:19,697 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:13:19,742 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:13:20,299 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:13:20,321 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) [2022-11-16 12:13:20,321 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@54587e2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:20, skipping insertion in model container [2022-11-16 12:13:20,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:13:20,323 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-16 12:13:20,327 INFO L158 Benchmark]: Toolchain (without parser) took 655.77ms. Allocated memory is still 109.1MB. Free memory was 67.6MB in the beginning and 79.7MB in the end (delta: -12.1MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. [2022-11-16 12:13:20,334 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 109.1MB. Free memory is still 85.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:13:20,336 INFO L158 Benchmark]: CACSL2BoogieTranslator took 652.42ms. Allocated memory is still 109.1MB. Free memory was 67.4MB in the beginning and 79.7MB in the end (delta: -12.3MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. [2022-11-16 12:13:20,340 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 109.1MB. Free memory is still 85.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 652.42ms. Allocated memory is still 109.1MB. Free memory was 67.4MB in the beginning and 79.7MB in the end (delta: -12.3MB). Peak memory consumption was 8.8MB. 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_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test14_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8 --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 12d7333ecc5650929161cd50df756e255d5b3c2b6fe8799d2d7337cf38a3a1cb --- 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-e04fb08 [2022-11-16 12:13:22,864 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:13:22,867 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:13:22,894 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:13:22,895 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:13:22,896 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:13:22,898 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:13:22,901 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:13:22,904 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:13:22,905 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:13:22,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:13:22,908 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:13:22,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:13:22,911 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:13:22,912 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:13:22,914 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:13:22,915 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:13:22,916 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:13:22,918 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:13:22,921 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:13:22,923 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:13:22,925 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:13:22,926 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:13:22,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:13:22,931 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:13:22,932 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:13:22,933 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:13:22,934 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:13:22,935 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:13:22,936 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:13:22,937 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:13:22,938 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:13:22,939 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:13:22,940 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:13:22,942 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:13:22,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:13:22,944 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:13:22,944 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:13:22,945 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:13:22,946 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:13:22,947 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:13:22,948 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-16 12:13:22,977 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:13:22,978 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:13:22,978 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:13:22,979 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:13:22,980 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:13:22,980 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:13:22,981 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:13:22,982 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:13:22,982 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:13:22,982 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:13:22,983 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:13:22,983 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:13:22,984 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:13:22,984 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:13:22,984 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:13:22,985 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 12:13:22,985 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 12:13:22,985 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 12:13:22,986 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:13:22,986 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 12:13:22,986 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 12:13:22,987 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 12:13:22,987 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:13:22,988 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:13:22,988 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:13:22,988 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:13:22,989 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:13:22,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:13:22,990 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:13:22,990 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:13:22,990 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-16 12:13:22,991 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 12:13:22,991 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 12:13:22,992 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_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12d7333ecc5650929161cd50df756e255d5b3c2b6fe8799d2d7337cf38a3a1cb [2022-11-16 12:13:23,453 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:13:23,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:13:23,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:13:23,488 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:13:23,491 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:13:23,492 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/ldv-memsafety/memleaks_test14_3.i [2022-11-16 12:13:23,574 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/data/7246a1fae/0e89f1d767fe4ec7bf42eac043b64fd8/FLAGe2b7c5ee9 [2022-11-16 12:13:24,275 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:13:24,276 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/sv-benchmarks/c/ldv-memsafety/memleaks_test14_3.i [2022-11-16 12:13:24,301 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/data/7246a1fae/0e89f1d767fe4ec7bf42eac043b64fd8/FLAGe2b7c5ee9 [2022-11-16 12:13:24,519 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/data/7246a1fae/0e89f1d767fe4ec7bf42eac043b64fd8 [2022-11-16 12:13:24,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:13:24,523 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:13:24,526 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:13:24,527 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:13:24,536 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:13:24,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:13:24" (1/1) ... [2022-11-16 12:13:24,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8d1e9b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:24, skipping insertion in model container [2022-11-16 12:13:24,539 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:13:24" (1/1) ... [2022-11-16 12:13:24,546 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:13:24,584 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:13:25,016 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:13:25,040 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-16 12:13:25,062 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:13:25,147 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:13:25,158 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:13:25,242 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:13:25,326 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:13:25,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:25 WrapperNode [2022-11-16 12:13:25,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:13:25,329 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:13:25,330 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:13:25,330 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:13:25,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:25" (1/1) ... [2022-11-16 12:13:25,378 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:25" (1/1) ... [2022-11-16 12:13:25,425 INFO L138 Inliner]: procedures = 168, calls = 79, calls flagged for inlining = 21, calls inlined = 6, statements flattened = 53 [2022-11-16 12:13:25,426 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:13:25,427 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:13:25,427 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:13:25,427 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:13:25,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:25" (1/1) ... [2022-11-16 12:13:25,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:25" (1/1) ... [2022-11-16 12:13:25,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:25" (1/1) ... [2022-11-16 12:13:25,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:25" (1/1) ... [2022-11-16 12:13:25,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:25" (1/1) ... [2022-11-16 12:13:25,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:25" (1/1) ... [2022-11-16 12:13:25,470 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:25" (1/1) ... [2022-11-16 12:13:25,472 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:25" (1/1) ... [2022-11-16 12:13:25,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:13:25,476 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:13:25,477 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:13:25,477 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:13:25,478 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:25" (1/1) ... [2022-11-16 12:13:25,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:13:25,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:13:25,541 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:13:25,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:13:25,595 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2022-11-16 12:13:25,595 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2022-11-16 12:13:25,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-16 12:13:25,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-16 12:13:25,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2022-11-16 12:13:25,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2022-11-16 12:13:25,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:13:25,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:13:25,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:13:25,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 12:13:25,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 12:13:25,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:13:25,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 12:13:25,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2022-11-16 12:13:25,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2022-11-16 12:13:25,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:13:25,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:13:25,761 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:13:25,763 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:13:26,253 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:13:26,269 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:13:26,269 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 12:13:26,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:13:26 BoogieIcfgContainer [2022-11-16 12:13:26,272 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:13:26,274 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:13:26,274 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:13:26,278 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:13:26,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:13:24" (1/3) ... [2022-11-16 12:13:26,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5371ca75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:13:26, skipping insertion in model container [2022-11-16 12:13:26,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:25" (2/3) ... [2022-11-16 12:13:26,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5371ca75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:13:26, skipping insertion in model container [2022-11-16 12:13:26,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:13:26" (3/3) ... [2022-11-16 12:13:26,281 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test14_3.i [2022-11-16 12:13:26,302 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:13:26,302 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-11-16 12:13:26,357 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:13:26,364 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;@63c890d7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:13:26,364 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-11-16 12:13:26,369 INFO L276 IsEmpty]: Start isEmpty. Operand has 73 states, 38 states have (on average 1.7894736842105263) internal successors, (68), 65 states have internal predecessors, (68), 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) [2022-11-16 12:13:26,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 12:13:26,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:26,379 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:26,380 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:13:26,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:26,386 INFO L85 PathProgramCache]: Analyzing trace with hash 57943215, now seen corresponding path program 1 times [2022-11-16 12:13:26,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:13:26,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [438869235] [2022-11-16 12:13:26,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:26,402 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:13:26,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:13:26,408 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:13:26,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-16 12:13:26,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:26,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 12:13:26,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:26,721 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:13:26,791 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (= (store |c_old(#valid)| |ldv_malloc_#res.base| (_ bv1 1)) |c_#valid|)) is different from true [2022-11-16 12:13:26,858 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-16 12:13:26,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 12:13:26,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:26,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:13:26,945 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:13:26,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [438869235] [2022-11-16 12:13:26,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [438869235] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:26,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:26,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:13:26,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036054800] [2022-11-16 12:13:26,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:26,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:13:26,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:13:27,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:13:27,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=22, Unknown=1, NotChecked=8, Total=42 [2022-11-16 12:13:27,011 INFO L87 Difference]: Start difference. First operand has 73 states, 38 states have (on average 1.7894736842105263) internal successors, (68), 65 states have internal predecessors, (68), 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) 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, (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) [2022-11-16 12:13:27,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:27,502 INFO L93 Difference]: Finished difference Result 83 states and 87 transitions. [2022-11-16 12:13:27,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:13:27,505 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, (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 12 [2022-11-16 12:13:27,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:27,515 INFO L225 Difference]: With dead ends: 83 [2022-11-16 12:13:27,515 INFO L226 Difference]: Without dead ends: 81 [2022-11-16 12:13:27,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=38, Unknown=1, NotChecked=12, Total=72 [2022-11-16 12:13:27,531 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 59 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 79 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:27,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 97 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 211 Invalid, 0 Unknown, 79 Unchecked, 0.4s Time] [2022-11-16 12:13:27,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-16 12:13:27,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 70. [2022-11-16 12:13:27,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 37 states have (on average 1.7297297297297298) internal successors, (64), 62 states have internal predecessors, (64), 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) [2022-11-16 12:13:27,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 72 transitions. [2022-11-16 12:13:27,599 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 72 transitions. Word has length 12 [2022-11-16 12:13:27,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:27,600 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 72 transitions. [2022-11-16 12:13:27,600 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, (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) [2022-11-16 12:13:27,600 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 72 transitions. [2022-11-16 12:13:27,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 12:13:27,601 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:27,601 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:27,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:13:27,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:13:27,814 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:13:27,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:27,818 INFO L85 PathProgramCache]: Analyzing trace with hash 57943216, now seen corresponding path program 1 times [2022-11-16 12:13:27,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:13:27,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1892571177] [2022-11-16 12:13:27,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:27,819 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:13:27,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:13:27,824 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:13:27,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-16 12:13:27,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:27,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 12:13:27,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:27,979 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:13:27,985 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:13:28,114 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_13 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_13))))) is different from true [2022-11-16 12:13:28,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:28,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 12:13:28,215 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:13:28,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:13:28,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:28,323 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:13:28,323 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:13:28,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1892571177] [2022-11-16 12:13:28,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1892571177] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:28,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:28,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:13:28,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458892640] [2022-11-16 12:13:28,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:28,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:13:28,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:13:28,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:13:28,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=31, Unknown=1, NotChecked=10, Total=56 [2022-11-16 12:13:28,337 INFO L87 Difference]: Start difference. First operand 70 states and 72 transitions. Second operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 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) [2022-11-16 12:13:29,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:29,034 INFO L93 Difference]: Finished difference Result 88 states and 94 transitions. [2022-11-16 12:13:29,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:13:29,035 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 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 12 [2022-11-16 12:13:29,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:29,036 INFO L225 Difference]: With dead ends: 88 [2022-11-16 12:13:29,036 INFO L226 Difference]: Without dead ends: 88 [2022-11-16 12:13:29,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=51, Unknown=1, NotChecked=14, Total=90 [2022-11-16 12:13:29,055 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 80 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 97 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:29,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 128 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 279 Invalid, 0 Unknown, 97 Unchecked, 0.6s Time] [2022-11-16 12:13:29,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-11-16 12:13:29,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 69. [2022-11-16 12:13:29,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 37 states have (on average 1.7027027027027026) internal successors, (63), 61 states have internal predecessors, (63), 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) [2022-11-16 12:13:29,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2022-11-16 12:13:29,073 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 12 [2022-11-16 12:13:29,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:29,074 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2022-11-16 12:13:29,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 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) [2022-11-16 12:13:29,075 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2022-11-16 12:13:29,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 12:13:29,076 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:29,076 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:29,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:13:29,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:13:29,289 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:13:29,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:29,290 INFO L85 PathProgramCache]: Analyzing trace with hash -967961449, now seen corresponding path program 1 times [2022-11-16 12:13:29,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:13:29,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [568994331] [2022-11-16 12:13:29,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:29,292 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:13:29,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:13:29,293 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:13:29,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-16 12:13:29,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:29,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:13:29,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:29,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:29,413 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:13:29,413 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:13:29,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [568994331] [2022-11-16 12:13:29,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [568994331] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:29,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:29,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:13:29,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812048967] [2022-11-16 12:13:29,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:29,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:13:29,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:13:29,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:13:29,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:13:29,424 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 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) [2022-11-16 12:13:29,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:29,469 INFO L93 Difference]: Finished difference Result 95 states and 99 transitions. [2022-11-16 12:13:29,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:13:29,471 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 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 [2022-11-16 12:13:29,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:29,473 INFO L225 Difference]: With dead ends: 95 [2022-11-16 12:13:29,474 INFO L226 Difference]: Without dead ends: 95 [2022-11-16 12:13:29,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:13:29,475 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 21 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:29,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 337 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:13:29,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-11-16 12:13:29,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 73. [2022-11-16 12:13:29,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 40 states have (on average 1.65) internal successors, (66), 64 states have internal predecessors, (66), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-16 12:13:29,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2022-11-16 12:13:29,484 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 11 [2022-11-16 12:13:29,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:29,485 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2022-11-16 12:13:29,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 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) [2022-11-16 12:13:29,485 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2022-11-16 12:13:29,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 12:13:29,486 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:29,486 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:29,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:13:29,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:13:29,699 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:13:29,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:29,700 INFO L85 PathProgramCache]: Analyzing trace with hash -80457768, now seen corresponding path program 1 times [2022-11-16 12:13:29,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:13:29,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [779814389] [2022-11-16 12:13:29,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:29,701 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:13:29,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:13:29,708 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:13:29,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-16 12:13:29,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:29,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:13:29,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:29,793 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:13:29,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:29,855 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:13:29,855 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:13:29,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [779814389] [2022-11-16 12:13:29,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [779814389] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:29,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:29,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:13:29,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892829386] [2022-11-16 12:13:29,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:29,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:13:29,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:13:29,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:13:29,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:13:29,858 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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) [2022-11-16 12:13:30,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:30,277 INFO L93 Difference]: Finished difference Result 96 states and 103 transitions. [2022-11-16 12:13:30,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:13:30,279 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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 [2022-11-16 12:13:30,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:30,280 INFO L225 Difference]: With dead ends: 96 [2022-11-16 12:13:30,281 INFO L226 Difference]: Without dead ends: 96 [2022-11-16 12:13:30,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:13:30,282 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 65 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:30,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 79 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:13:30,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-11-16 12:13:30,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 76. [2022-11-16 12:13:30,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 42 states have (on average 1.6428571428571428) internal successors, (69), 66 states have internal predecessors, (69), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-16 12:13:30,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2022-11-16 12:13:30,296 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 11 [2022-11-16 12:13:30,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:30,296 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2022-11-16 12:13:30,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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) [2022-11-16 12:13:30,297 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2022-11-16 12:13:30,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 12:13:30,299 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:30,300 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:30,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:13:30,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:13:30,517 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:13:30,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:30,517 INFO L85 PathProgramCache]: Analyzing trace with hash -80457767, now seen corresponding path program 1 times [2022-11-16 12:13:30,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:13:30,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1647469538] [2022-11-16 12:13:30,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:30,518 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:13:30,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:13:30,519 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:13:30,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-16 12:13:30,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:30,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:13:30,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:30,636 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:13:30,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:30,749 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:13:30,750 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:13:30,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1647469538] [2022-11-16 12:13:30,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1647469538] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:30,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:30,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:13:30,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490519651] [2022-11-16 12:13:30,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:30,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:13:30,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:13:30,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:13:30,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:13:30,752 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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) [2022-11-16 12:13:31,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:31,144 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2022-11-16 12:13:31,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:13:31,145 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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 [2022-11-16 12:13:31,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:31,146 INFO L225 Difference]: With dead ends: 93 [2022-11-16 12:13:31,146 INFO L226 Difference]: Without dead ends: 93 [2022-11-16 12:13:31,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:13:31,147 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 68 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:31,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 94 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:13:31,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-16 12:13:31,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 76. [2022-11-16 12:13:31,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 42 states have (on average 1.619047619047619) internal successors, (68), 66 states have internal predecessors, (68), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-16 12:13:31,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2022-11-16 12:13:31,154 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 11 [2022-11-16 12:13:31,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:31,155 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2022-11-16 12:13:31,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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) [2022-11-16 12:13:31,155 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2022-11-16 12:13:31,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 12:13:31,156 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:31,156 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:31,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:13:31,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:13:31,369 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:13:31,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:31,369 INFO L85 PathProgramCache]: Analyzing trace with hash -390474800, now seen corresponding path program 1 times [2022-11-16 12:13:31,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:13:31,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2047379764] [2022-11-16 12:13:31,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:31,370 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:13:31,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:13:31,371 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:13:31,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-16 12:13:31,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:31,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-16 12:13:31,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:31,517 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:13:31,526 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:13:31,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-16 12:13:31,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 12:13:31,684 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_alloc_14_~list#1.base_BEFORE_CALL_5| (_ BitVec 32))) (and (= (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_alloc_14_~list#1.base_BEFORE_CALL_5|) (_ bv0 32)) (_ bv0 32)) (= |v_ULTIMATE.start_alloc_14_~list#1.base_BEFORE_CALL_5| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_alloc_14_~list#1.base_BEFORE_CALL_5|) (_ bv0 32))))) (exists ((v_ArrVal_30 (_ BitVec 32)) (|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_30) |c_#length|)))) is different from true [2022-11-16 12:13:31,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:31,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 12:13:31,823 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:13:31,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:13:32,030 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:13:32,038 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:13:32,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:32,142 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:13:32,142 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:13:32,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2047379764] [2022-11-16 12:13:32,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2047379764] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:32,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:32,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:13:32,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407212317] [2022-11-16 12:13:32,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:32,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 12:13:32,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:13:32,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 12:13:32,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=73, Unknown=1, NotChecked=16, Total=110 [2022-11-16 12:13:32,144 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand has 11 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:13:32,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:32,787 INFO L93 Difference]: Finished difference Result 94 states and 97 transitions. [2022-11-16 12:13:32,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:13:32,788 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-11-16 12:13:32,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:32,789 INFO L225 Difference]: With dead ends: 94 [2022-11-16 12:13:32,789 INFO L226 Difference]: Without dead ends: 94 [2022-11-16 12:13:32,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=125, Unknown=1, NotChecked=22, Total=182 [2022-11-16 12:13:32,791 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 30 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 143 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:32,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 317 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 196 Invalid, 0 Unknown, 143 Unchecked, 0.5s Time] [2022-11-16 12:13:32,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-16 12:13:32,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 86. [2022-11-16 12:13:32,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 50 states have (on average 1.66) internal successors, (83), 74 states have internal predecessors, (83), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-11-16 12:13:32,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 96 transitions. [2022-11-16 12:13:32,798 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 96 transitions. Word has length 15 [2022-11-16 12:13:32,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:32,798 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 96 transitions. [2022-11-16 12:13:32,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:13:32,798 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 96 transitions. [2022-11-16 12:13:32,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 12:13:32,799 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:32,799 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:32,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:13:32,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:13:33,000 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:13:33,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:33,005 INFO L85 PathProgramCache]: Analyzing trace with hash -390474801, now seen corresponding path program 1 times [2022-11-16 12:13:33,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:13:33,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [305806935] [2022-11-16 12:13:33,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:33,006 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:13:33,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:13:33,011 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:13:33,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-16 12:13:33,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:33,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 12:13:33,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:35,119 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_alloc_14_~list#1.offset_BEFORE_CALL_5| (_ BitVec 32)) (|v_ULTIMATE.start_alloc_14_~list#1.base_BEFORE_CALL_7| (_ BitVec 32))) (= |v_ULTIMATE.start_alloc_14_~list#1.base_BEFORE_CALL_7| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_alloc_14_~list#1.base_BEFORE_CALL_7|) |v_ULTIMATE.start_alloc_14_~list#1.offset_BEFORE_CALL_5|))) is different from true [2022-11-16 12:13:35,194 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:13:35,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:35,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:13:35,241 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:13:35,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [305806935] [2022-11-16 12:13:35,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [305806935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:35,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:35,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:13:35,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607883363] [2022-11-16 12:13:35,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:35,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:13:35,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:13:35,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:13:35,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=44, Unknown=1, NotChecked=12, Total=72 [2022-11-16 12:13:35,243 INFO L87 Difference]: Start difference. First operand 86 states and 96 transitions. Second operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:13:35,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:35,666 INFO L93 Difference]: Finished difference Result 93 states and 96 transitions. [2022-11-16 12:13:35,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:13:35,666 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-11-16 12:13:35,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:35,667 INFO L225 Difference]: With dead ends: 93 [2022-11-16 12:13:35,667 INFO L226 Difference]: Without dead ends: 93 [2022-11-16 12:13:35,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=29, Invalid=84, Unknown=1, NotChecked=18, Total=132 [2022-11-16 12:13:35,668 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 36 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 104 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:35,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 297 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 170 Invalid, 0 Unknown, 104 Unchecked, 0.4s Time] [2022-11-16 12:13:35,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-16 12:13:35,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 86. [2022-11-16 12:13:35,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 50 states have (on average 1.64) internal successors, (82), 74 states have internal predecessors, (82), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-11-16 12:13:35,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2022-11-16 12:13:35,676 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 15 [2022-11-16 12:13:35,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:35,677 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2022-11-16 12:13:35,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:13:35,677 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2022-11-16 12:13:35,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 12:13:35,678 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:35,678 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:35,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:13:35,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:13:35,892 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:13:35,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:35,893 INFO L85 PathProgramCache]: Analyzing trace with hash 2107541137, now seen corresponding path program 1 times [2022-11-16 12:13:35,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:13:35,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [890198222] [2022-11-16 12:13:35,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:35,893 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:13:35,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:13:35,895 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:13:35,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-16 12:13:35,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:35,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:13:35,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:36,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:36,037 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:13:36,037 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:13:36,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [890198222] [2022-11-16 12:13:36,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [890198222] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:36,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:36,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:13:36,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802894191] [2022-11-16 12:13:36,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:36,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:13:36,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:13:36,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:13:36,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:13:36,039 INFO L87 Difference]: Start difference. First operand 86 states and 95 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:13:36,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:36,066 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2022-11-16 12:13:36,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:13:36,067 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-11-16 12:13:36,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:36,068 INFO L225 Difference]: With dead ends: 90 [2022-11-16 12:13:36,068 INFO L226 Difference]: Without dead ends: 90 [2022-11-16 12:13:36,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:13:36,069 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 19 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:36,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 272 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:13:36,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-11-16 12:13:36,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 73. [2022-11-16 12:13:36,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 42 states have (on average 1.5476190476190477) internal successors, (65), 63 states have internal predecessors, (65), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-16 12:13:36,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2022-11-16 12:13:36,075 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 15 [2022-11-16 12:13:36,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:36,076 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2022-11-16 12:13:36,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:13:36,076 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2022-11-16 12:13:36,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 12:13:36,077 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:36,077 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:36,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:13:36,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:13:36,290 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __ldv_list_addErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:13:36,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:36,291 INFO L85 PathProgramCache]: Analyzing trace with hash 780183108, now seen corresponding path program 1 times [2022-11-16 12:13:36,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:13:36,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1706542106] [2022-11-16 12:13:36,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:36,291 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:13:36,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:13:36,292 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:13:36,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-16 12:13:36,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:36,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:13:36,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:36,404 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:13:36,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:36,503 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:13:36,504 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:13:36,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1706542106] [2022-11-16 12:13:36,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1706542106] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:36,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:36,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:13:36,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863877401] [2022-11-16 12:13:36,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:36,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:13:36,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:13:36,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:13:36,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:13:36,506 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:13:36,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:36,957 INFO L93 Difference]: Finished difference Result 81 states and 84 transitions. [2022-11-16 12:13:36,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:13:36,958 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-16 12:13:36,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:36,959 INFO L225 Difference]: With dead ends: 81 [2022-11-16 12:13:36,959 INFO L226 Difference]: Without dead ends: 81 [2022-11-16 12:13:36,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:13:36,960 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 36 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:36,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 317 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:13:36,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-16 12:13:36,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 71. [2022-11-16 12:13:36,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 42 states have (on average 1.5) internal successors, (63), 61 states have internal predecessors, (63), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-16 12:13:36,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2022-11-16 12:13:36,965 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 16 [2022-11-16 12:13:36,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:36,965 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2022-11-16 12:13:36,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:13:36,966 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2022-11-16 12:13:36,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 12:13:36,966 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:36,966 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:36,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:13:37,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:13:37,177 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __ldv_list_addErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:13:37,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:37,177 INFO L85 PathProgramCache]: Analyzing trace with hash 780183109, now seen corresponding path program 1 times [2022-11-16 12:13:37,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:13:37,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1993643631] [2022-11-16 12:13:37,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:37,178 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:13:37,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:13:37,179 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:13:37,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-16 12:13:37,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:37,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 12:13:37,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:37,297 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:13:37,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:37,497 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:13:37,497 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:13:37,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1993643631] [2022-11-16 12:13:37,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1993643631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:37,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:37,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:13:37,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099420344] [2022-11-16 12:13:37,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:37,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:13:37,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:13:37,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:13:37,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:13:37,499 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:13:38,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:38,025 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2022-11-16 12:13:38,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:13:38,026 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-16 12:13:38,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:38,027 INFO L225 Difference]: With dead ends: 86 [2022-11-16 12:13:38,027 INFO L226 Difference]: Without dead ends: 86 [2022-11-16 12:13:38,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:13:38,028 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 44 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:38,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 450 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:13:38,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-16 12:13:38,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 69. [2022-11-16 12:13:38,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 59 states have internal predecessors, (61), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-16 12:13:38,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2022-11-16 12:13:38,032 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 16 [2022-11-16 12:13:38,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:38,032 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2022-11-16 12:13:38,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:13:38,033 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2022-11-16 12:13:38,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 12:13:38,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:38,033 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:38,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-16 12:13:38,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:13:38,243 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_list_delErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:13:38,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:38,243 INFO L85 PathProgramCache]: Analyzing trace with hash 615640452, now seen corresponding path program 1 times [2022-11-16 12:13:38,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:13:38,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [171958579] [2022-11-16 12:13:38,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:38,244 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:13:38,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:13:38,245 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:13:38,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-16 12:13:38,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:38,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 12:13:38,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:38,464 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:13:38,465 INFO L350 Elim1Store]: Elim1 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 10 [2022-11-16 12:13:38,473 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:13:38,474 INFO L350 Elim1Store]: Elim1 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 10 [2022-11-16 12:13:38,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:38,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:13:38,529 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:13:38,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [171958579] [2022-11-16 12:13:38,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [171958579] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:38,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:38,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:13:38,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658962986] [2022-11-16 12:13:38,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:38,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:13:38,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:13:38,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:13:38,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:13:38,531 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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) [2022-11-16 12:13:38,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:38,710 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2022-11-16 12:13:38,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:13:38,711 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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 16 [2022-11-16 12:13:38,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:38,712 INFO L225 Difference]: With dead ends: 75 [2022-11-16 12:13:38,712 INFO L226 Difference]: Without dead ends: 75 [2022-11-16 12:13:38,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:13:38,713 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 26 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:38,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 216 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 15 Unchecked, 0.1s Time] [2022-11-16 12:13:38,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-11-16 12:13:38,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 71. [2022-11-16 12:13:38,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 44 states have (on average 1.4318181818181819) internal successors, (63), 61 states have internal predecessors, (63), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-16 12:13:38,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2022-11-16 12:13:38,716 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 16 [2022-11-16 12:13:38,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:38,717 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2022-11-16 12:13:38,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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) [2022-11-16 12:13:38,717 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2022-11-16 12:13:38,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 12:13:38,717 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:38,718 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:38,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-16 12:13:38,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:13:38,931 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __ldv_list_addErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:13:38,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:38,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1863308281, now seen corresponding path program 1 times [2022-11-16 12:13:38,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:13:38,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [310743671] [2022-11-16 12:13:38,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:38,933 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:13:38,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:13:38,934 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:13:38,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-16 12:13:39,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:39,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:13:39,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:39,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:39,085 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:13:39,085 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:13:39,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [310743671] [2022-11-16 12:13:39,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [310743671] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:39,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:39,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:13:39,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187137027] [2022-11-16 12:13:39,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:39,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:13:39,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:13:39,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:13:39,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:13:39,086 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:13:39,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:39,245 INFO L93 Difference]: Finished difference Result 70 states and 71 transitions. [2022-11-16 12:13:39,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:13:39,246 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-11-16 12:13:39,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:39,246 INFO L225 Difference]: With dead ends: 70 [2022-11-16 12:13:39,247 INFO L226 Difference]: Without dead ends: 70 [2022-11-16 12:13:39,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:13:39,247 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 12 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:39,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 157 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:13:39,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-11-16 12:13:39,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-11-16 12:13:39,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 60 states have internal predecessors, (62), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-16 12:13:39,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2022-11-16 12:13:39,251 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 18 [2022-11-16 12:13:39,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:39,252 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2022-11-16 12:13:39,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:13:39,252 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2022-11-16 12:13:39,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 12:13:39,252 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:39,252 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:39,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-16 12:13:39,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:13:39,462 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __ldv_list_addErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:13:39,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:39,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1863308280, now seen corresponding path program 1 times [2022-11-16 12:13:39,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:13:39,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [41105298] [2022-11-16 12:13:39,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:39,463 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:13:39,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:13:39,464 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:13:39,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-16 12:13:39,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:39,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 12:13:39,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:39,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:39,751 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:13:39,751 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:13:39,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [41105298] [2022-11-16 12:13:39,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [41105298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:39,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:39,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:13:39,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443180567] [2022-11-16 12:13:39,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:39,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:13:39,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:13:39,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:13:39,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:13:39,753 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:13:40,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:40,092 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2022-11-16 12:13:40,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:13:40,093 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-11-16 12:13:40,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:40,094 INFO L225 Difference]: With dead ends: 69 [2022-11-16 12:13:40,094 INFO L226 Difference]: Without dead ends: 69 [2022-11-16 12:13:40,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:13:40,095 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 38 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:40,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 252 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:13:40,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-16 12:13:40,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-11-16 12:13:40,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 44 states have (on average 1.3863636363636365) internal successors, (61), 59 states have internal predecessors, (61), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-16 12:13:40,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2022-11-16 12:13:40,099 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 18 [2022-11-16 12:13:40,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:40,099 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2022-11-16 12:13:40,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:13:40,100 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2022-11-16 12:13:40,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 12:13:40,101 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:40,101 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:40,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-16 12:13:40,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:13:40,301 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:13:40,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:40,302 INFO L85 PathProgramCache]: Analyzing trace with hash 615538426, now seen corresponding path program 1 times [2022-11-16 12:13:40,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:13:40,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [699155054] [2022-11-16 12:13:40,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:40,303 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:13:40,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:13:40,304 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:13:40,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-16 12:13:40,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:40,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:13:40,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:40,523 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~#list_14~0#1.base_6| (_ BitVec 32))) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~#list_14~0#1.base_6| (_ bv0 1))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~#list_14~0#1.base_6|)))) is different from true [2022-11-16 12:13:40,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:40,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:13:40,534 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:13:40,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [699155054] [2022-11-16 12:13:40,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [699155054] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:40,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:40,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:13:40,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118031137] [2022-11-16 12:13:40,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:40,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:13:40,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:13:40,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:13:40,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2022-11-16 12:13:40,536 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 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) [2022-11-16 12:13:40,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:40,676 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2022-11-16 12:13:40,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:13:40,677 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 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 [2022-11-16 12:13:40,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:40,678 INFO L225 Difference]: With dead ends: 72 [2022-11-16 12:13:40,678 INFO L226 Difference]: Without dead ends: 61 [2022-11-16 12:13:40,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2022-11-16 12:13:40,679 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 27 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 112 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:40,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 69 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 112 Unchecked, 0.1s Time] [2022-11-16 12:13:40,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-16 12:13:40,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-11-16 12:13:40,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 52 states have internal predecessors, (53), 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) [2022-11-16 12:13:40,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2022-11-16 12:13:40,683 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 16 [2022-11-16 12:13:40,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:40,683 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2022-11-16 12:13:40,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 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) [2022-11-16 12:13:40,683 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2022-11-16 12:13:40,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-16 12:13:40,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:40,684 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:40,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-16 12:13:40,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:13:40,885 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:13:40,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:40,885 INFO L85 PathProgramCache]: Analyzing trace with hash -632903047, now seen corresponding path program 1 times [2022-11-16 12:13:40,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:13:40,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [700467153] [2022-11-16 12:13:40,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:40,886 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:13:40,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:13:40,887 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:13:40,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-16 12:13:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:41,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:13:41,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:41,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:41,192 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:13:41,192 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:13:41,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [700467153] [2022-11-16 12:13:41,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [700467153] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:41,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:41,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:13:41,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977408306] [2022-11-16 12:13:41,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:41,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:13:41,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:13:41,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:13:41,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:13:41,195 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 12:13:41,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:41,419 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2022-11-16 12:13:41,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:13:41,420 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2022-11-16 12:13:41,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:41,420 INFO L225 Difference]: With dead ends: 69 [2022-11-16 12:13:41,421 INFO L226 Difference]: Without dead ends: 69 [2022-11-16 12:13:41,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:13:41,422 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 49 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:41,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 200 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 78 Invalid, 0 Unknown, 28 Unchecked, 0.2s Time] [2022-11-16 12:13:41,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-16 12:13:41,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 60. [2022-11-16 12:13:41,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 51 states have internal predecessors, (52), 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) [2022-11-16 12:13:41,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2022-11-16 12:13:41,425 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 25 [2022-11-16 12:13:41,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:41,426 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2022-11-16 12:13:41,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 12:13:41,426 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2022-11-16 12:13:41,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-16 12:13:41,427 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:41,427 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:41,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-16 12:13:41,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:13:41,638 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:13:41,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:41,639 INFO L85 PathProgramCache]: Analyzing trace with hash -632903046, now seen corresponding path program 1 times [2022-11-16 12:13:41,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:13:41,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [639845312] [2022-11-16 12:13:41,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:41,640 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:13:41,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:13:41,642 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:13:41,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-16 12:13:41,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:41,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 12:13:41,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:42,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:42,005 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:13:42,006 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:13:42,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [639845312] [2022-11-16 12:13:42,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [639845312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:42,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:42,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:13:42,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598877505] [2022-11-16 12:13:42,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:42,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:13:42,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:13:42,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:13:42,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:13:42,007 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 12:13:42,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:42,400 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2022-11-16 12:13:42,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:13:42,401 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2022-11-16 12:13:42,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:42,402 INFO L225 Difference]: With dead ends: 59 [2022-11-16 12:13:42,402 INFO L226 Difference]: Without dead ends: 59 [2022-11-16 12:13:42,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:13:42,403 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 50 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:42,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 191 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:13:42,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-16 12:13:42,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-11-16 12:13:42,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 37 states have (on average 1.3783783783783783) internal successors, (51), 50 states have internal predecessors, (51), 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) [2022-11-16 12:13:42,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2022-11-16 12:13:42,407 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 25 [2022-11-16 12:13:42,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:42,407 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2022-11-16 12:13:42,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 12:13:42,408 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2022-11-16 12:13:42,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-16 12:13:42,408 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:42,409 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:42,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-16 12:13:42,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:13:42,609 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_list_delErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:13:42,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:42,610 INFO L85 PathProgramCache]: Analyzing trace with hash -2017194109, now seen corresponding path program 1 times [2022-11-16 12:13:42,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:13:42,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1047429273] [2022-11-16 12:13:42,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:42,611 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:13:42,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:13:42,612 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:13:42,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-16 12:13:42,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:42,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-16 12:13:42,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:42,777 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:13:43,037 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:13:43,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-16 12:13:43,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:43,422 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:13:43,422 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:13:43,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1047429273] [2022-11-16 12:13:43,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1047429273] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:43,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:43,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-16 12:13:43,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644970634] [2022-11-16 12:13:43,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:43,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-16 12:13:43,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:13:43,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-16 12:13:43,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:13:43,425 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 13 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:13:43,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:43,897 INFO L93 Difference]: Finished difference Result 77 states and 78 transitions. [2022-11-16 12:13:43,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 12:13:43,898 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 13 states have internal predecessors, (23), 4 states have call successors, (4), 3 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 30 [2022-11-16 12:13:43,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:43,899 INFO L225 Difference]: With dead ends: 77 [2022-11-16 12:13:43,899 INFO L226 Difference]: Without dead ends: 77 [2022-11-16 12:13:43,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-11-16 12:13:43,900 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 52 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 131 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:43,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 222 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 147 Invalid, 0 Unknown, 131 Unchecked, 0.3s Time] [2022-11-16 12:13:43,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-11-16 12:13:43,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 70. [2022-11-16 12:13:43,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 46 states have (on average 1.4565217391304348) internal successors, (67), 60 states have internal predecessors, (67), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 12:13:43,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 77 transitions. [2022-11-16 12:13:43,904 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 77 transitions. Word has length 30 [2022-11-16 12:13:43,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:43,905 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 77 transitions. [2022-11-16 12:13:43,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 13 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:13:43,905 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 77 transitions. [2022-11-16 12:13:43,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-16 12:13:43,905 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:43,906 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:43,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-16 12:13:44,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:13:44,120 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_list_delErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:13:44,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:44,121 INFO L85 PathProgramCache]: Analyzing trace with hash -2017194108, now seen corresponding path program 1 times [2022-11-16 12:13:44,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:13:44,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [596048924] [2022-11-16 12:13:44,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:44,121 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:13:44,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:13:44,123 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:13:44,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-16 12:13:44,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:44,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-16 12:13:44,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:44,327 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:13:44,711 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:13:44,734 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:13:45,021 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:13:45,024 INFO L350 Elim1Store]: Elim1 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 17 treesize of output 9 [2022-11-16 12:13:45,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:45,225 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:13:45,225 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:13:45,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [596048924] [2022-11-16 12:13:45,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [596048924] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:45,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:45,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-16 12:13:45,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792632401] [2022-11-16 12:13:45,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:45,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:13:45,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:13:45,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:13:45,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:13:45,228 INFO L87 Difference]: Start difference. First operand 70 states and 77 transitions. Second operand has 18 states, 16 states have (on average 1.4375) internal successors, (23), 14 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:13:45,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:45,866 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2022-11-16 12:13:45,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 12:13:45,867 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 1.4375) internal successors, (23), 14 states have internal predecessors, (23), 4 states have call successors, (4), 3 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 30 [2022-11-16 12:13:45,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:45,868 INFO L225 Difference]: With dead ends: 78 [2022-11-16 12:13:45,868 INFO L226 Difference]: Without dead ends: 78 [2022-11-16 12:13:45,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2022-11-16 12:13:45,869 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 70 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 106 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:45,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 242 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 106 Unchecked, 0.4s Time] [2022-11-16 12:13:45,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-16 12:13:45,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 70. [2022-11-16 12:13:45,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 46 states have (on average 1.4130434782608696) internal successors, (65), 60 states have internal predecessors, (65), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 12:13:45,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 75 transitions. [2022-11-16 12:13:45,872 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 75 transitions. Word has length 30 [2022-11-16 12:13:45,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:45,873 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 75 transitions. [2022-11-16 12:13:45,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 1.4375) internal successors, (23), 14 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:13:45,873 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 75 transitions. [2022-11-16 12:13:45,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-16 12:13:45,874 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:45,874 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:45,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-16 12:13:46,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:13:46,074 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:13:46,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:46,075 INFO L85 PathProgramCache]: Analyzing trace with hash -2017296135, now seen corresponding path program 1 times [2022-11-16 12:13:46,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:13:46,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [51982501] [2022-11-16 12:13:46,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:46,075 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:13:46,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:13:46,076 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:13:46,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-16 12:13:46,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:46,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-16 12:13:46,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:46,440 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:13:46,571 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:13:46,572 INFO L350 Elim1Store]: Elim1 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 10 [2022-11-16 12:13:46,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:46,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:13:46,636 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:13:46,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [51982501] [2022-11-16 12:13:46,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [51982501] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:46,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:46,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-16 12:13:46,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704714751] [2022-11-16 12:13:46,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:46,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 12:13:46,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:13:46,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 12:13:46,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:13:46,639 INFO L87 Difference]: Start difference. First operand 70 states and 75 transitions. Second operand has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 12 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:13:47,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:47,372 INFO L93 Difference]: Finished difference Result 79 states and 83 transitions. [2022-11-16 12:13:47,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:13:47,373 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 12 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 30 [2022-11-16 12:13:47,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:47,375 INFO L225 Difference]: With dead ends: 79 [2022-11-16 12:13:47,375 INFO L226 Difference]: Without dead ends: 79 [2022-11-16 12:13:47,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2022-11-16 12:13:47,376 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 47 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:47,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 420 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 12:13:47,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-16 12:13:47,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 71. [2022-11-16 12:13:47,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 47 states have (on average 1.3829787234042554) internal successors, (65), 60 states have internal predecessors, (65), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 12:13:47,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2022-11-16 12:13:47,383 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 30 [2022-11-16 12:13:47,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:47,383 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2022-11-16 12:13:47,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 12 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:13:47,384 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2022-11-16 12:13:47,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-16 12:13:47,386 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:47,386 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:47,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-16 12:13:47,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:13:47,601 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_list_delErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:13:47,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:47,601 INFO L85 PathProgramCache]: Analyzing trace with hash 952738272, now seen corresponding path program 1 times [2022-11-16 12:13:47,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:13:47,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [895243789] [2022-11-16 12:13:47,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:47,601 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:13:47,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:13:47,602 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:13:47,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-16 12:13:47,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:47,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 62 conjunts are in the unsatisfiable core [2022-11-16 12:13:47,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:47,866 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 12:13:47,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 22 [2022-11-16 12:13:47,951 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:13:47,951 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-16 12:13:52,073 INFO L321 Elim1Store]: treesize reduction 16, result has 48.4 percent of original size [2022-11-16 12:13:52,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 30 [2022-11-16 12:13:52,512 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:13:52,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:13:52,692 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-16 12:13:52,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 26 [2022-11-16 12:13:52,701 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:13:53,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2022-11-16 12:13:53,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2022-11-16 12:13:53,869 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-16 12:13:53,869 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 14 [2022-11-16 12:13:54,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:54,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:13:54,021 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:13:54,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [895243789] [2022-11-16 12:13:54,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [895243789] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:54,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:54,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 12:13:54,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256983585] [2022-11-16 12:13:54,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:54,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 12:13:54,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:13:54,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 12:13:54,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=492, Unknown=0, NotChecked=0, Total=552 [2022-11-16 12:13:54,023 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand has 24 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 18 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:13:57,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:57,309 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2022-11-16 12:13:57,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-16 12:13:57,309 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 18 states have internal predecessors, (26), 4 states have call successors, (4), 4 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 33 [2022-11-16 12:13:57,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:57,310 INFO L225 Difference]: With dead ends: 74 [2022-11-16 12:13:57,310 INFO L226 Difference]: Without dead ends: 74 [2022-11-16 12:13:57,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=104, Invalid=888, Unknown=0, NotChecked=0, Total=992 [2022-11-16 12:13:57,311 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 37 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 310 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:57,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 477 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 293 Invalid, 0 Unknown, 310 Unchecked, 0.6s Time] [2022-11-16 12:13:57,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-16 12:13:57,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 71. [2022-11-16 12:13:57,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 47 states have (on average 1.3617021276595744) internal successors, (64), 60 states have internal predecessors, (64), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 12:13:57,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions. [2022-11-16 12:13:57,315 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 33 [2022-11-16 12:13:57,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:57,315 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 74 transitions. [2022-11-16 12:13:57,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 18 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:13:57,316 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 74 transitions. [2022-11-16 12:13:57,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-16 12:13:57,316 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:57,316 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:57,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-16 12:13:57,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:13:57,525 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_list_delErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:13:57,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:57,526 INFO L85 PathProgramCache]: Analyzing trace with hash 952738273, now seen corresponding path program 1 times [2022-11-16 12:13:57,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:13:57,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [101501433] [2022-11-16 12:13:57,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:57,526 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:13:57,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:13:57,527 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:13:57,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-16 12:13:57,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:57,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 82 conjunts are in the unsatisfiable core [2022-11-16 12:13:57,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:57,762 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:13:57,782 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:13:57,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-16 12:13:57,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 12:13:57,976 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:13:57,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:13:57,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 12:13:58,195 INFO L350 Elim1Store]: Elim1 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 7 treesize of output 3 [2022-11-16 12:13:58,199 INFO L350 Elim1Store]: Elim1 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 7 treesize of output 3 [2022-11-16 12:13:58,566 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:13:58,578 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:13:58,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:13:58,689 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:13:58,761 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-16 12:13:58,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 26 [2022-11-16 12:13:58,804 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-16 12:13:58,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 26 [2022-11-16 12:13:59,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2022-11-16 12:13:59,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2022-11-16 12:14:00,377 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-11-16 12:14:00,377 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 36 [2022-11-16 12:14:00,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 10 [2022-11-16 12:14:00,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:00,581 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:14:00,582 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:14:00,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [101501433] [2022-11-16 12:14:00,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [101501433] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:14:00,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:14:00,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 12:14:00,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353345308] [2022-11-16 12:14:00,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:14:00,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:14:00,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:14:00,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:14:00,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:14:00,584 INFO L87 Difference]: Start difference. First operand 71 states and 74 transitions. Second operand has 23 states, 20 states have (on average 1.3) internal successors, (26), 18 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:14:01,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:14:01,193 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2022-11-16 12:14:01,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 12:14:01,194 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 1.3) internal successors, (26), 18 states have internal predecessors, (26), 4 states have call successors, (4), 4 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 33 [2022-11-16 12:14:01,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:14:01,195 INFO L225 Difference]: With dead ends: 73 [2022-11-16 12:14:01,195 INFO L226 Difference]: Without dead ends: 73 [2022-11-16 12:14:01,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=79, Invalid=571, Unknown=0, NotChecked=0, Total=650 [2022-11-16 12:14:01,196 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 29 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 261 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:14:01,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 351 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 261 Unchecked, 0.2s Time] [2022-11-16 12:14:01,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-11-16 12:14:01,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2022-11-16 12:14:01,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 47 states have (on average 1.3404255319148937) internal successors, (63), 60 states have internal predecessors, (63), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 12:14:01,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2022-11-16 12:14:01,201 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 33 [2022-11-16 12:14:01,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:14:01,201 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2022-11-16 12:14:01,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 1.3) internal successors, (26), 18 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:14:01,202 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2022-11-16 12:14:01,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-16 12:14:01,202 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:01,202 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:14:01,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-16 12:14:01,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:14:01,417 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_list_delErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:14:01,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:01,417 INFO L85 PathProgramCache]: Analyzing trace with hash -529884599, now seen corresponding path program 1 times [2022-11-16 12:14:01,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:14:01,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [928255882] [2022-11-16 12:14:01,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:01,418 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:14:01,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:14:01,419 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:14:01,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-16 12:14:01,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:01,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-16 12:14:01,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:14:01,669 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:14:01,740 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:14:01,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:14:02,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:14:02,128 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-11-16 12:14:02,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 34 [2022-11-16 12:14:02,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-11-16 12:14:02,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 7 [2022-11-16 12:14:03,247 INFO L321 Elim1Store]: treesize reduction 34, result has 8.1 percent of original size [2022-11-16 12:14:03,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 27 [2022-11-16 12:14:03,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:03,373 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:14:03,373 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:14:03,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [928255882] [2022-11-16 12:14:03,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [928255882] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:14:03,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:14:03,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-16 12:14:03,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830825985] [2022-11-16 12:14:03,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:14:03,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 12:14:03,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:14:03,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 12:14:03,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2022-11-16 12:14:03,375 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand has 22 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 18 states have internal predecessors, (27), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:14:04,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:14:04,008 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2022-11-16 12:14:04,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 12:14:04,009 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 18 states have internal predecessors, (27), 4 states have call successors, (4), 4 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 34 [2022-11-16 12:14:04,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:14:04,010 INFO L225 Difference]: With dead ends: 72 [2022-11-16 12:14:04,010 INFO L226 Difference]: Without dead ends: 72 [2022-11-16 12:14:04,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=94, Invalid=662, Unknown=0, NotChecked=0, Total=756 [2022-11-16 12:14:04,011 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 36 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 372 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:14:04,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 271 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 242 Invalid, 0 Unknown, 372 Unchecked, 0.4s Time] [2022-11-16 12:14:04,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-11-16 12:14:04,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2022-11-16 12:14:04,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 47 states have (on average 1.3191489361702127) internal successors, (62), 60 states have internal predecessors, (62), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 12:14:04,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2022-11-16 12:14:04,015 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 34 [2022-11-16 12:14:04,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:14:04,016 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2022-11-16 12:14:04,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 18 states have internal predecessors, (27), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:14:04,016 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2022-11-16 12:14:04,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-16 12:14:04,017 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:04,017 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:14:04,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-16 12:14:04,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:14:04,231 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_list_delErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:14:04,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:04,231 INFO L85 PathProgramCache]: Analyzing trace with hash -529884598, now seen corresponding path program 1 times [2022-11-16 12:14:04,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:14:04,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1641622022] [2022-11-16 12:14:04,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:04,232 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:14:04,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:14:04,232 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:14:04,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-16 12:14:04,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:04,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 73 conjunts are in the unsatisfiable core [2022-11-16 12:14:04,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:14:04,424 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:14:04,434 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:14:04,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-16 12:14:04,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 12:14:04,607 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:14:04,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-16 12:14:04,633 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:14:04,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:14:04,817 INFO L350 Elim1Store]: Elim1 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 7 treesize of output 3 [2022-11-16 12:14:05,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:14:05,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:14:08,606 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 12:14:08,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2022-11-16 12:14:08,655 INFO L321 Elim1Store]: treesize reduction 43, result has 23.2 percent of original size [2022-11-16 12:14:08,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-11-16 12:14:09,082 INFO L350 Elim1Store]: Elim1 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 7 treesize of output 3 [2022-11-16 12:14:10,228 INFO L321 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2022-11-16 12:14:10,228 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 40 [2022-11-16 12:14:10,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 12 [2022-11-16 12:14:10,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:10,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:14:10,450 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:14:10,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1641622022] [2022-11-16 12:14:10,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1641622022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:14:10,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:14:10,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 12:14:10,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567643595] [2022-11-16 12:14:10,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:14:10,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:14:10,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:14:10,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:14:10,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:14:10,452 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand has 23 states, 20 states have (on average 1.35) internal successors, (27), 18 states have internal predecessors, (27), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:14:11,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:14:11,062 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2022-11-16 12:14:11,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-16 12:14:11,063 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 1.35) internal successors, (27), 18 states have internal predecessors, (27), 4 states have call successors, (4), 4 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 34 [2022-11-16 12:14:11,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:14:11,064 INFO L225 Difference]: With dead ends: 71 [2022-11-16 12:14:11,064 INFO L226 Difference]: Without dead ends: 71 [2022-11-16 12:14:11,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=75, Invalid=525, Unknown=0, NotChecked=0, Total=600 [2022-11-16 12:14:11,065 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 11 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 249 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:14:11,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 349 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 249 Unchecked, 0.2s Time] [2022-11-16 12:14:11,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-16 12:14:11,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-11-16 12:14:11,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 47 states have (on average 1.297872340425532) internal successors, (61), 60 states have internal predecessors, (61), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 12:14:11,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2022-11-16 12:14:11,069 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 34 [2022-11-16 12:14:11,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:14:11,070 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2022-11-16 12:14:11,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 1.35) internal successors, (27), 18 states have internal predecessors, (27), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:14:11,070 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2022-11-16 12:14:11,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-16 12:14:11,071 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:11,071 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:14:11,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-16 12:14:11,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:14:11,287 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:14:11,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:11,287 INFO L85 PathProgramCache]: Analyzing trace with hash 457668250, now seen corresponding path program 1 times [2022-11-16 12:14:11,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:14:11,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [531680027] [2022-11-16 12:14:11,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:11,288 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:14:11,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:14:11,289 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:14:11,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-16 12:14:11,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:11,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-16 12:14:11,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:14:12,023 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:14:12,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-11-16 12:14:12,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:12,757 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:14:12,757 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:14:12,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [531680027] [2022-11-16 12:14:12,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [531680027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:14:12,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:14:12,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-16 12:14:12,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349647235] [2022-11-16 12:14:12,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:14:12,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 12:14:12,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:14:12,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 12:14:12,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:14:12,759 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 13 states have internal predecessors, (31), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:14:13,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:14:13,156 INFO L93 Difference]: Finished difference Result 98 states and 99 transitions. [2022-11-16 12:14:13,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 12:14:13,159 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 13 states have internal predecessors, (31), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 39 [2022-11-16 12:14:13,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:14:13,160 INFO L225 Difference]: With dead ends: 98 [2022-11-16 12:14:13,160 INFO L226 Difference]: Without dead ends: 98 [2022-11-16 12:14:13,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:14:13,161 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 75 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 110 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:14:13,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 307 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 92 Invalid, 0 Unknown, 110 Unchecked, 0.2s Time] [2022-11-16 12:14:13,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-16 12:14:13,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 72. [2022-11-16 12:14:13,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 48 states have (on average 1.2916666666666667) internal successors, (62), 61 states have internal predecessors, (62), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 12:14:13,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2022-11-16 12:14:13,165 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 39 [2022-11-16 12:14:13,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:14:13,165 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2022-11-16 12:14:13,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 13 states have internal predecessors, (31), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:14:13,165 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2022-11-16 12:14:13,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-16 12:14:13,166 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:13,166 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:14:13,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-11-16 12:14:13,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:14:13,366 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:14:13,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:13,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1302813936, now seen corresponding path program 1 times [2022-11-16 12:14:13,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:14:13,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [631946632] [2022-11-16 12:14:13,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:13,367 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:14:13,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:14:13,368 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:14:13,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-16 12:14:13,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:13,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-16 12:14:13,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:14:13,545 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:14:13,811 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:14:13,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-16 12:14:14,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:14,126 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:14:14,126 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:14:14,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [631946632] [2022-11-16 12:14:14,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [631946632] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:14:14,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:14:14,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-16 12:14:14,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490114750] [2022-11-16 12:14:14,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:14:14,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 12:14:14,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:14:14,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 12:14:14,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:14:14,129 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand has 15 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:14:14,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:14:14,470 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2022-11-16 12:14:14,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:14:14,471 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 40 [2022-11-16 12:14:14,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:14:14,472 INFO L225 Difference]: With dead ends: 73 [2022-11-16 12:14:14,472 INFO L226 Difference]: Without dead ends: 73 [2022-11-16 12:14:14,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:14:14,473 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 20 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 115 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:14:14,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 269 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 126 Invalid, 0 Unknown, 115 Unchecked, 0.2s Time] [2022-11-16 12:14:14,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-11-16 12:14:14,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-11-16 12:14:14,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 49 states have (on average 1.2857142857142858) internal successors, (63), 62 states have internal predecessors, (63), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 12:14:14,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2022-11-16 12:14:14,476 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 40 [2022-11-16 12:14:14,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:14:14,476 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2022-11-16 12:14:14,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:14:14,477 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2022-11-16 12:14:14,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-16 12:14:14,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:14,477 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:14:14,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-11-16 12:14:14,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:14:14,686 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:14:14,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:14,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1732526431, now seen corresponding path program 1 times [2022-11-16 12:14:14,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:14:14,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1838996744] [2022-11-16 12:14:14,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:14,687 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:14:14,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:14:14,688 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:14:14,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-16 12:14:14,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:14,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-16 12:14:14,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:14:14,881 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:14:15,235 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:14:15,242 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:14:15,518 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:14:15,524 INFO L350 Elim1Store]: Elim1 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 17 treesize of output 9 [2022-11-16 12:14:15,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:15,723 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:14:15,723 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:14:15,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1838996744] [2022-11-16 12:14:15,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1838996744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:14:15,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:14:15,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 12:14:15,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872978619] [2022-11-16 12:14:15,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:14:15,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 12:14:15,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:14:15,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 12:14:15,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:14:15,725 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand has 16 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:14:16,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:14:16,119 INFO L93 Difference]: Finished difference Result 92 states and 97 transitions. [2022-11-16 12:14:16,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 12:14:16,121 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 41 [2022-11-16 12:14:16,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:14:16,122 INFO L225 Difference]: With dead ends: 92 [2022-11-16 12:14:16,122 INFO L226 Difference]: Without dead ends: 92 [2022-11-16 12:14:16,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2022-11-16 12:14:16,123 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 33 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 102 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:14:16,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 267 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 102 Unchecked, 0.2s Time] [2022-11-16 12:14:16,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-11-16 12:14:16,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 74. [2022-11-16 12:14:16,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 50 states have (on average 1.3) internal successors, (65), 63 states have internal predecessors, (65), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 12:14:16,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2022-11-16 12:14:16,133 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 41 [2022-11-16 12:14:16,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:14:16,133 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2022-11-16 12:14:16,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:14:16,134 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2022-11-16 12:14:16,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-16 12:14:16,134 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:16,134 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:14:16,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-16 12:14:16,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:14:16,335 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:14:16,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:16,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1732526430, now seen corresponding path program 1 times [2022-11-16 12:14:16,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:14:16,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [786797952] [2022-11-16 12:14:16,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:16,336 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:14:16,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:14:16,337 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:14:16,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-16 12:14:16,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:14:16,541 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:14:16,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:14:16,716 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-11-16 12:14:16,716 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:14:16,717 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 26 remaining) [2022-11-16 12:14:16,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 26 remaining) [2022-11-16 12:14:16,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 26 remaining) [2022-11-16 12:14:16,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 26 remaining) [2022-11-16 12:14:16,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 26 remaining) [2022-11-16 12:14:16,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (20 of 26 remaining) [2022-11-16 12:14:16,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE (19 of 26 remaining) [2022-11-16 12:14:16,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE (18 of 26 remaining) [2022-11-16 12:14:16,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 26 remaining) [2022-11-16 12:14:16,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (16 of 26 remaining) [2022-11-16 12:14:16,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 26 remaining) [2022-11-16 12:14:16,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 26 remaining) [2022-11-16 12:14:16,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 26 remaining) [2022-11-16 12:14:16,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 26 remaining) [2022-11-16 12:14:16,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 26 remaining) [2022-11-16 12:14:16,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 26 remaining) [2022-11-16 12:14:16,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 26 remaining) [2022-11-16 12:14:16,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 26 remaining) [2022-11-16 12:14:16,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 26 remaining) [2022-11-16 12:14:16,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 26 remaining) [2022-11-16 12:14:16,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 26 remaining) [2022-11-16 12:14:16,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 26 remaining) [2022-11-16 12:14:16,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 26 remaining) [2022-11-16 12:14:16,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 26 remaining) [2022-11-16 12:14:16,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 26 remaining) [2022-11-16 12:14:16,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 26 remaining) [2022-11-16 12:14:16,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-16 12:14:16,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:14:16,940 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:14:16,943 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:14:17,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:14:17 BoogieIcfgContainer [2022-11-16 12:14:17,015 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:14:17,016 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:14:17,016 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:14:17,016 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:14:17,017 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:13:26" (3/4) ... [2022-11-16 12:14:17,019 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-16 12:14:17,086 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 12:14:17,087 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:14:17,087 INFO L158 Benchmark]: Toolchain (without parser) took 52564.52ms. Allocated memory was 56.6MB in the beginning and 130.0MB in the end (delta: 73.4MB). Free memory was 33.9MB in the beginning and 94.7MB in the end (delta: -60.8MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. [2022-11-16 12:14:17,088 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 56.6MB. Free memory is still 38.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:14:17,088 INFO L158 Benchmark]: CACSL2BoogieTranslator took 801.41ms. Allocated memory was 56.6MB in the beginning and 79.7MB in the end (delta: 23.1MB). Free memory was 33.7MB in the beginning and 59.8MB in the end (delta: -26.1MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. [2022-11-16 12:14:17,088 INFO L158 Benchmark]: Boogie Procedure Inliner took 97.22ms. Allocated memory is still 79.7MB. Free memory was 59.8MB in the beginning and 57.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:14:17,089 INFO L158 Benchmark]: Boogie Preprocessor took 48.77ms. Allocated memory is still 79.7MB. Free memory was 57.7MB in the beginning and 55.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:14:17,089 INFO L158 Benchmark]: RCFGBuilder took 795.80ms. Allocated memory is still 79.7MB. Free memory was 55.6MB in the beginning and 57.5MB in the end (delta: -1.9MB). Peak memory consumption was 19.3MB. Max. memory is 16.1GB. [2022-11-16 12:14:17,089 INFO L158 Benchmark]: TraceAbstraction took 50740.71ms. Allocated memory was 79.7MB in the beginning and 130.0MB in the end (delta: 50.3MB). Free memory was 56.8MB in the beginning and 98.9MB in the end (delta: -42.1MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. [2022-11-16 12:14:17,090 INFO L158 Benchmark]: Witness Printer took 71.24ms. Allocated memory is still 130.0MB. Free memory was 98.9MB in the beginning and 94.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 12:14:17,091 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 56.6MB. Free memory is still 38.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 801.41ms. Allocated memory was 56.6MB in the beginning and 79.7MB in the end (delta: 23.1MB). Free memory was 33.7MB in the beginning and 59.8MB in the end (delta: -26.1MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 97.22ms. Allocated memory is still 79.7MB. Free memory was 59.8MB in the beginning and 57.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.77ms. Allocated memory is still 79.7MB. Free memory was 57.7MB in the beginning and 55.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 795.80ms. Allocated memory is still 79.7MB. Free memory was 55.6MB in the beginning and 57.5MB in the end (delta: -1.9MB). Peak memory consumption was 19.3MB. Max. memory is 16.1GB. * TraceAbstraction took 50740.71ms. Allocated memory was 79.7MB in the beginning and 130.0MB in the end (delta: 50.3MB). Free memory was 56.8MB in the beginning and 98.9MB in the end (delta: -42.1MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. * Witness Printer took 71.24ms. Allocated memory is still 130.0MB. Free memory was 98.9MB in the beginning and 94.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; VAL [ldv_global_msg_list={1:0}] [L780] CALL entry_point() [L775] struct ldv_list_head list_14 = { &(list_14), &(list_14) }; [L776] CALL alloc_14(&list_14) [L762] CALL, EXPR ldv_malloc(sizeof(struct A14)) VAL [\old(size)=12, ldv_global_msg_list={1:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L762] RET, EXPR ldv_malloc(sizeof(struct A14)) VAL [ldv_global_msg_list={1:0}, ldv_malloc(sizeof(struct A14))={2:0}, list={-2147483647:0}, list={-2147483647:0}] [L762] struct A14 *p = (struct A14 *)ldv_malloc(sizeof(struct A14)); [L763] COND TRUE \read(*p) VAL [ldv_global_msg_list={1:0}, list={-2147483647:0}, list={-2147483647:0}, p={2:0}] [L764] CALL ldv_list_add(&p->list, list) VAL [head={-2147483647:0}, ldv_global_msg_list={1:0}, new={2:4}] [L559] EXPR head->next VAL [head={-2147483647:0}, head={-2147483647:0}, head->next={-2147483647:0}, ldv_global_msg_list={1:0}, new={2:4}, new={2:4}] [L559] CALL __ldv_list_add(new, head, head->next) VAL [ldv_global_msg_list={1:0}, new={2:4}, next={-2147483647:0}, prev={-2147483647:0}] [L547] next->prev = new VAL [ldv_global_msg_list={1:0}, new={2:4}, new={2:4}, next={-2147483647:0}, next={-2147483647:0}, prev={-2147483647:0}, prev={-2147483647:0}] [L548] new->next = next VAL [ldv_global_msg_list={1:0}, new={2:4}, new={2:4}, next={-2147483647:0}, next={-2147483647:0}, prev={-2147483647:0}, prev={-2147483647:0}] [L549] new->prev = prev VAL [ldv_global_msg_list={1:0}, new={2:4}, new={2:4}, next={-2147483647:0}, next={-2147483647:0}, prev={-2147483647:0}, prev={-2147483647:0}] [L550] prev->next = new VAL [ldv_global_msg_list={1:0}, new={2:4}, new={2:4}, next={-2147483647:0}, next={-2147483647:0}, prev={-2147483647:0}, prev={-2147483647:0}] [L559] RET __ldv_list_add(new, head, head->next) VAL [head={-2147483647:0}, head={-2147483647:0}, head->next={-2147483647:0}, ldv_global_msg_list={1:0}, new={2:4}, new={2:4}] [L764] RET ldv_list_add(&p->list, list) VAL [ldv_global_msg_list={1:0}, list={-2147483647:0}, list={-2147483647:0}, p={2:0}] [L776] RET alloc_14(&list_14) [L777] CALL free_14(&list_14) [L768] struct A14 *p; VAL [ldv_global_msg_list={1:0}, plist={-2147483647:0}, plist={-2147483647:0}] [L769] EXPR (plist)->next VAL [(plist)->next={2:4}, ldv_global_msg_list={1:0}, plist={-2147483647:0}, plist={-2147483647:0}] [L769] const typeof( ((typeof(*p) *)0)->list ) *__mptr = ((plist)->next); [L769] p = ({ const typeof( ((typeof(*p) *)0)->list ) *__mptr = ((plist)->next); (typeof(*p) *)( (char *)__mptr - ((size_t) &((typeof(*p) *)0)->list) );}) VAL [__mptr={2:4}, ldv_global_msg_list={1:0}, p={2:0}, plist={-2147483647:0}, plist={-2147483647:0}] [L769] COND TRUE &p->list != (plist) VAL [__mptr={2:4}, ldv_global_msg_list={1:0}, p={2:0}, plist={-2147483647:0}, plist={-2147483647:0}] [L770] CALL ldv_list_del(&p->list) VAL [ldv_global_msg_list={1:0}] [L567] EXPR entry->prev VAL [entry={2:4}, entry={2:4}, entry->prev={-2147483647:0}, ldv_global_msg_list={1:0}] [L567] EXPR entry->next VAL [entry={2:4}, entry={2:4}, entry->next={-2147483647:0}, entry->prev={-2147483647:0}, ldv_global_msg_list={1:0}] [L567] CALL __ldv_list_del(entry->prev, entry->next) [L554] next->prev = prev VAL [ldv_global_msg_list={1:0}, next={-2147483647:0}, next={-2147483647:0}, prev={-2147483647:0}, prev={-2147483647:0}] [L555] prev->next = next VAL [ldv_global_msg_list={1:0}, next={-2147483647:0}, next={-2147483647:0}, prev={-2147483647:0}, prev={-2147483647:0}] [L567] RET __ldv_list_del(entry->prev, entry->next) [L770] RET ldv_list_del(&p->list) VAL [__mptr={2:4}, ldv_global_msg_list={1:0}, p={2:0}, plist={-2147483647:0}, plist={-2147483647:0}] [L771] free(p) VAL [__mptr={2:4}, ldv_global_msg_list={1:0}, p={2:0}, plist={-2147483647:0}, plist={-2147483647:0}] [L771] free(p) VAL [__mptr={2:4}, ldv_global_msg_list={1:0}, p={2:0}, plist={-2147483647:0}, plist={-2147483647:0}] [L771] free(p) [L769] (p)->list.next - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 771]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 771]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 771]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 779]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 73 locations, 26 error locations. Started 1 CEGAR loops. OverallTime: 50.6s, OverallIterations: 27, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 13.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1102 SdHoareTripleChecker+Valid, 7.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1070 mSDsluCounter, 6648 SdHoareTripleChecker+Invalid, 6.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 2334 IncrementalHoareTripleChecker+Unchecked, 5450 mSDsCounter, 73 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3777 IncrementalHoareTripleChecker+Invalid, 6184 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 73 mSolverCounterUnsat, 1198 mSDtfsCounter, 3777 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 648 GetRequests, 309 SyntacticMatches, 11 SemanticMatches, 328 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 21.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=86occurred in iteration=6, InterpolantAutomatonStates: 321, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 26 MinimizatonAttempts, 234 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 26.7s InterpolantComputationTime, 637 NumberOfCodeBlocks, 637 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 570 ConstructedInterpolants, 204 QuantifiedInterpolants, 7674 SizeOfPredicates, 348 NumberOfNonLiveVariables, 3487 ConjunctsInSsa, 687 ConjunctsInUnsatCore, 26 InterpolantComputations, 26 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-16 12:14:17,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706aa4c2-92a7-42f7-8f2c-4e6f2f903cc9/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)