./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b04cfdc033f25419ae30b8c067b1e8de34cd963e91f12bceeafd05a3d125e0b7 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 19:52:26,191 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 19:52:26,194 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 19:52:26,228 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 19:52:26,229 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 19:52:26,230 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 19:52:26,232 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 19:52:26,234 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 19:52:26,237 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 19:52:26,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 19:52:26,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 19:52:26,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 19:52:26,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 19:52:26,243 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 19:52:26,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 19:52:26,246 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 19:52:26,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 19:52:26,249 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 19:52:26,251 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 19:52:26,253 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 19:52:26,255 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 19:52:26,257 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 19:52:26,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 19:52:26,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 19:52:26,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 19:52:26,265 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 19:52:26,265 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 19:52:26,267 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 19:52:26,267 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 19:52:26,269 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 19:52:26,269 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 19:52:26,271 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 19:52:26,272 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 19:52:26,273 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 19:52:26,275 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 19:52:26,275 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 19:52:26,276 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 19:52:26,277 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 19:52:26,278 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 19:52:26,279 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 19:52:26,280 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 19:52:26,282 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-02 19:52:26,311 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 19:52:26,311 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 19:52:26,312 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 19:52:26,312 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 19:52:26,313 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 19:52:26,313 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 19:52:26,314 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 19:52:26,315 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 19:52:26,315 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 19:52:26,315 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 19:52:26,316 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 19:52:26,316 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 19:52:26,316 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 19:52:26,317 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 19:52:26,317 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 19:52:26,317 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-02 19:52:26,318 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-02 19:52:26,318 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-02 19:52:26,318 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 19:52:26,319 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 19:52:26,319 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 19:52:26,319 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 19:52:26,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 19:52:26,320 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 19:52:26,321 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 19:52:26,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:52:26,321 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 19:52:26,338 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 19:52:26,339 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 19:52:26,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 19:52:26,339 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_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b04cfdc033f25419ae30b8c067b1e8de34cd963e91f12bceeafd05a3d125e0b7 [2022-11-02 19:52:26,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 19:52:26,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 19:52:26,751 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 19:52:26,755 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 19:52:26,756 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 19:52:26,757 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_3.i [2022-11-02 19:52:26,854 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/data/edb662e88/844ab0aa0afa4614b8f99f7fdd9c2479/FLAG3e63a8916 [2022-11-02 19:52:27,687 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 19:52:27,688 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/sv-benchmarks/c/ldv-memsafety/memleaks_test23_3.i [2022-11-02 19:52:27,717 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/data/edb662e88/844ab0aa0afa4614b8f99f7fdd9c2479/FLAG3e63a8916 [2022-11-02 19:52:27,903 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/data/edb662e88/844ab0aa0afa4614b8f99f7fdd9c2479 [2022-11-02 19:52:27,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 19:52:27,908 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 19:52:27,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 19:52:27,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 19:52:27,915 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 19:52:27,916 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:52:27" (1/1) ... [2022-11-02 19:52:27,918 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ba09f13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:27, skipping insertion in model container [2022-11-02 19:52:27,918 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:52:27" (1/1) ... [2022-11-02 19:52:27,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 19:52:28,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 19:52:28,499 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:52:28,520 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-11-02 19:52:28,525 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@235d1e54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:28, skipping insertion in model container [2022-11-02 19:52:28,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 19:52:28,526 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-02 19:52:28,530 INFO L158 Benchmark]: Toolchain (without parser) took 619.05ms. Allocated memory is still 104.9MB. Free memory was 61.1MB in the beginning and 75.2MB in the end (delta: -14.1MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. [2022-11-02 19:52:28,531 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 104.9MB. Free memory is still 79.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 19:52:28,532 INFO L158 Benchmark]: CACSL2BoogieTranslator took 615.64ms. Allocated memory is still 104.9MB. Free memory was 60.9MB in the beginning and 75.2MB in the end (delta: -14.3MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. [2022-11-02 19:52:28,535 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 104.9MB. Free memory is still 79.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 615.64ms. Allocated memory is still 104.9MB. Free memory was 60.9MB in the beginning and 75.2MB in the end (delta: -14.3MB). Peak memory consumption was 4.3MB. 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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b04cfdc033f25419ae30b8c067b1e8de34cd963e91f12bceeafd05a3d125e0b7 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 19:52:31,152 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 19:52:31,156 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 19:52:31,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 19:52:31,220 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 19:52:31,224 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 19:52:31,227 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 19:52:31,235 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 19:52:31,241 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 19:52:31,243 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 19:52:31,245 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 19:52:31,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 19:52:31,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 19:52:31,258 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 19:52:31,261 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 19:52:31,263 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 19:52:31,266 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 19:52:31,269 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 19:52:31,271 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 19:52:31,274 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 19:52:31,282 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 19:52:31,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 19:52:31,289 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 19:52:31,290 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 19:52:31,295 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 19:52:31,301 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 19:52:31,302 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 19:52:31,303 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 19:52:31,304 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 19:52:31,305 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 19:52:31,307 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 19:52:31,308 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 19:52:31,310 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 19:52:31,311 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 19:52:31,313 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 19:52:31,313 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 19:52:31,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 19:52:31,315 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 19:52:31,315 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 19:52:31,316 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 19:52:31,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 19:52:31,320 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-02 19:52:31,377 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 19:52:31,377 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 19:52:31,379 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 19:52:31,379 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 19:52:31,380 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 19:52:31,381 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 19:52:31,382 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 19:52:31,383 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 19:52:31,383 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 19:52:31,383 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 19:52:31,385 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 19:52:31,385 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 19:52:31,385 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 19:52:31,386 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 19:52:31,386 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 19:52:31,386 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-02 19:52:31,387 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-02 19:52:31,387 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-02 19:52:31,387 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 19:52:31,388 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 19:52:31,388 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 19:52:31,388 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 19:52:31,388 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 19:52:31,389 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 19:52:31,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 19:52:31,389 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 19:52:31,390 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 19:52:31,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:52:31,391 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 19:52:31,391 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 19:52:31,391 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 19:52:31,391 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 19:52:31,392 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 19:52:31,392 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_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b04cfdc033f25419ae30b8c067b1e8de34cd963e91f12bceeafd05a3d125e0b7 [2022-11-02 19:52:31,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 19:52:31,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 19:52:31,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 19:52:31,859 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 19:52:31,862 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 19:52:31,864 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_3.i [2022-11-02 19:52:31,956 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/data/e6026744a/8814b94fbbf74e15b22347544ddf9328/FLAG0f7d3ae7c [2022-11-02 19:52:32,764 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 19:52:32,765 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/sv-benchmarks/c/ldv-memsafety/memleaks_test23_3.i [2022-11-02 19:52:32,781 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/data/e6026744a/8814b94fbbf74e15b22347544ddf9328/FLAG0f7d3ae7c [2022-11-02 19:52:32,954 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/data/e6026744a/8814b94fbbf74e15b22347544ddf9328 [2022-11-02 19:52:32,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 19:52:32,959 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 19:52:32,960 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 19:52:32,961 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 19:52:32,966 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 19:52:32,967 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:52:32" (1/1) ... [2022-11-02 19:52:32,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e139a81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:32, skipping insertion in model container [2022-11-02 19:52:32,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:52:32" (1/1) ... [2022-11-02 19:52:32,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 19:52:33,047 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 19:52:33,802 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:52:33,835 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-02 19:52:33,853 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 19:52:33,969 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:52:33,985 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 19:52:34,082 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:52:34,174 INFO L208 MainTranslator]: Completed translation [2022-11-02 19:52:34,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:34 WrapperNode [2022-11-02 19:52:34,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 19:52:34,177 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 19:52:34,178 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 19:52:34,202 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 19:52:34,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:34" (1/1) ... [2022-11-02 19:52:34,243 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:34" (1/1) ... [2022-11-02 19:52:34,279 INFO L138 Inliner]: procedures = 174, calls = 117, calls flagged for inlining = 29, calls inlined = 14, statements flattened = 187 [2022-11-02 19:52:34,280 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 19:52:34,280 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 19:52:34,281 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 19:52:34,281 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 19:52:34,293 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:34" (1/1) ... [2022-11-02 19:52:34,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:34" (1/1) ... [2022-11-02 19:52:34,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:34" (1/1) ... [2022-11-02 19:52:34,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:34" (1/1) ... [2022-11-02 19:52:34,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:34" (1/1) ... [2022-11-02 19:52:34,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:34" (1/1) ... [2022-11-02 19:52:34,326 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:34" (1/1) ... [2022-11-02 19:52:34,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:34" (1/1) ... [2022-11-02 19:52:34,334 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 19:52:34,335 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 19:52:34,335 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 19:52:34,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 19:52:34,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:34" (1/1) ... [2022-11-02 19:52:34,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:52:34,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:52:34,375 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 19:52:34,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 19:52:34,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-02 19:52:34,433 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2022-11-02 19:52:34,433 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2022-11-02 19:52:34,433 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2022-11-02 19:52:34,434 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2022-11-02 19:52:34,434 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-02 19:52:34,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-02 19:52:34,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 19:52:34,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 19:52:34,437 INFO L130 BoogieDeclarations]: Found specification of procedure free_reports [2022-11-02 19:52:34,438 INFO L138 BoogieDeclarations]: Found implementation of procedure free_reports [2022-11-02 19:52:34,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 19:52:34,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 19:52:34,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 19:52:34,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-02 19:52:34,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 19:52:34,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-02 19:52:34,439 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2022-11-02 19:52:34,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2022-11-02 19:52:34,440 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-02 19:52:34,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-02 19:52:34,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 19:52:34,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 19:52:34,653 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 19:52:34,668 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 19:52:36,009 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 19:52:36,018 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 19:52:36,019 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-02 19:52:36,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:52:36 BoogieIcfgContainer [2022-11-02 19:52:36,022 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 19:52:36,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 19:52:36,025 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 19:52:36,029 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 19:52:36,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 07:52:32" (1/3) ... [2022-11-02 19:52:36,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7317968d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:52:36, skipping insertion in model container [2022-11-02 19:52:36,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:34" (2/3) ... [2022-11-02 19:52:36,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7317968d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:52:36, skipping insertion in model container [2022-11-02 19:52:36,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:52:36" (3/3) ... [2022-11-02 19:52:36,033 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test23_3.i [2022-11-02 19:52:36,056 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 19:52:36,057 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 76 error locations. [2022-11-02 19:52:36,118 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 19:52:36,126 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;@13aae480, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 19:52:36,126 INFO L358 AbstractCegarLoop]: Starting to check reachability of 76 error locations. [2022-11-02 19:52:36,132 INFO L276 IsEmpty]: Start isEmpty. Operand has 199 states, 108 states have (on average 1.8425925925925926) internal successors, (199), 184 states have internal predecessors, (199), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-02 19:52:36,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 19:52:36,142 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:52:36,143 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:52:36,143 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:52:36,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:36,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1617164409, now seen corresponding path program 1 times [2022-11-02 19:52:36,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:52:36,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1040666406] [2022-11-02 19:52:36,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:36,167 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:52:36,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:52:36,174 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:52:36,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 19:52:36,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:36,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 19:52:36,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:52:36,463 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-02 19:52:36,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:52:36,594 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:52:36,595 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:52:36,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1040666406] [2022-11-02 19:52:36,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1040666406] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:52:36,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:52:36,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 19:52:36,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638421720] [2022-11-02 19:52:36,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:52:36,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:52:36,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:52:36,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:52:36,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:52:36,666 INFO L87 Difference]: Start difference. First operand has 199 states, 108 states have (on average 1.8425925925925926) internal successors, (199), 184 states have internal predecessors, (199), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 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) [2022-11-02 19:52:37,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:52:37,979 INFO L93 Difference]: Finished difference Result 226 states and 243 transitions. [2022-11-02 19:52:37,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 19:52:37,984 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 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 [2022-11-02 19:52:37,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:52:38,005 INFO L225 Difference]: With dead ends: 226 [2022-11-02 19:52:38,006 INFO L226 Difference]: Without dead ends: 222 [2022-11-02 19:52:38,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:52:38,022 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 28 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:52:38,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 825 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 19:52:38,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-11-02 19:52:38,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 206. [2022-11-02 19:52:38,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 114 states have (on average 1.7894736842105263) internal successors, (204), 189 states have internal predecessors, (204), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2022-11-02 19:52:38,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 223 transitions. [2022-11-02 19:52:38,138 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 223 transitions. Word has length 12 [2022-11-02 19:52:38,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:52:38,139 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 223 transitions. [2022-11-02 19:52:38,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 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) [2022-11-02 19:52:38,140 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 223 transitions. [2022-11-02 19:52:38,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 19:52:38,141 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:52:38,141 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:52:38,162 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-02 19:52:38,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:52:38,355 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:52:38,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:38,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1617164410, now seen corresponding path program 1 times [2022-11-02 19:52:38,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:52:38,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1503856943] [2022-11-02 19:52:38,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:38,357 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:52:38,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:52:38,359 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:52:38,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 19:52:38,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:38,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 19:52:38,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:52:38,521 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 19:52:38,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:52:38,720 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:52:38,720 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:52:38,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1503856943] [2022-11-02 19:52:38,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1503856943] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:52:38,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:52:38,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:52:38,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863103871] [2022-11-02 19:52:38,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:52:38,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:52:38,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:52:38,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:52:38,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:52:38,725 INFO L87 Difference]: Start difference. First operand 206 states and 223 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 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) [2022-11-02 19:52:40,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:52:40,094 INFO L93 Difference]: Finished difference Result 231 states and 247 transitions. [2022-11-02 19:52:40,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 19:52:40,097 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 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 [2022-11-02 19:52:40,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:52:40,099 INFO L225 Difference]: With dead ends: 231 [2022-11-02 19:52:40,099 INFO L226 Difference]: Without dead ends: 231 [2022-11-02 19:52:40,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-02 19:52:40,101 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 35 mSDsluCounter, 874 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:52:40,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 1070 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-02 19:52:40,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-11-02 19:52:40,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 206. [2022-11-02 19:52:40,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 114 states have (on average 1.7719298245614035) internal successors, (202), 189 states have internal predecessors, (202), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2022-11-02 19:52:40,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 221 transitions. [2022-11-02 19:52:40,120 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 221 transitions. Word has length 12 [2022-11-02 19:52:40,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:52:40,120 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 221 transitions. [2022-11-02 19:52:40,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 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) [2022-11-02 19:52:40,121 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 221 transitions. [2022-11-02 19:52:40,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 19:52:40,122 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:52:40,122 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:52:40,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 19:52:40,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:52:40,349 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:52:40,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:40,350 INFO L85 PathProgramCache]: Analyzing trace with hash -934992552, now seen corresponding path program 1 times [2022-11-02 19:52:40,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:52:40,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [109532435] [2022-11-02 19:52:40,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:40,351 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:52:40,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:52:40,353 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:52:40,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 19:52:40,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:40,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 19:52:40,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:52:40,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:52:40,562 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:52:40,562 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:52:40,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [109532435] [2022-11-02 19:52:40,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [109532435] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:52:40,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:52:40,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 19:52:40,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819513982] [2022-11-02 19:52:40,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:52:40,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:52:40,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:52:40,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:52:40,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:52:40,568 INFO L87 Difference]: Start difference. First operand 206 states and 221 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 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) [2022-11-02 19:52:40,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:52:40,625 INFO L93 Difference]: Finished difference Result 218 states and 233 transitions. [2022-11-02 19:52:40,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 19:52:40,626 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), 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 [2022-11-02 19:52:40,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:52:40,628 INFO L225 Difference]: With dead ends: 218 [2022-11-02 19:52:40,628 INFO L226 Difference]: Without dead ends: 218 [2022-11-02 19:52:40,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:52:40,630 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 20 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:52:40,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 820 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:52:40,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-11-02 19:52:40,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 197. [2022-11-02 19:52:40,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 110 states have (on average 1.7636363636363637) internal successors, (194), 181 states have internal predecessors, (194), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-02 19:52:40,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 211 transitions. [2022-11-02 19:52:40,644 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 211 transitions. Word has length 12 [2022-11-02 19:52:40,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:52:40,644 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 211 transitions. [2022-11-02 19:52:40,645 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), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 19:52:40,645 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 211 transitions. [2022-11-02 19:52:40,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 19:52:40,645 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:52:40,646 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:52:40,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 19:52:40,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:52:40,859 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:52:40,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:40,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1617078937, now seen corresponding path program 1 times [2022-11-02 19:52:40,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:52:40,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1101657219] [2022-11-02 19:52:40,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:40,860 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:52:40,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:52:40,861 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:52:40,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 19:52:40,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:40,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 19:52:40,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:52:41,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:52:41,027 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:52:41,027 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:52:41,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1101657219] [2022-11-02 19:52:41,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1101657219] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:52:41,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:52:41,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 19:52:41,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574405920] [2022-11-02 19:52:41,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:52:41,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:52:41,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:52:41,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:52:41,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:52:41,031 INFO L87 Difference]: Start difference. First operand 197 states and 211 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 19:52:41,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:52:41,090 INFO L93 Difference]: Finished difference Result 218 states and 232 transitions. [2022-11-02 19:52:41,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 19:52:41,094 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-02 19:52:41,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:52:41,096 INFO L225 Difference]: With dead ends: 218 [2022-11-02 19:52:41,096 INFO L226 Difference]: Without dead ends: 218 [2022-11-02 19:52:41,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:52:41,097 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 123 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:52:41,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 756 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:52:41,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-11-02 19:52:41,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 197. [2022-11-02 19:52:41,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 110 states have (on average 1.7545454545454546) internal successors, (193), 181 states have internal predecessors, (193), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-02 19:52:41,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 210 transitions. [2022-11-02 19:52:41,128 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 210 transitions. Word has length 12 [2022-11-02 19:52:41,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:52:41,128 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 210 transitions. [2022-11-02 19:52:41,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 19:52:41,129 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 210 transitions. [2022-11-02 19:52:41,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 19:52:41,129 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:52:41,129 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:52:41,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 19:52:41,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:52:41,330 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:52:41,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:41,331 INFO L85 PathProgramCache]: Analyzing trace with hash -935078024, now seen corresponding path program 1 times [2022-11-02 19:52:41,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:52:41,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2114190810] [2022-11-02 19:52:41,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:41,331 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:52:41,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:52:41,333 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:52:41,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 19:52:41,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:41,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 19:52:41,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:52:41,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:52:41,496 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:52:41,496 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:52:41,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2114190810] [2022-11-02 19:52:41,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2114190810] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:52:41,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:52:41,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 19:52:41,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854353265] [2022-11-02 19:52:41,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:52:41,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:52:41,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:52:41,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:52:41,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:52:41,502 INFO L87 Difference]: Start difference. First operand 197 states and 210 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 19:52:41,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:52:41,580 INFO L93 Difference]: Finished difference Result 202 states and 214 transitions. [2022-11-02 19:52:41,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 19:52:41,581 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-02 19:52:41,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:52:41,583 INFO L225 Difference]: With dead ends: 202 [2022-11-02 19:52:41,583 INFO L226 Difference]: Without dead ends: 202 [2022-11-02 19:52:41,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:52:41,588 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 106 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 708 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 [2022-11-02 19:52:41,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 708 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:52:41,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-11-02 19:52:41,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 199. [2022-11-02 19:52:41,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 112 states have (on average 1.7410714285714286) internal successors, (195), 183 states have internal predecessors, (195), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-02 19:52:41,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 212 transitions. [2022-11-02 19:52:41,617 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 212 transitions. Word has length 12 [2022-11-02 19:52:41,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:52:41,617 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 212 transitions. [2022-11-02 19:52:41,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 19:52:41,618 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 212 transitions. [2022-11-02 19:52:41,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 19:52:41,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:52:41,619 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:52:41,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 19:52:41,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:52:41,833 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_LEAK === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:52:41,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:41,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1077372438, now seen corresponding path program 1 times [2022-11-02 19:52:41,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:52:41,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [206898038] [2022-11-02 19:52:41,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:41,835 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:52:41,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:52:41,836 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:52:41,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 19:52:41,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:41,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 19:52:41,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:52:41,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:52:41,961 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:52:41,962 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:52:41,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [206898038] [2022-11-02 19:52:41,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [206898038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:52:41,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:52:41,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 19:52:41,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743779640] [2022-11-02 19:52:41,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:52:41,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:52:41,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:52:41,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:52:41,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:52:41,964 INFO L87 Difference]: Start difference. First operand 199 states and 212 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 19:52:42,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:52:42,551 INFO L93 Difference]: Finished difference Result 211 states and 226 transitions. [2022-11-02 19:52:42,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 19:52:42,552 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 13 [2022-11-02 19:52:42,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:52:42,554 INFO L225 Difference]: With dead ends: 211 [2022-11-02 19:52:42,554 INFO L226 Difference]: Without dead ends: 203 [2022-11-02 19:52:42,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:52:42,555 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 51 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 19:52:42,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 388 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 19:52:42,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-11-02 19:52:42,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 193. [2022-11-02 19:52:42,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 107 states have (on average 1.766355140186916) internal successors, (189), 178 states have internal predecessors, (189), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-02 19:52:42,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 205 transitions. [2022-11-02 19:52:42,565 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 205 transitions. Word has length 13 [2022-11-02 19:52:42,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:52:42,565 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 205 transitions. [2022-11-02 19:52:42,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 19:52:42,566 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 205 transitions. [2022-11-02 19:52:42,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 19:52:42,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:52:42,567 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:52:42,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 19:52:42,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:52:42,781 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:52:42,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:42,782 INFO L85 PathProgramCache]: Analyzing trace with hash 609549957, now seen corresponding path program 1 times [2022-11-02 19:52:42,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:52:42,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1334439460] [2022-11-02 19:52:42,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:42,783 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:52:42,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:52:42,784 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:52:42,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 19:52:42,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:42,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 19:52:42,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:52:43,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:52:43,120 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-02 19:52:43,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:52:43,228 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:52:43,228 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:52:43,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1334439460] [2022-11-02 19:52:43,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1334439460] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:52:43,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:52:43,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 19:52:43,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739879818] [2022-11-02 19:52:43,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:52:43,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:52:43,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:52:43,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:52:43,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:52:43,230 INFO L87 Difference]: Start difference. First operand 193 states and 205 transitions. Second operand has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 19:52:44,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:52:44,554 INFO L93 Difference]: Finished difference Result 203 states and 218 transitions. [2022-11-02 19:52:44,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 19:52:44,555 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2022-11-02 19:52:44,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:52:44,556 INFO L225 Difference]: With dead ends: 203 [2022-11-02 19:52:44,557 INFO L226 Difference]: Without dead ends: 203 [2022-11-02 19:52:44,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-11-02 19:52:44,558 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 58 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 120 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:52:44,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 592 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 443 Invalid, 0 Unknown, 120 Unchecked, 1.2s Time] [2022-11-02 19:52:44,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-11-02 19:52:44,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 192. [2022-11-02 19:52:44,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 107 states have (on average 1.7570093457943925) internal successors, (188), 177 states have internal predecessors, (188), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-02 19:52:44,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 204 transitions. [2022-11-02 19:52:44,568 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 204 transitions. Word has length 16 [2022-11-02 19:52:44,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:52:44,568 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 204 transitions. [2022-11-02 19:52:44,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 19:52:44,569 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 204 transitions. [2022-11-02 19:52:44,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 19:52:44,570 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:52:44,570 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:52:44,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 19:52:44,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:52:44,785 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:52:44,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:44,785 INFO L85 PathProgramCache]: Analyzing trace with hash 609549956, now seen corresponding path program 1 times [2022-11-02 19:52:44,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:52:44,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [536689348] [2022-11-02 19:52:44,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:44,786 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:52:44,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:52:44,788 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:52:44,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 19:52:44,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:44,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 19:52:44,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:52:45,078 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-02 19:52:45,079 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-02 19:52:45,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:52:45,139 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:52:45,139 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:52:45,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [536689348] [2022-11-02 19:52:45,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [536689348] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:52:45,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:52:45,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 19:52:45,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076635622] [2022-11-02 19:52:45,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:52:45,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:52:45,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:52:45,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:52:45,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:52:45,142 INFO L87 Difference]: Start difference. First operand 192 states and 204 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 19:52:46,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:52:46,126 INFO L93 Difference]: Finished difference Result 244 states and 259 transitions. [2022-11-02 19:52:46,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 19:52:46,126 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2022-11-02 19:52:46,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:52:46,128 INFO L225 Difference]: With dead ends: 244 [2022-11-02 19:52:46,128 INFO L226 Difference]: Without dead ends: 244 [2022-11-02 19:52:46,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-02 19:52:46,129 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 195 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 130 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 19:52:46,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 528 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 360 Invalid, 0 Unknown, 130 Unchecked, 0.9s Time] [2022-11-02 19:52:46,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-11-02 19:52:46,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 202. [2022-11-02 19:52:46,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 116 states have (on average 1.7413793103448276) internal successors, (202), 186 states have internal predecessors, (202), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2022-11-02 19:52:46,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 220 transitions. [2022-11-02 19:52:46,145 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 220 transitions. Word has length 16 [2022-11-02 19:52:46,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:52:46,146 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 220 transitions. [2022-11-02 19:52:46,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 19:52:46,146 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 220 transitions. [2022-11-02 19:52:46,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-02 19:52:46,148 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:52:46,149 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] [2022-11-02 19:52:46,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 19:52:46,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:52:46,364 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:52:46,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:46,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1600340348, now seen corresponding path program 1 times [2022-11-02 19:52:46,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:52:46,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [895532641] [2022-11-02 19:52:46,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:46,366 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:52:46,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:52:46,368 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:52:46,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 19:52:46,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:46,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 19:52:46,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:52:46,534 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-02 19:52:46,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:52:46,586 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:52:46,586 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:52:46,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [895532641] [2022-11-02 19:52:46,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [895532641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:52:46,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:52:46,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 19:52:46,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656761204] [2022-11-02 19:52:46,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:52:46,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 19:52:46,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:52:46,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 19:52:46,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 19:52:46,590 INFO L87 Difference]: Start difference. First operand 202 states and 220 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 19:52:47,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:52:47,497 INFO L93 Difference]: Finished difference Result 252 states and 278 transitions. [2022-11-02 19:52:47,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 19:52:47,497 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2022-11-02 19:52:47,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:52:47,499 INFO L225 Difference]: With dead ends: 252 [2022-11-02 19:52:47,499 INFO L226 Difference]: Without dead ends: 252 [2022-11-02 19:52:47,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:52:47,501 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 65 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 19:52:47,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 633 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 19:52:47,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-11-02 19:52:47,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 227. [2022-11-02 19:52:47,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 143 states have (on average 1.7622377622377623) internal successors, (252), 211 states have internal predecessors, (252), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2022-11-02 19:52:47,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 270 transitions. [2022-11-02 19:52:47,510 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 270 transitions. Word has length 25 [2022-11-02 19:52:47,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:52:47,511 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 270 transitions. [2022-11-02 19:52:47,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 19:52:47,511 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 270 transitions. [2022-11-02 19:52:47,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-02 19:52:47,512 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:52:47,512 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] [2022-11-02 19:52:47,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 19:52:47,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:52:47,727 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:52:47,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:47,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1600340347, now seen corresponding path program 1 times [2022-11-02 19:52:47,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:52:47,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [97484495] [2022-11-02 19:52:47,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:47,728 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:52:47,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:52:47,730 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:52:47,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 19:52:47,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:47,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 19:52:47,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:52:47,926 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 19:52:48,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:52:48,032 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:52:48,032 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:52:48,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [97484495] [2022-11-02 19:52:48,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [97484495] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:52:48,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:52:48,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 19:52:48,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885061311] [2022-11-02 19:52:48,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:52:48,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 19:52:48,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:52:48,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 19:52:48,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 19:52:48,034 INFO L87 Difference]: Start difference. First operand 227 states and 270 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 19:52:49,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:52:49,254 INFO L93 Difference]: Finished difference Result 284 states and 313 transitions. [2022-11-02 19:52:49,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 19:52:49,255 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2022-11-02 19:52:49,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:52:49,257 INFO L225 Difference]: With dead ends: 284 [2022-11-02 19:52:49,257 INFO L226 Difference]: Without dead ends: 284 [2022-11-02 19:52:49,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:52:49,258 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 99 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:52:49,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 631 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 19:52:49,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-11-02 19:52:49,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 229. [2022-11-02 19:52:49,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 146 states have (on average 1.7397260273972603) internal successors, (254), 212 states have internal predecessors, (254), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-02 19:52:49,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 275 transitions. [2022-11-02 19:52:49,287 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 275 transitions. Word has length 25 [2022-11-02 19:52:49,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:52:49,287 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 275 transitions. [2022-11-02 19:52:49,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 19:52:49,288 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 275 transitions. [2022-11-02 19:52:49,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-02 19:52:49,289 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:52:49,289 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:52:49,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 19:52:49,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:52:49,500 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:52:49,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:49,501 INFO L85 PathProgramCache]: Analyzing trace with hash -328716411, now seen corresponding path program 1 times [2022-11-02 19:52:49,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:52:49,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1844601284] [2022-11-02 19:52:49,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:49,502 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:52:49,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:52:49,503 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:52:49,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 19:52:49,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:49,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 19:52:49,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:52:49,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:52:49,712 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:52:49,712 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:52:49,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1844601284] [2022-11-02 19:52:49,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1844601284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:52:49,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:52:49,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 19:52:49,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663674993] [2022-11-02 19:52:49,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:52:49,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 19:52:49,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:52:49,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 19:52:49,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 19:52:49,715 INFO L87 Difference]: Start difference. First operand 229 states and 275 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 19:52:49,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:52:49,849 INFO L93 Difference]: Finished difference Result 229 states and 274 transitions. [2022-11-02 19:52:49,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 19:52:49,850 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2022-11-02 19:52:49,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:52:49,852 INFO L225 Difference]: With dead ends: 229 [2022-11-02 19:52:49,852 INFO L226 Difference]: Without dead ends: 229 [2022-11-02 19:52:49,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:52:49,853 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 114 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:52:49,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 808 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:52:49,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-11-02 19:52:49,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2022-11-02 19:52:49,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 146 states have (on average 1.7328767123287672) internal successors, (253), 212 states have internal predecessors, (253), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-02 19:52:49,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 274 transitions. [2022-11-02 19:52:49,863 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 274 transitions. Word has length 27 [2022-11-02 19:52:49,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:52:49,864 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 274 transitions. [2022-11-02 19:52:49,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 19:52:49,864 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 274 transitions. [2022-11-02 19:52:49,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-02 19:52:49,865 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:52:49,865 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] [2022-11-02 19:52:49,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 19:52:50,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:52:50,087 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:52:50,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:50,087 INFO L85 PathProgramCache]: Analyzing trace with hash -444952336, now seen corresponding path program 1 times [2022-11-02 19:52:50,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:52:50,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1471071476] [2022-11-02 19:52:50,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:50,088 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:52:50,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:52:50,089 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:52:50,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 19:52:50,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:50,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 19:52:50,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:52:50,335 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-02 19:52:50,406 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-02 19:52:50,406 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-02 19:52:50,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:52:50,497 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:52:50,497 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:52:50,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1471071476] [2022-11-02 19:52:50,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1471071476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:52:50,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:52:50,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:52:50,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302817896] [2022-11-02 19:52:50,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:52:50,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:52:50,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:52:50,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:52:50,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:52:50,500 INFO L87 Difference]: Start difference. First operand 229 states and 274 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 19:52:51,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:52:51,748 INFO L93 Difference]: Finished difference Result 242 states and 284 transitions. [2022-11-02 19:52:51,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 19:52:51,749 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2022-11-02 19:52:51,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:52:51,751 INFO L225 Difference]: With dead ends: 242 [2022-11-02 19:52:51,751 INFO L226 Difference]: Without dead ends: 242 [2022-11-02 19:52:51,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-02 19:52:51,752 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 191 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:52:51,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 537 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 19:52:51,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-11-02 19:52:51,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 225. [2022-11-02 19:52:51,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 146 states have (on average 1.678082191780822) internal successors, (245), 208 states have internal predecessors, (245), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-02 19:52:51,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 266 transitions. [2022-11-02 19:52:51,775 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 266 transitions. Word has length 33 [2022-11-02 19:52:51,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:52:51,775 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 266 transitions. [2022-11-02 19:52:51,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 19:52:51,776 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 266 transitions. [2022-11-02 19:52:51,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-02 19:52:51,777 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:52:51,777 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] [2022-11-02 19:52:51,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 19:52:51,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:52:51,990 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:52:51,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:51,991 INFO L85 PathProgramCache]: Analyzing trace with hash -444952335, now seen corresponding path program 1 times [2022-11-02 19:52:51,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:52:51,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2131964201] [2022-11-02 19:52:51,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:51,992 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:52:51,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:52:51,993 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:52:51,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 19:52:52,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:52,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 19:52:52,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:52:52,269 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 19:52:52,277 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-02 19:52:52,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:52:52,413 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-02 19:52:52,427 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-02 19:52:52,428 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-02 19:52:52,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:52:52,547 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:52:52,547 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:52:52,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2131964201] [2022-11-02 19:52:52,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2131964201] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:52:52,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:52:52,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 19:52:52,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228255327] [2022-11-02 19:52:52,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:52:52,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:52:52,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:52:52,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:52:52,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:52:52,549 INFO L87 Difference]: Start difference. First operand 225 states and 266 transitions. Second operand has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 19:52:53,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:52:53,797 INFO L93 Difference]: Finished difference Result 280 states and 309 transitions. [2022-11-02 19:52:53,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 19:52:53,798 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2022-11-02 19:52:53,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:52:53,800 INFO L225 Difference]: With dead ends: 280 [2022-11-02 19:52:53,800 INFO L226 Difference]: Without dead ends: 280 [2022-11-02 19:52:53,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:52:53,801 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 180 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 141 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:52:53,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 485 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 377 Invalid, 0 Unknown, 141 Unchecked, 1.2s Time] [2022-11-02 19:52:53,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-11-02 19:52:53,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 225. [2022-11-02 19:52:53,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 146 states have (on average 1.6506849315068493) internal successors, (241), 208 states have internal predecessors, (241), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-02 19:52:53,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 262 transitions. [2022-11-02 19:52:53,812 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 262 transitions. Word has length 33 [2022-11-02 19:52:53,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:52:53,813 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 262 transitions. [2022-11-02 19:52:53,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 19:52:53,813 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 262 transitions. [2022-11-02 19:52:53,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-02 19:52:53,814 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:52:53,814 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] [2022-11-02 19:52:53,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 19:52:54,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:52:54,026 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:52:54,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:54,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1897494371, now seen corresponding path program 1 times [2022-11-02 19:52:54,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:52:54,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [941187637] [2022-11-02 19:52:54,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:54,028 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:52:54,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:52:54,029 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:52:54,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 19:52:54,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:54,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 19:52:54,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:52:54,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:52:54,277 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:52:54,277 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:52:54,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [941187637] [2022-11-02 19:52:54,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [941187637] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:52:54,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:52:54,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:52:54,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554536859] [2022-11-02 19:52:54,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:52:54,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:52:54,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:52:54,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:52:54,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:52:54,281 INFO L87 Difference]: Start difference. First operand 225 states and 262 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 19:52:54,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:52:54,316 INFO L93 Difference]: Finished difference Result 267 states and 308 transitions. [2022-11-02 19:52:54,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 19:52:54,317 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2022-11-02 19:52:54,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:52:54,321 INFO L225 Difference]: With dead ends: 267 [2022-11-02 19:52:54,322 INFO L226 Difference]: Without dead ends: 267 [2022-11-02 19:52:54,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:52:54,323 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 36 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:52:54,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 574 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:52:54,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-11-02 19:52:54,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 229. [2022-11-02 19:52:54,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 150 states have (on average 1.6333333333333333) internal successors, (245), 212 states have internal predecessors, (245), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-02 19:52:54,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 266 transitions. [2022-11-02 19:52:54,340 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 266 transitions. Word has length 35 [2022-11-02 19:52:54,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:52:54,341 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 266 transitions. [2022-11-02 19:52:54,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 19:52:54,341 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 266 transitions. [2022-11-02 19:52:54,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-02 19:52:54,346 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:52:54,346 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] [2022-11-02 19:52:54,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-02 19:52:54,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:52:54,568 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:52:54,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:54,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1307216555, now seen corresponding path program 1 times [2022-11-02 19:52:54,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:52:54,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1196158363] [2022-11-02 19:52:54,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:54,570 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:52:54,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:52:54,572 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:52:54,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 19:52:54,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:54,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 19:52:54,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:52:55,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:52:55,370 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:52:55,370 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:52:55,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1196158363] [2022-11-02 19:52:55,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1196158363] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:52:55,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:52:55,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 19:52:55,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275562496] [2022-11-02 19:52:55,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:52:55,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:52:55,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:52:55,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:52:55,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:52:55,372 INFO L87 Difference]: Start difference. First operand 229 states and 266 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 19:52:55,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:52:55,383 INFO L93 Difference]: Finished difference Result 248 states and 286 transitions. [2022-11-02 19:52:55,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 19:52:55,384 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2022-11-02 19:52:55,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:52:55,386 INFO L225 Difference]: With dead ends: 248 [2022-11-02 19:52:55,386 INFO L226 Difference]: Without dead ends: 248 [2022-11-02 19:52:55,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:52:55,387 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 55 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:52:55,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 710 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 42 Unchecked, 0.0s Time] [2022-11-02 19:52:55,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-02 19:52:55,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2022-11-02 19:52:55,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 168 states have (on average 1.5773809523809523) internal successors, (265), 230 states have internal predecessors, (265), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-02 19:52:55,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 286 transitions. [2022-11-02 19:52:55,396 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 286 transitions. Word has length 36 [2022-11-02 19:52:55,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:52:55,396 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 286 transitions. [2022-11-02 19:52:55,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 19:52:55,397 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 286 transitions. [2022-11-02 19:52:55,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-02 19:52:55,398 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:52:55,398 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] [2022-11-02 19:52:55,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 19:52:55,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:52:55,614 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:52:55,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:55,615 INFO L85 PathProgramCache]: Analyzing trace with hash 359927496, now seen corresponding path program 1 times [2022-11-02 19:52:55,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:52:55,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1485448784] [2022-11-02 19:52:55,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:55,615 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:52:55,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:52:55,617 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:52:55,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 19:52:55,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:55,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 19:52:55,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:52:55,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:52:55,863 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:52:55,863 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:52:55,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1485448784] [2022-11-02 19:52:55,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1485448784] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:52:55,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:52:55,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:52:55,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870970742] [2022-11-02 19:52:55,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:52:55,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:52:55,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:52:55,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:52:55,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:52:55,865 INFO L87 Difference]: Start difference. First operand 248 states and 286 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 19:52:55,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:52:55,904 INFO L93 Difference]: Finished difference Result 271 states and 311 transitions. [2022-11-02 19:52:55,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 19:52:55,905 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-11-02 19:52:55,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:52:55,907 INFO L225 Difference]: With dead ends: 271 [2022-11-02 19:52:55,908 INFO L226 Difference]: Without dead ends: 271 [2022-11-02 19:52:55,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:52:55,909 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 43 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:52:55,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 572 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:52:55,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-11-02 19:52:55,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 250. [2022-11-02 19:52:55,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 170 states have (on average 1.5705882352941176) internal successors, (267), 232 states have internal predecessors, (267), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-02 19:52:55,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 288 transitions. [2022-11-02 19:52:55,919 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 288 transitions. Word has length 40 [2022-11-02 19:52:55,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:52:55,921 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 288 transitions. [2022-11-02 19:52:55,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 19:52:55,921 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 288 transitions. [2022-11-02 19:52:55,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-02 19:52:55,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:52:55,924 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:52:55,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 19:52:56,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:52:56,140 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:52:56,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:56,141 INFO L85 PathProgramCache]: Analyzing trace with hash -2125965028, now seen corresponding path program 1 times [2022-11-02 19:52:56,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:52:56,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1559263193] [2022-11-02 19:52:56,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:56,142 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:52:56,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:52:56,143 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:52:56,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 19:52:56,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:56,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 19:52:56,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:52:56,403 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-02 19:52:56,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:52:56,518 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:52:56,518 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:52:56,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1559263193] [2022-11-02 19:52:56,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1559263193] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:52:56,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:52:56,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 19:52:56,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50798085] [2022-11-02 19:52:56,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:52:56,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:52:56,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:52:56,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:52:56,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:52:56,520 INFO L87 Difference]: Start difference. First operand 250 states and 288 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 19:52:57,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:52:57,730 INFO L93 Difference]: Finished difference Result 292 states and 323 transitions. [2022-11-02 19:52:57,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 19:52:57,731 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2022-11-02 19:52:57,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:52:57,733 INFO L225 Difference]: With dead ends: 292 [2022-11-02 19:52:57,733 INFO L226 Difference]: Without dead ends: 292 [2022-11-02 19:52:57,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-02 19:52:57,734 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 124 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:52:57,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 811 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 19:52:57,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2022-11-02 19:52:57,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 249. [2022-11-02 19:52:57,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 170 states have (on average 1.5529411764705883) internal successors, (264), 231 states have internal predecessors, (264), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-02 19:52:57,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 285 transitions. [2022-11-02 19:52:57,743 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 285 transitions. Word has length 42 [2022-11-02 19:52:57,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:52:57,743 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 285 transitions. [2022-11-02 19:52:57,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 19:52:57,744 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 285 transitions. [2022-11-02 19:52:57,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-02 19:52:57,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:52:57,745 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:52:57,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 19:52:57,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:52:57,959 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:52:57,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:57,959 INFO L85 PathProgramCache]: Analyzing trace with hash -2125965027, now seen corresponding path program 1 times [2022-11-02 19:52:57,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:52:57,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1573498817] [2022-11-02 19:52:57,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:57,960 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:52:57,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:52:57,962 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:52:57,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 19:52:58,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:58,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 19:52:58,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:52:58,239 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 19:52:58,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:52:58,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:52:58,462 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:52:58,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1573498817] [2022-11-02 19:52:58,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1573498817] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:52:58,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:52:58,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 19:52:58,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521394173] [2022-11-02 19:52:58,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:52:58,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:52:58,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:52:58,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:52:58,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:52:58,465 INFO L87 Difference]: Start difference. First operand 249 states and 285 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 19:53:00,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:53:00,001 INFO L93 Difference]: Finished difference Result 318 states and 349 transitions. [2022-11-02 19:53:00,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 19:53:00,003 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2022-11-02 19:53:00,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:53:00,005 INFO L225 Difference]: With dead ends: 318 [2022-11-02 19:53:00,005 INFO L226 Difference]: Without dead ends: 318 [2022-11-02 19:53:00,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-02 19:53:00,006 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 146 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-02 19:53:00,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 839 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-02 19:53:00,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-11-02 19:53:00,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 249. [2022-11-02 19:53:00,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 170 states have (on average 1.5411764705882354) internal successors, (262), 231 states have internal predecessors, (262), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-02 19:53:00,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 283 transitions. [2022-11-02 19:53:00,016 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 283 transitions. Word has length 42 [2022-11-02 19:53:00,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:53:00,017 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 283 transitions. [2022-11-02 19:53:00,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 19:53:00,017 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 283 transitions. [2022-11-02 19:53:00,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-02 19:53:00,018 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:00,018 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:00,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-02 19:53:00,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:53:00,236 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:53:00,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:00,236 INFO L85 PathProgramCache]: Analyzing trace with hash -2001953137, now seen corresponding path program 1 times [2022-11-02 19:53:00,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:53:00,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1984016069] [2022-11-02 19:53:00,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:00,237 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:53:00,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:53:00,238 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:53:00,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 19:53:00,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:00,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-02 19:53:00,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:53:00,629 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-02 19:53:00,630 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-02 19:53:01,002 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-02 19:53:01,002 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 24 [2022-11-02 19:53:01,104 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-02 19:53:01,273 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-02 19:53:01,274 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-02 19:53:01,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:53:01,942 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-02 19:53:01,942 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 31 [2022-11-02 19:53:02,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:53:02,048 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:53:02,048 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:53:02,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1984016069] [2022-11-02 19:53:02,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1984016069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:02,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:53:02,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-02 19:53:02,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180979665] [2022-11-02 19:53:02,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:02,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 19:53:02,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:53:02,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 19:53:02,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-11-02 19:53:02,050 INFO L87 Difference]: Start difference. First operand 249 states and 283 transitions. Second operand has 16 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 19:53:02,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:53:02,644 INFO L93 Difference]: Finished difference Result 261 states and 298 transitions. [2022-11-02 19:53:02,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 19:53:02,645 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2022-11-02 19:53:02,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:53:02,647 INFO L225 Difference]: With dead ends: 261 [2022-11-02 19:53:02,647 INFO L226 Difference]: Without dead ends: 261 [2022-11-02 19:53:02,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:53:02,648 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 19 mSDsluCounter, 1473 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 514 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 19:53:02,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 1646 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 211 Invalid, 0 Unknown, 514 Unchecked, 0.5s Time] [2022-11-02 19:53:02,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2022-11-02 19:53:02,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 257. [2022-11-02 19:53:02,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 178 states have (on average 1.5280898876404494) internal successors, (272), 239 states have internal predecessors, (272), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-02 19:53:02,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 293 transitions. [2022-11-02 19:53:02,657 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 293 transitions. Word has length 42 [2022-11-02 19:53:02,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:53:02,658 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 293 transitions. [2022-11-02 19:53:02,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 19:53:02,658 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 293 transitions. [2022-11-02 19:53:02,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-02 19:53:02,659 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:02,659 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:02,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-02 19:53:02,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:53:02,875 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:53:02,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:02,876 INFO L85 PathProgramCache]: Analyzing trace with hash -2001953136, now seen corresponding path program 1 times [2022-11-02 19:53:02,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:53:02,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1035545230] [2022-11-02 19:53:02,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:02,877 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:53:02,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:53:02,878 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:53:02,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-02 19:53:03,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:03,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-02 19:53:03,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:53:03,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:53:03,361 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-02 19:53:03,396 INFO L356 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-02 19:53:03,397 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-02 19:53:03,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:53:03,771 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-02 19:53:03,988 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 19:53:03,988 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-02 19:53:04,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:53:04,278 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:53:04,278 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:53:04,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1035545230] [2022-11-02 19:53:04,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1035545230] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:04,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:53:04,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 19:53:04,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315521115] [2022-11-02 19:53:04,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:04,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 19:53:04,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:53:04,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 19:53:04,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-02 19:53:04,280 INFO L87 Difference]: Start difference. First operand 257 states and 293 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 19:53:05,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:53:05,828 INFO L93 Difference]: Finished difference Result 275 states and 310 transitions. [2022-11-02 19:53:05,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 19:53:05,829 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2022-11-02 19:53:05,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:53:05,831 INFO L225 Difference]: With dead ends: 275 [2022-11-02 19:53:05,831 INFO L226 Difference]: Without dead ends: 275 [2022-11-02 19:53:05,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-11-02 19:53:05,832 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 29 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 212 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-02 19:53:05,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1063 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 535 Invalid, 0 Unknown, 212 Unchecked, 1.4s Time] [2022-11-02 19:53:05,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2022-11-02 19:53:05,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 260. [2022-11-02 19:53:05,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 180 states have (on average 1.5222222222222221) internal successors, (274), 241 states have internal predecessors, (274), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-02 19:53:05,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 298 transitions. [2022-11-02 19:53:05,841 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 298 transitions. Word has length 42 [2022-11-02 19:53:05,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:53:05,842 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 298 transitions. [2022-11-02 19:53:05,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 19:53:05,842 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 298 transitions. [2022-11-02 19:53:05,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-02 19:53:05,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:05,843 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:05,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-02 19:53:06,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:53:06,059 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_LEAK === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:53:06,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:06,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1930984993, now seen corresponding path program 1 times [2022-11-02 19:53:06,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:53:06,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [451014287] [2022-11-02 19:53:06,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:06,061 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:53:06,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:53:06,063 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:53:06,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-02 19:53:06,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:06,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 19:53:06,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:53:06,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:53:06,321 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:53:06,321 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:53:06,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [451014287] [2022-11-02 19:53:06,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [451014287] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:06,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:53:06,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:53:06,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963148124] [2022-11-02 19:53:06,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:06,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:53:06,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:53:06,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:53:06,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:53:06,324 INFO L87 Difference]: Start difference. First operand 260 states and 298 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 19:53:06,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:53:06,360 INFO L93 Difference]: Finished difference Result 284 states and 321 transitions. [2022-11-02 19:53:06,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 19:53:06,361 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2022-11-02 19:53:06,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:53:06,363 INFO L225 Difference]: With dead ends: 284 [2022-11-02 19:53:06,363 INFO L226 Difference]: Without dead ends: 284 [2022-11-02 19:53:06,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:53:06,364 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 53 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:53:06,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 557 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:53:06,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-11-02 19:53:06,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 262. [2022-11-02 19:53:06,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 182 states have (on average 1.510989010989011) internal successors, (275), 243 states have internal predecessors, (275), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-02 19:53:06,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 299 transitions. [2022-11-02 19:53:06,381 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 299 transitions. Word has length 43 [2022-11-02 19:53:06,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:53:06,382 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 299 transitions. [2022-11-02 19:53:06,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 19:53:06,382 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 299 transitions. [2022-11-02 19:53:06,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-02 19:53:06,385 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:06,385 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:06,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-02 19:53:06,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:53:06,599 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:53:06,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:06,600 INFO L85 PathProgramCache]: Analyzing trace with hash -269786093, now seen corresponding path program 1 times [2022-11-02 19:53:06,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:53:06,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [242790882] [2022-11-02 19:53:06,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:06,601 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:53:06,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:53:06,602 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:53:06,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-02 19:53:06,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:06,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-02 19:53:06,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:53:06,938 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-02 19:53:07,168 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 19:53:07,269 INFO L356 Elim1Store]: treesize reduction 70, result has 30.7 percent of original size [2022-11-02 19:53:07,269 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 51 [2022-11-02 19:53:07,348 INFO L356 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-02 19:53:07,348 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2022-11-02 19:53:07,840 INFO L356 Elim1Store]: treesize reduction 70, result has 30.7 percent of original size [2022-11-02 19:53:07,840 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 51 [2022-11-02 19:53:08,308 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2022-11-02 19:53:08,628 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2022-11-02 19:53:09,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:53:09,280 INFO L356 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-02 19:53:09,280 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 43 [2022-11-02 19:53:09,508 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-02 19:53:09,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:53:09,632 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:53:09,632 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:53:09,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [242790882] [2022-11-02 19:53:09,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [242790882] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:09,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:53:09,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-02 19:53:09,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236701554] [2022-11-02 19:53:09,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:09,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 19:53:09,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:53:09,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 19:53:09,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2022-11-02 19:53:09,634 INFO L87 Difference]: Start difference. First operand 262 states and 299 transitions. Second operand has 19 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 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) [2022-11-02 19:53:10,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:53:10,895 INFO L93 Difference]: Finished difference Result 314 states and 353 transitions. [2022-11-02 19:53:10,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 19:53:10,896 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 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 45 [2022-11-02 19:53:10,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:53:10,898 INFO L225 Difference]: With dead ends: 314 [2022-11-02 19:53:10,898 INFO L226 Difference]: Without dead ends: 314 [2022-11-02 19:53:10,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2022-11-02 19:53:10,899 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 150 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 1338 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 442 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 19:53:10,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 1338 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 441 Invalid, 0 Unknown, 442 Unchecked, 0.9s Time] [2022-11-02 19:53:10,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2022-11-02 19:53:10,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 286. [2022-11-02 19:53:10,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 203 states have (on average 1.541871921182266) internal successors, (313), 264 states have internal predecessors, (313), 11 states have call successors, (11), 10 states have call predecessors, (11), 11 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2022-11-02 19:53:10,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 338 transitions. [2022-11-02 19:53:10,908 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 338 transitions. Word has length 45 [2022-11-02 19:53:10,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:53:10,908 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 338 transitions. [2022-11-02 19:53:10,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 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) [2022-11-02 19:53:10,909 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 338 transitions. [2022-11-02 19:53:10,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-02 19:53:10,909 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:10,910 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:10,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-02 19:53:11,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:53:11,126 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:53:11,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:11,126 INFO L85 PathProgramCache]: Analyzing trace with hash -269786092, now seen corresponding path program 1 times [2022-11-02 19:53:11,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:53:11,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2146508627] [2022-11-02 19:53:11,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:11,127 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:53:11,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:53:11,128 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:53:11,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-02 19:53:11,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:11,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-02 19:53:11,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:53:11,467 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-02 19:53:11,484 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 19:53:11,971 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 19:53:11,984 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 19:53:12,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:53:12,109 INFO L356 Elim1Store]: treesize reduction 36, result has 25.0 percent of original size [2022-11-02 19:53:12,110 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 43 [2022-11-02 19:53:12,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:53:12,145 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-02 19:53:12,285 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-02 19:53:12,314 INFO L356 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-02 19:53:12,314 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2022-11-02 19:53:12,889 INFO L356 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-02 19:53:12,889 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 26 [2022-11-02 19:53:12,964 INFO L356 Elim1Store]: treesize reduction 26, result has 33.3 percent of original size [2022-11-02 19:53:12,965 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 26 [2022-11-02 19:53:13,432 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 19:53:13,452 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-11-02 19:53:13,646 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-11-02 19:53:13,657 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 19:53:14,457 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-02 19:53:14,466 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-02 19:53:14,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:53:14,810 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:53:14,810 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:53:14,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2146508627] [2022-11-02 19:53:14,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2146508627] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:14,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:53:14,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 19:53:14,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696855118] [2022-11-02 19:53:14,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:14,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-02 19:53:14,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:53:14,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-02 19:53:14,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2022-11-02 19:53:14,813 INFO L87 Difference]: Start difference. First operand 286 states and 338 transitions. Second operand has 21 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 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) [2022-11-02 19:53:16,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:53:16,083 INFO L93 Difference]: Finished difference Result 286 states and 337 transitions. [2022-11-02 19:53:16,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 19:53:16,087 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 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 45 [2022-11-02 19:53:16,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:53:16,088 INFO L225 Difference]: With dead ends: 286 [2022-11-02 19:53:16,088 INFO L226 Difference]: Without dead ends: 286 [2022-11-02 19:53:16,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2022-11-02 19:53:16,089 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 28 mSDsluCounter, 1326 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1498 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 400 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 19:53:16,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1498 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 221 Invalid, 0 Unknown, 400 Unchecked, 0.8s Time] [2022-11-02 19:53:16,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-11-02 19:53:16,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2022-11-02 19:53:16,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 203 states have (on average 1.5369458128078817) internal successors, (312), 264 states have internal predecessors, (312), 11 states have call successors, (11), 10 states have call predecessors, (11), 11 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2022-11-02 19:53:16,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 337 transitions. [2022-11-02 19:53:16,100 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 337 transitions. Word has length 45 [2022-11-02 19:53:16,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:53:16,100 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 337 transitions. [2022-11-02 19:53:16,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 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) [2022-11-02 19:53:16,101 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 337 transitions. [2022-11-02 19:53:16,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-02 19:53:16,101 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:16,102 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:16,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-02 19:53:16,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:53:16,314 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:53:16,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:16,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1036278110, now seen corresponding path program 1 times [2022-11-02 19:53:16,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:53:16,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [815142078] [2022-11-02 19:53:16,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:16,316 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:53:16,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:53:16,317 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:53:16,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-02 19:53:16,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:16,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-02 19:53:16,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:53:16,854 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-02 19:53:16,855 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 16 [2022-11-02 19:53:17,083 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-02 19:53:17,084 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-02 19:53:17,259 INFO L356 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2022-11-02 19:53:17,259 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 43 [2022-11-02 19:53:17,540 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 19:53:17,791 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-02 19:53:18,088 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 19:53:18,131 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 19:53:18,209 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 19:53:18,274 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 19:53:18,680 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-02 19:53:18,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:53:18,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:53:18,987 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:53:18,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [815142078] [2022-11-02 19:53:18,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [815142078] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:18,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:53:18,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 19:53:18,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356161194] [2022-11-02 19:53:18,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:18,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 19:53:18,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:53:18,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 19:53:18,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2022-11-02 19:53:18,989 INFO L87 Difference]: Start difference. First operand 286 states and 337 transitions. Second operand has 20 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 18 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 19:53:19,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:53:19,774 INFO L93 Difference]: Finished difference Result 304 states and 362 transitions. [2022-11-02 19:53:19,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 19:53:19,775 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 18 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2022-11-02 19:53:19,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:53:19,777 INFO L225 Difference]: With dead ends: 304 [2022-11-02 19:53:19,777 INFO L226 Difference]: Without dead ends: 304 [2022-11-02 19:53:19,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=60, Invalid=492, Unknown=0, NotChecked=0, Total=552 [2022-11-02 19:53:19,778 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 66 mSDsluCounter, 1374 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 746 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 19:53:19,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 1520 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 371 Invalid, 0 Unknown, 746 Unchecked, 0.6s Time] [2022-11-02 19:53:19,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-11-02 19:53:19,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 290. [2022-11-02 19:53:19,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 207 states have (on average 1.5314009661835748) internal successors, (317), 268 states have internal predecessors, (317), 11 states have call successors, (11), 10 states have call predecessors, (11), 11 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2022-11-02 19:53:19,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 342 transitions. [2022-11-02 19:53:19,787 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 342 transitions. Word has length 45 [2022-11-02 19:53:19,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:53:19,787 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 342 transitions. [2022-11-02 19:53:19,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 18 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 19:53:19,788 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 342 transitions. [2022-11-02 19:53:19,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-02 19:53:19,788 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:19,788 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:19,806 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-11-02 19:53:20,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:53:20,006 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:53:20,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:20,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1036278109, now seen corresponding path program 1 times [2022-11-02 19:53:20,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:53:20,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [110937283] [2022-11-02 19:53:20,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:20,007 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:53:20,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:53:20,008 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:53:20,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-02 19:53:20,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:20,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 69 conjunts are in the unsatisfiable core [2022-11-02 19:53:20,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:53:20,484 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-02 19:53:20,484 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-02 19:53:20,665 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-02 19:53:20,666 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-02 19:53:20,699 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-02 19:53:20,700 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-02 19:53:20,803 INFO L356 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-02 19:53:20,804 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 11 [2022-11-02 19:53:20,813 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-02 19:53:21,067 INFO L356 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2022-11-02 19:53:21,067 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-11-02 19:53:21,100 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-02 19:53:21,100 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 24 [2022-11-02 19:53:21,428 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 19:53:21,437 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 19:53:21,668 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-02 19:53:21,691 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 12 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-02 19:53:21,943 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-02 19:53:21,943 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-02 19:53:21,949 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-02 19:53:21,998 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-02 19:53:21,999 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-02 19:53:22,008 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-02 19:53:22,167 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-02 19:53:22,167 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-02 19:53:22,177 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-02 19:53:22,223 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-02 19:53:22,223 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-02 19:53:22,233 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-02 19:53:22,422 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-02 19:53:22,423 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-02 19:53:22,432 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-02 19:53:22,479 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-02 19:53:22,479 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-02 19:53:22,485 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-02 19:53:22,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:53:22,692 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 19:53:22,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:53:22,707 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 19:53:23,069 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-02 19:53:23,075 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-02 19:53:23,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:53:23,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:53:23,337 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:53:23,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [110937283] [2022-11-02 19:53:23,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [110937283] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:23,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:53:23,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-02 19:53:23,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770974078] [2022-11-02 19:53:23,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:23,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-02 19:53:23,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:53:23,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-02 19:53:23,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2022-11-02 19:53:23,339 INFO L87 Difference]: Start difference. First operand 290 states and 342 transitions. Second operand has 22 states, 20 states have (on average 1.95) internal successors, (39), 18 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 19:53:25,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:53:25,531 INFO L93 Difference]: Finished difference Result 304 states and 361 transitions. [2022-11-02 19:53:25,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 19:53:25,532 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 1.95) internal successors, (39), 18 states have internal predecessors, (39), 3 states have call successors, (3), 3 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 45 [2022-11-02 19:53:25,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:53:25,534 INFO L225 Difference]: With dead ends: 304 [2022-11-02 19:53:25,534 INFO L226 Difference]: Without dead ends: 304 [2022-11-02 19:53:25,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=129, Invalid=927, Unknown=0, NotChecked=0, Total=1056 [2022-11-02 19:53:25,535 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 84 mSDsluCounter, 1350 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 1539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 726 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-02 19:53:25,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 1493 Invalid, 1539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 781 Invalid, 0 Unknown, 726 Unchecked, 1.4s Time] [2022-11-02 19:53:25,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-11-02 19:53:25,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 290. [2022-11-02 19:53:25,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 207 states have (on average 1.5265700483091786) internal successors, (316), 268 states have internal predecessors, (316), 11 states have call successors, (11), 10 states have call predecessors, (11), 11 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2022-11-02 19:53:25,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 341 transitions. [2022-11-02 19:53:25,544 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 341 transitions. Word has length 45 [2022-11-02 19:53:25,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:53:25,544 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 341 transitions. [2022-11-02 19:53:25,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 1.95) internal successors, (39), 18 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 19:53:25,544 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 341 transitions. [2022-11-02 19:53:25,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-02 19:53:25,545 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:25,545 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:25,561 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-11-02 19:53:25,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:53:25,761 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:53:25,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:25,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1566398444, now seen corresponding path program 1 times [2022-11-02 19:53:25,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:53:25,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [152942785] [2022-11-02 19:53:25,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:25,762 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:53:25,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:53:25,778 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:53:25,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-02 19:53:26,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:26,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 70 conjunts are in the unsatisfiable core [2022-11-02 19:53:26,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:53:26,275 INFO L356 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-11-02 19:53:26,275 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 41 [2022-11-02 19:53:26,728 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 19:53:26,808 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 19:53:27,151 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-02 19:53:27,191 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 19:53:27,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:53:27,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:53:27,352 INFO L356 Elim1Store]: treesize reduction 36, result has 25.0 percent of original size [2022-11-02 19:53:27,353 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 61 [2022-11-02 19:53:27,580 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:53:27,580 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 36 [2022-11-02 19:53:28,178 INFO L356 Elim1Store]: treesize reduction 22, result has 55.1 percent of original size [2022-11-02 19:53:28,178 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 51 [2022-11-02 19:53:28,623 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-02 19:53:28,624 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 45 [2022-11-02 19:53:28,674 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 19:53:28,844 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-02 19:53:28,845 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 45 [2022-11-02 19:53:28,856 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 19:53:29,707 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-02 19:53:30,203 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:53:30,203 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 61 treesize of output 28 [2022-11-02 19:53:30,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:53:30,523 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:53:30,523 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:53:30,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [152942785] [2022-11-02 19:53:30,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [152942785] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:30,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:53:30,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-11-02 19:53:30,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865915590] [2022-11-02 19:53:30,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:30,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-02 19:53:30,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:53:30,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-02 19:53:30,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-11-02 19:53:30,525 INFO L87 Difference]: Start difference. First operand 290 states and 341 transitions. Second operand has 27 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 20 states have internal predecessors, (40), 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) [2022-11-02 19:53:31,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:53:31,818 INFO L93 Difference]: Finished difference Result 290 states and 340 transitions. [2022-11-02 19:53:31,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-02 19:53:31,819 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 20 states have internal predecessors, (40), 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 47 [2022-11-02 19:53:31,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:53:31,820 INFO L225 Difference]: With dead ends: 290 [2022-11-02 19:53:31,821 INFO L226 Difference]: Without dead ends: 290 [2022-11-02 19:53:31,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=105, Invalid=951, Unknown=0, NotChecked=0, Total=1056 [2022-11-02 19:53:31,822 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 16 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1740 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 478 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 19:53:31,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 1740 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 307 Invalid, 0 Unknown, 478 Unchecked, 0.7s Time] [2022-11-02 19:53:31,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-11-02 19:53:31,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2022-11-02 19:53:31,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 207 states have (on average 1.5217391304347827) internal successors, (315), 268 states have internal predecessors, (315), 11 states have call successors, (11), 10 states have call predecessors, (11), 11 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2022-11-02 19:53:31,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 340 transitions. [2022-11-02 19:53:31,830 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 340 transitions. Word has length 47 [2022-11-02 19:53:31,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:53:31,830 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 340 transitions. [2022-11-02 19:53:31,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 20 states have internal predecessors, (40), 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) [2022-11-02 19:53:31,831 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 340 transitions. [2022-11-02 19:53:31,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-02 19:53:31,831 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:31,831 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:31,846 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-11-02 19:53:32,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:53:32,046 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting free_reportsErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:53:32,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:32,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1566398443, now seen corresponding path program 1 times [2022-11-02 19:53:32,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:53:32,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1955780596] [2022-11-02 19:53:32,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:32,047 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:53:32,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:53:32,049 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:53:32,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-02 19:53:32,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:32,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 84 conjunts are in the unsatisfiable core [2022-11-02 19:53:32,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:53:32,514 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 19:53:32,600 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-02 19:53:32,601 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-02 19:53:32,882 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 19:53:32,911 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 19:53:32,983 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 19:53:32,996 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 19:53:33,272 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-02 19:53:33,291 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-02 19:53:33,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:53:33,395 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-02 19:53:33,440 INFO L356 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2022-11-02 19:53:33,440 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 51 [2022-11-02 19:53:33,635 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 9 treesize of output 3 [2022-11-02 19:53:33,666 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-02 19:53:34,244 INFO L356 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-02 19:53:34,245 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2022-11-02 19:53:34,259 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-02 19:53:35,168 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2022-11-02 19:53:35,198 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-02 19:53:35,198 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 62 [2022-11-02 19:53:35,477 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-02 19:53:35,477 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 62 [2022-11-02 19:53:35,495 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2022-11-02 19:53:36,385 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-02 19:53:36,385 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 31 [2022-11-02 19:53:36,393 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:53:36,394 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 44 treesize of output 19 [2022-11-02 19:53:36,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:53:36,558 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:53:36,558 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:53:36,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1955780596] [2022-11-02 19:53:36,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1955780596] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:36,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:53:36,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-02 19:53:36,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837446041] [2022-11-02 19:53:36,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:36,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-02 19:53:36,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:53:36,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-02 19:53:36,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=672, Unknown=0, NotChecked=0, Total=756 [2022-11-02 19:53:36,561 INFO L87 Difference]: Start difference. First operand 290 states and 340 transitions. Second operand has 28 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 20 states have internal predecessors, (40), 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) [2022-11-02 19:53:38,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:53:38,940 INFO L93 Difference]: Finished difference Result 298 states and 339 transitions. [2022-11-02 19:53:38,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-02 19:53:38,941 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 20 states have internal predecessors, (40), 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 47 [2022-11-02 19:53:38,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:53:38,942 INFO L225 Difference]: With dead ends: 298 [2022-11-02 19:53:38,942 INFO L226 Difference]: Without dead ends: 298 [2022-11-02 19:53:38,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=136, Invalid=1124, Unknown=0, NotChecked=0, Total=1260 [2022-11-02 19:53:38,943 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 42 mSDsluCounter, 1624 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 1427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 664 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-02 19:53:38,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 1789 Invalid, 1427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 751 Invalid, 0 Unknown, 664 Unchecked, 1.7s Time] [2022-11-02 19:53:38,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-11-02 19:53:38,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 285. [2022-11-02 19:53:38,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 202 states have (on average 1.504950495049505) internal successors, (304), 263 states have internal predecessors, (304), 11 states have call successors, (11), 10 states have call predecessors, (11), 11 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2022-11-02 19:53:38,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 329 transitions. [2022-11-02 19:53:38,951 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 329 transitions. Word has length 47 [2022-11-02 19:53:38,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:53:38,951 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 329 transitions. [2022-11-02 19:53:38,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 20 states have internal predecessors, (40), 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) [2022-11-02 19:53:38,951 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 329 transitions. [2022-11-02 19:53:38,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-02 19:53:38,952 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:38,952 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:38,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-02 19:53:39,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:53:39,167 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:53:39,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:39,167 INFO L85 PathProgramCache]: Analyzing trace with hash 463879875, now seen corresponding path program 1 times [2022-11-02 19:53:39,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:53:39,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1527337815] [2022-11-02 19:53:39,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:39,168 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:53:39,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:53:39,170 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:53:39,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-02 19:53:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:39,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 76 conjunts are in the unsatisfiable core [2022-11-02 19:53:39,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:53:39,956 INFO L356 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-11-02 19:53:39,956 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2022-11-02 19:53:40,319 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 19:53:40,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:53:40,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:53:40,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:53:40,440 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 51 [2022-11-02 19:53:40,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:53:40,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:53:40,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:53:40,561 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2022-11-02 19:53:40,968 INFO L356 Elim1Store]: treesize reduction 134, result has 28.3 percent of original size [2022-11-02 19:53:40,968 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 44 treesize of output 83 [2022-11-02 19:53:41,548 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 41 [2022-11-02 19:53:41,597 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 19:53:41,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:53:41,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:53:41,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:53:41,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:53:41,998 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-02 19:53:41,999 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 80 [2022-11-02 19:53:42,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:53:42,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:53:42,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:53:42,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:53:42,056 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 12 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-02 19:53:42,432 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-02 19:53:42,432 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-02 19:53:42,441 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-02 19:53:42,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:53:42,500 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-02 19:53:42,500 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 64 treesize of output 59 [2022-11-02 19:53:42,674 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-02 19:53:42,675 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-02 19:53:42,680 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-02 19:53:42,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:53:42,729 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-02 19:53:42,729 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 64 treesize of output 59 [2022-11-02 19:53:42,960 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-02 19:53:42,960 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-02 19:53:42,969 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-02 19:53:43,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:53:43,026 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-02 19:53:43,027 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 64 treesize of output 59 [2022-11-02 19:53:43,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:53:43,282 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-02 19:53:43,282 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 64 treesize of output 59 [2022-11-02 19:53:43,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:53:43,308 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 19:53:44,217 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-02 19:53:44,775 INFO L356 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2022-11-02 19:53:44,775 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 43 [2022-11-02 19:53:45,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:53:45,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:53:45,213 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:53:45,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1527337815] [2022-11-02 19:53:45,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1527337815] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:45,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:53:45,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-02 19:53:45,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784734783] [2022-11-02 19:53:45,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:45,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-02 19:53:45,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:53:45,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-02 19:53:45,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552 [2022-11-02 19:53:45,216 INFO L87 Difference]: Start difference. First operand 285 states and 329 transitions. Second operand has 24 states, 21 states have (on average 2.0) internal successors, (42), 20 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 19:53:46,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:53:46,810 INFO L93 Difference]: Finished difference Result 302 states and 351 transitions. [2022-11-02 19:53:46,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-02 19:53:46,811 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 2.0) internal successors, (42), 20 states have internal predecessors, (42), 3 states have call successors, (3), 3 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 48 [2022-11-02 19:53:46,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:53:46,812 INFO L225 Difference]: With dead ends: 302 [2022-11-02 19:53:46,812 INFO L226 Difference]: Without dead ends: 302 [2022-11-02 19:53:46,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=101, Invalid=891, Unknown=0, NotChecked=0, Total=992 [2022-11-02 19:53:46,813 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 35 mSDsluCounter, 1945 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2112 SdHoareTripleChecker+Invalid, 1335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 884 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 19:53:46,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 2112 Invalid, 1335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 440 Invalid, 0 Unknown, 884 Unchecked, 0.8s Time] [2022-11-02 19:53:46,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2022-11-02 19:53:46,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 288. [2022-11-02 19:53:46,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 205 states have (on average 1.5073170731707317) internal successors, (309), 266 states have internal predecessors, (309), 11 states have call successors, (11), 10 states have call predecessors, (11), 11 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2022-11-02 19:53:46,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 334 transitions. [2022-11-02 19:53:46,821 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 334 transitions. Word has length 48 [2022-11-02 19:53:46,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:53:46,821 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 334 transitions. [2022-11-02 19:53:46,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 2.0) internal successors, (42), 20 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 19:53:46,821 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 334 transitions. [2022-11-02 19:53:46,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-02 19:53:46,822 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:46,822 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:46,838 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-11-02 19:53:47,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:53:47,034 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:53:47,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:47,035 INFO L85 PathProgramCache]: Analyzing trace with hash 463879876, now seen corresponding path program 1 times [2022-11-02 19:53:47,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:53:47,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [331546513] [2022-11-02 19:53:47,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:47,035 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:53:47,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:53:47,036 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:53:47,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-02 19:53:47,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:47,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 104 conjunts are in the unsatisfiable core [2022-11-02 19:53:47,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:53:47,865 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 19:53:47,981 INFO L356 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-11-02 19:53:47,982 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2022-11-02 19:53:48,490 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 19:53:48,501 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 19:53:48,640 INFO L356 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-02 19:53:48,640 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 26 [2022-11-02 19:53:48,714 INFO L356 Elim1Store]: treesize reduction 78, result has 35.0 percent of original size [2022-11-02 19:53:48,714 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 67 [2022-11-02 19:53:48,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:53:48,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:53:48,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:53:48,931 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2022-11-02 19:53:48,948 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-02 19:53:49,359 INFO L356 Elim1Store]: treesize reduction 58, result has 26.6 percent of original size [2022-11-02 19:53:49,359 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 38 treesize of output 44 [2022-11-02 19:53:49,438 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-02 19:53:49,918 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-02 19:53:49,934 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 39 [2022-11-02 19:53:50,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:53:50,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:53:50,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:53:50,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:53:50,676 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-02 19:53:50,677 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 57 [2022-11-02 19:53:50,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:53:50,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:53:50,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:53:50,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:53:50,706 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-02 19:53:50,707 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 78 [2022-11-02 19:53:50,761 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 37 [2022-11-02 19:53:51,474 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-02 19:53:51,475 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 57 [2022-11-02 19:53:51,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:53:51,531 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-02 19:53:51,532 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2022-11-02 19:53:51,552 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-02 19:53:51,770 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-02 19:53:51,770 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 57 [2022-11-02 19:53:51,803 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-02 19:53:51,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:53:51,857 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-02 19:53:51,857 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2022-11-02 19:53:52,129 INFO L356 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-02 19:53:52,130 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 30 [2022-11-02 19:53:52,151 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-02 19:53:52,193 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-02 19:53:52,194 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 57 [2022-11-02 19:53:52,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:53:52,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:53:52,487 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-02 19:53:52,502 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-02 19:53:52,541 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-02 19:53:52,541 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 57 [2022-11-02 19:53:56,816 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 22 [2022-11-02 19:53:57,403 INFO L356 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2022-11-02 19:53:57,403 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 86 treesize of output 52 [2022-11-02 19:53:57,447 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-02 19:53:57,447 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2022-11-02 19:53:57,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:53:57,899 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:53:57,899 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:53:57,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [331546513] [2022-11-02 19:53:57,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [331546513] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:57,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:53:57,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-11-02 19:53:57,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811041562] [2022-11-02 19:53:57,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:57,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-02 19:53:57,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:53:57,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-02 19:53:57,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=743, Unknown=0, NotChecked=0, Total=812 [2022-11-02 19:53:57,901 INFO L87 Difference]: Start difference. First operand 288 states and 334 transitions. Second operand has 29 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 24 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 19:54:00,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:00,149 INFO L93 Difference]: Finished difference Result 320 states and 370 transitions. [2022-11-02 19:54:00,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-02 19:54:00,150 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 24 states have internal predecessors, (42), 3 states have call successors, (3), 3 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 48 [2022-11-02 19:54:00,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:00,151 INFO L225 Difference]: With dead ends: 320 [2022-11-02 19:54:00,151 INFO L226 Difference]: Without dead ends: 320 [2022-11-02 19:54:00,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=121, Invalid=1285, Unknown=0, NotChecked=0, Total=1406 [2022-11-02 19:54:00,152 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 72 mSDsluCounter, 1794 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 1932 SdHoareTripleChecker+Invalid, 2013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1385 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:54:00,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 1932 Invalid, 2013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 612 Invalid, 0 Unknown, 1385 Unchecked, 1.2s Time] [2022-11-02 19:54:00,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-11-02 19:54:00,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 309. [2022-11-02 19:54:00,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 226 states have (on average 1.4734513274336283) internal successors, (333), 287 states have internal predecessors, (333), 11 states have call successors, (11), 10 states have call predecessors, (11), 11 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2022-11-02 19:54:00,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 358 transitions. [2022-11-02 19:54:00,160 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 358 transitions. Word has length 48 [2022-11-02 19:54:00,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:00,160 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 358 transitions. [2022-11-02 19:54:00,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 24 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 19:54:00,161 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 358 transitions. [2022-11-02 19:54:00,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-02 19:54:00,161 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:00,161 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:00,179 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-11-02 19:54:00,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:54:00,379 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:54:00,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:00,379 INFO L85 PathProgramCache]: Analyzing trace with hash 245025158, now seen corresponding path program 1 times [2022-11-02 19:54:00,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:54:00,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1872778267] [2022-11-02 19:54:00,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:00,380 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:54:00,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:54:00,381 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:54:00,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-02 19:54:01,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:01,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 90 conjunts are in the unsatisfiable core [2022-11-02 19:54:01,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:54:01,188 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 19:54:01,303 INFO L356 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-11-02 19:54:01,304 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2022-11-02 19:54:01,785 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 19:54:01,813 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 19:54:01,929 INFO L356 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-02 19:54:01,929 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 26 [2022-11-02 19:54:02,019 INFO L356 Elim1Store]: treesize reduction 78, result has 35.0 percent of original size [2022-11-02 19:54:02,020 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 67 [2022-11-02 19:54:02,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:54:02,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:54:02,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:54:02,230 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2022-11-02 19:54:02,241 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-02 19:54:02,646 INFO L356 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-02 19:54:02,646 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 26 [2022-11-02 19:54:02,707 INFO L356 Elim1Store]: treesize reduction 58, result has 26.6 percent of original size [2022-11-02 19:54:02,707 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 38 treesize of output 44 [2022-11-02 19:54:03,212 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-02 19:54:03,223 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 39 [2022-11-02 19:54:03,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:54:03,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:54:03,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:54:03,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:54:03,601 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-02 19:54:03,602 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 57 [2022-11-02 19:54:03,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:54:03,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:54:03,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:54:03,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:54:03,631 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-02 19:54:03,631 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 78 [2022-11-02 19:54:04,004 INFO L356 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-02 19:54:04,005 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 30 [2022-11-02 19:54:04,041 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-02 19:54:04,041 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 57 [2022-11-02 19:54:04,240 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-02 19:54:04,240 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 57 [2022-11-02 19:54:04,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:54:04,306 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-02 19:54:04,306 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2022-11-02 19:54:04,528 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-02 19:54:04,528 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 57 [2022-11-02 19:54:04,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:54:04,594 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-02 19:54:04,595 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2022-11-02 19:54:04,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:54:04,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:54:04,808 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-02 19:54:04,844 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-02 19:54:04,845 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 57 [2022-11-02 19:54:08,800 INFO L356 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2022-11-02 19:54:08,801 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 86 treesize of output 52 [2022-11-02 19:54:08,841 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-02 19:54:08,841 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2022-11-02 19:54:09,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:54:09,289 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:54:09,289 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:54:09,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1872778267] [2022-11-02 19:54:09,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1872778267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:09,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:09,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-02 19:54:09,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915593862] [2022-11-02 19:54:09,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:09,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-02 19:54:09,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:54:09,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-02 19:54:09,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=590, Unknown=1, NotChecked=0, Total=650 [2022-11-02 19:54:09,291 INFO L87 Difference]: Start difference. First operand 309 states and 358 transitions. Second operand has 26 states, 23 states have (on average 1.826086956521739) internal successors, (42), 21 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 19:54:11,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:11,516 INFO L93 Difference]: Finished difference Result 336 states and 389 transitions. [2022-11-02 19:54:11,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-02 19:54:11,516 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 1.826086956521739) internal successors, (42), 21 states have internal predecessors, (42), 3 states have call successors, (3), 3 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 48 [2022-11-02 19:54:11,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:11,517 INFO L225 Difference]: With dead ends: 336 [2022-11-02 19:54:11,517 INFO L226 Difference]: Without dead ends: 336 [2022-11-02 19:54:11,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=111, Invalid=1078, Unknown=1, NotChecked=0, Total=1190 [2022-11-02 19:54:11,519 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 86 mSDsluCounter, 1971 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 2123 SdHoareTripleChecker+Invalid, 2041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1361 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:54:11,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 2123 Invalid, 2041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 664 Invalid, 0 Unknown, 1361 Unchecked, 1.3s Time] [2022-11-02 19:54:11,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2022-11-02 19:54:11,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 288. [2022-11-02 19:54:11,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 205 states have (on average 1.502439024390244) internal successors, (308), 266 states have internal predecessors, (308), 11 states have call successors, (11), 10 states have call predecessors, (11), 11 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2022-11-02 19:54:11,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 333 transitions. [2022-11-02 19:54:11,526 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 333 transitions. Word has length 48 [2022-11-02 19:54:11,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:11,526 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 333 transitions. [2022-11-02 19:54:11,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 1.826086956521739) internal successors, (42), 21 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 19:54:11,528 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 333 transitions. [2022-11-02 19:54:11,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-02 19:54:11,533 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:11,533 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:11,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-02 19:54:11,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:54:11,751 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:54:11,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:11,751 INFO L85 PathProgramCache]: Analyzing trace with hash -2098722122, now seen corresponding path program 1 times [2022-11-02 19:54:11,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:54:11,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1304306839] [2022-11-02 19:54:11,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:11,752 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:54:11,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:54:11,753 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:54:11,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-02 19:54:12,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:12,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 19:54:12,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:54:12,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:54:12,054 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:54:12,055 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:54:12,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1304306839] [2022-11-02 19:54:12,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1304306839] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:12,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:12,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:54:12,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449565891] [2022-11-02 19:54:12,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:12,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:54:12,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:54:12,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:54:12,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:54:12,057 INFO L87 Difference]: Start difference. First operand 288 states and 333 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 19:54:12,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:12,083 INFO L93 Difference]: Finished difference Result 307 states and 350 transitions. [2022-11-02 19:54:12,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 19:54:12,084 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 49 [2022-11-02 19:54:12,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:12,085 INFO L225 Difference]: With dead ends: 307 [2022-11-02 19:54:12,085 INFO L226 Difference]: Without dead ends: 307 [2022-11-02 19:54:12,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:54:12,086 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 77 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:54:12,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 560 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:54:12,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-11-02 19:54:12,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 286. [2022-11-02 19:54:12,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 203 states have (on average 1.4926108374384237) internal successors, (303), 264 states have internal predecessors, (303), 11 states have call successors, (11), 10 states have call predecessors, (11), 11 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2022-11-02 19:54:12,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 328 transitions. [2022-11-02 19:54:12,093 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 328 transitions. Word has length 49 [2022-11-02 19:54:12,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:12,093 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 328 transitions. [2022-11-02 19:54:12,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 19:54:12,094 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 328 transitions. [2022-11-02 19:54:12,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-02 19:54:12,094 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:12,094 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:12,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-02 19:54:12,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:54:12,308 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:54:12,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:12,309 INFO L85 PathProgramCache]: Analyzing trace with hash -888034331, now seen corresponding path program 1 times [2022-11-02 19:54:12,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:54:12,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1157029678] [2022-11-02 19:54:12,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:12,310 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:54:12,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:54:12,311 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:54:12,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-02 19:54:12,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:12,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 19:54:12,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:54:12,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:54:12,675 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:54:12,675 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:54:12,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1157029678] [2022-11-02 19:54:12,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1157029678] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:12,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:12,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 19:54:12,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229860815] [2022-11-02 19:54:12,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:12,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:54:12,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:54:12,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:54:12,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:54:12,677 INFO L87 Difference]: Start difference. First operand 286 states and 328 transitions. Second operand has 3 states, 2 states have (on average 22.0) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 19:54:13,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:13,554 INFO L93 Difference]: Finished difference Result 387 states and 442 transitions. [2022-11-02 19:54:13,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:54:13,555 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 22.0) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 50 [2022-11-02 19:54:13,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:13,556 INFO L225 Difference]: With dead ends: 387 [2022-11-02 19:54:13,556 INFO L226 Difference]: Without dead ends: 387 [2022-11-02 19:54:13,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:54:13,557 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 81 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 19:54:13,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 360 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 19:54:13,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2022-11-02 19:54:13,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 285. [2022-11-02 19:54:13,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 203 states have (on average 1.4827586206896552) internal successors, (301), 263 states have internal predecessors, (301), 11 states have call successors, (11), 10 states have call predecessors, (11), 11 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2022-11-02 19:54:13,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 326 transitions. [2022-11-02 19:54:13,564 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 326 transitions. Word has length 50 [2022-11-02 19:54:13,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:13,565 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 326 transitions. [2022-11-02 19:54:13,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 22.0) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 19:54:13,565 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 326 transitions. [2022-11-02 19:54:13,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-02 19:54:13,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:13,566 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:13,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-02 19:54:13,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:54:13,780 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:54:13,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:13,781 INFO L85 PathProgramCache]: Analyzing trace with hash -888034332, now seen corresponding path program 1 times [2022-11-02 19:54:13,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:54:13,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1578474757] [2022-11-02 19:54:13,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:13,781 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:54:13,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:54:13,783 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:54:13,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-02 19:54:14,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:14,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 19:54:14,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:54:14,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:54:14,111 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:54:14,111 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:54:14,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1578474757] [2022-11-02 19:54:14,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1578474757] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:14,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:14,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 19:54:14,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795055424] [2022-11-02 19:54:14,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:14,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:54:14,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:54:14,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:54:14,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:54:14,112 INFO L87 Difference]: Start difference. First operand 285 states and 326 transitions. Second operand has 3 states, 2 states have (on average 22.0) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 19:54:14,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:14,409 INFO L93 Difference]: Finished difference Result 344 states and 395 transitions. [2022-11-02 19:54:14,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:54:14,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 22.0) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 50 [2022-11-02 19:54:14,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:14,411 INFO L225 Difference]: With dead ends: 344 [2022-11-02 19:54:14,411 INFO L226 Difference]: Without dead ends: 344 [2022-11-02 19:54:14,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:54:14,412 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 43 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:54:14,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 325 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 19:54:14,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-11-02 19:54:14,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 284. [2022-11-02 19:54:14,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 203 states have (on average 1.4729064039408868) internal successors, (299), 262 states have internal predecessors, (299), 11 states have call successors, (11), 10 states have call predecessors, (11), 11 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2022-11-02 19:54:14,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 324 transitions. [2022-11-02 19:54:14,418 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 324 transitions. Word has length 50 [2022-11-02 19:54:14,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:14,419 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 324 transitions. [2022-11-02 19:54:14,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 22.0) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 19:54:14,419 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 324 transitions. [2022-11-02 19:54:14,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-02 19:54:14,420 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:14,420 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:14,435 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2022-11-02 19:54:14,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:54:14,635 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ldv_list_delErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:54:14,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:14,635 INFO L85 PathProgramCache]: Analyzing trace with hash -2119273512, now seen corresponding path program 1 times [2022-11-02 19:54:14,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:54:14,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [192358960] [2022-11-02 19:54:14,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:14,636 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:54:14,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:54:14,637 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:54:14,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-02 19:54:14,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:14,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 19:54:14,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:54:14,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:54:14,934 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:54:14,935 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:54:14,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [192358960] [2022-11-02 19:54:14,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [192358960] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:14,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:14,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:54:14,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707219873] [2022-11-02 19:54:14,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:14,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:54:14,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:54:14,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:54:14,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:54:14,937 INFO L87 Difference]: Start difference. First operand 284 states and 324 transitions. Second operand has 5 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 19:54:15,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:15,462 INFO L93 Difference]: Finished difference Result 304 states and 342 transitions. [2022-11-02 19:54:15,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 19:54:15,466 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 52 [2022-11-02 19:54:15,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:15,467 INFO L225 Difference]: With dead ends: 304 [2022-11-02 19:54:15,467 INFO L226 Difference]: Without dead ends: 304 [2022-11-02 19:54:15,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 19:54:15,467 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 44 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 19:54:15,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 512 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 19:54:15,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-11-02 19:54:15,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 296. [2022-11-02 19:54:15,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 214 states have (on average 1.47196261682243) internal successors, (315), 272 states have internal predecessors, (315), 12 states have call successors, (12), 11 states have call predecessors, (12), 12 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2022-11-02 19:54:15,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 342 transitions. [2022-11-02 19:54:15,474 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 342 transitions. Word has length 52 [2022-11-02 19:54:15,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:15,475 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 342 transitions. [2022-11-02 19:54:15,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 19:54:15,475 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 342 transitions. [2022-11-02 19:54:15,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-02 19:54:15,475 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:15,476 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:15,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-02 19:54:15,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:54:15,690 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ldv_list_delErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:54:15,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:15,690 INFO L85 PathProgramCache]: Analyzing trace with hash -2119273511, now seen corresponding path program 1 times [2022-11-02 19:54:15,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:54:15,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [233784860] [2022-11-02 19:54:15,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:15,690 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:54:15,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:54:15,691 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:54:15,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-02 19:54:16,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:16,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 79 conjunts are in the unsatisfiable core [2022-11-02 19:54:16,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:54:16,248 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-02 19:54:16,248 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-02 19:54:16,557 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 19:54:16,565 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 19:54:16,662 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 19:54:16,672 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 19:54:17,005 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-02 19:54:17,013 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-02 19:54:17,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:54:17,195 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-02 19:54:17,196 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 43 [2022-11-02 19:54:17,367 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-02 19:54:17,895 INFO L356 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-02 19:54:17,896 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2022-11-02 19:54:18,493 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-02 19:54:18,493 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 54 [2022-11-02 19:54:18,516 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2022-11-02 19:54:19,312 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-02 19:54:19,312 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 54 [2022-11-02 19:54:19,324 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2022-11-02 19:54:20,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:54:20,663 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 19:54:20,673 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-02 19:54:20,673 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 34 [2022-11-02 19:54:20,685 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-02 19:54:20,685 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 16 [2022-11-02 19:54:21,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:54:21,070 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:54:21,070 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:54:21,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [233784860] [2022-11-02 19:54:21,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [233784860] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:21,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:21,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-02 19:54:21,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146408621] [2022-11-02 19:54:21,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:21,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-02 19:54:21,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:54:21,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-02 19:54:21,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2022-11-02 19:54:21,072 INFO L87 Difference]: Start difference. First operand 296 states and 342 transitions. Second operand has 27 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 20 states have internal predecessors, (44), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 19:54:22,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:22,464 INFO L93 Difference]: Finished difference Result 285 states and 324 transitions. [2022-11-02 19:54:22,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-02 19:54:22,464 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 20 states have internal predecessors, (44), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 52 [2022-11-02 19:54:22,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:22,465 INFO L225 Difference]: With dead ends: 285 [2022-11-02 19:54:22,465 INFO L226 Difference]: Without dead ends: 285 [2022-11-02 19:54:22,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 21 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=124, Invalid=932, Unknown=0, NotChecked=0, Total=1056 [2022-11-02 19:54:22,465 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 15 mSDsluCounter, 1470 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 272 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 19:54:22,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1636 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 291 Invalid, 0 Unknown, 272 Unchecked, 0.6s Time] [2022-11-02 19:54:22,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-11-02 19:54:22,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2022-11-02 19:54:22,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 205 states have (on average 1.4585365853658536) internal successors, (299), 263 states have internal predecessors, (299), 11 states have call successors, (11), 10 states have call predecessors, (11), 11 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2022-11-02 19:54:22,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 324 transitions. [2022-11-02 19:54:22,471 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 324 transitions. Word has length 52 [2022-11-02 19:54:22,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:22,471 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 324 transitions. [2022-11-02 19:54:22,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 20 states have internal predecessors, (44), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 19:54:22,472 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 324 transitions. [2022-11-02 19:54:22,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-02 19:54:22,472 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:22,472 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:22,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-02 19:54:22,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:54:22,687 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:54:22,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:22,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1760156012, now seen corresponding path program 1 times [2022-11-02 19:54:22,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:54:22,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1698605552] [2022-11-02 19:54:22,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:22,688 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:54:22,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:54:22,689 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:54:22,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-02 19:54:22,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:22,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 19:54:22,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:54:23,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:54:23,011 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:54:23,011 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:54:23,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1698605552] [2022-11-02 19:54:23,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1698605552] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:23,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:23,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 19:54:23,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22776013] [2022-11-02 19:54:23,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:23,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:54:23,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:54:23,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:54:23,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:54:23,013 INFO L87 Difference]: Start difference. First operand 285 states and 324 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 19:54:23,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:23,067 INFO L93 Difference]: Finished difference Result 362 states and 405 transitions. [2022-11-02 19:54:23,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 19:54:23,067 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 51 [2022-11-02 19:54:23,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:23,069 INFO L225 Difference]: With dead ends: 362 [2022-11-02 19:54:23,069 INFO L226 Difference]: Without dead ends: 362 [2022-11-02 19:54:23,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:54:23,070 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 95 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:54:23,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 826 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:54:23,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-11-02 19:54:23,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 291. [2022-11-02 19:54:23,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 211 states have (on average 1.4454976303317535) internal successors, (305), 269 states have internal predecessors, (305), 11 states have call successors, (11), 10 states have call predecessors, (11), 11 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2022-11-02 19:54:23,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 330 transitions. [2022-11-02 19:54:23,076 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 330 transitions. Word has length 51 [2022-11-02 19:54:23,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:23,077 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 330 transitions. [2022-11-02 19:54:23,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 19:54:23,077 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 330 transitions. [2022-11-02 19:54:23,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-02 19:54:23,078 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:23,078 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:23,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (37)] Ended with exit code 0 [2022-11-02 19:54:23,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:54:23,292 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr41REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:54:23,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:23,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1281723238, now seen corresponding path program 1 times [2022-11-02 19:54:23,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:54:23,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [219239965] [2022-11-02 19:54:23,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:23,293 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:54:23,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:54:23,294 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:54:23,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-02 19:54:23,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:23,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 19:54:23,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:54:23,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:54:23,587 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:54:23,587 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:54:23,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [219239965] [2022-11-02 19:54:23,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [219239965] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:23,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:23,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 19:54:23,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035174104] [2022-11-02 19:54:23,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:23,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:54:23,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:54:23,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:54:23,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:54:23,589 INFO L87 Difference]: Start difference. First operand 291 states and 330 transitions. Second operand has 4 states, 3 states have (on average 15.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 19:54:23,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:23,986 INFO L93 Difference]: Finished difference Result 296 states and 332 transitions. [2022-11-02 19:54:23,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 19:54:23,987 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 15.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 53 [2022-11-02 19:54:23,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:23,988 INFO L225 Difference]: With dead ends: 296 [2022-11-02 19:54:23,988 INFO L226 Difference]: Without dead ends: 296 [2022-11-02 19:54:23,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:54:23,989 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 50 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 19:54:23,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 347 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 19:54:23,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-11-02 19:54:23,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 293. [2022-11-02 19:54:23,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 213 states have (on average 1.4413145539906103) internal successors, (307), 270 states have internal predecessors, (307), 11 states have call successors, (11), 10 states have call predecessors, (11), 11 states have return successors, (14), 12 states have call predecessors, (14), 11 states have call successors, (14) [2022-11-02 19:54:23,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 332 transitions. [2022-11-02 19:54:23,995 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 332 transitions. Word has length 53 [2022-11-02 19:54:23,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:23,995 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 332 transitions. [2022-11-02 19:54:23,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 15.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 19:54:23,996 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 332 transitions. [2022-11-02 19:54:23,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-02 19:54:23,996 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:23,996 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:24,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-11-02 19:54:24,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:54:24,209 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:54:24,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:24,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1078714490, now seen corresponding path program 1 times [2022-11-02 19:54:24,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:54:24,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1310869472] [2022-11-02 19:54:24,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:24,210 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:54:24,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:54:24,212 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:54:24,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-02 19:54:24,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:24,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-02 19:54:24,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:54:24,700 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 19:54:24,943 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-02 19:54:24,943 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-11-02 19:54:25,026 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-02 19:54:25,027 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 49 [2022-11-02 19:54:25,193 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-02 19:54:25,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:54:25,212 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:54:25,212 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:54:25,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1310869472] [2022-11-02 19:54:25,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1310869472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:25,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:25,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-02 19:54:25,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592088325] [2022-11-02 19:54:25,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:25,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 19:54:25,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:54:25,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 19:54:25,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:54:25,214 INFO L87 Difference]: Start difference. First operand 293 states and 332 transitions. Second operand has 18 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-02 19:54:27,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:27,168 INFO L93 Difference]: Finished difference Result 302 states and 340 transitions. [2022-11-02 19:54:27,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 19:54:27,169 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 4 states have call successors, (4), 3 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 54 [2022-11-02 19:54:27,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:27,170 INFO L225 Difference]: With dead ends: 302 [2022-11-02 19:54:27,170 INFO L226 Difference]: Without dead ends: 302 [2022-11-02 19:54:27,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=203, Invalid=853, Unknown=0, NotChecked=0, Total=1056 [2022-11-02 19:54:27,171 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 363 mSDsluCounter, 1402 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 1557 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:54:27,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 1557 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-02 19:54:27,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2022-11-02 19:54:27,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 293. [2022-11-02 19:54:27,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 214 states have (on average 1.4345794392523366) internal successors, (307), 270 states have internal predecessors, (307), 11 states have call successors, (11), 10 states have call predecessors, (11), 11 states have return successors, (14), 12 states have call predecessors, (14), 11 states have call successors, (14) [2022-11-02 19:54:27,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 332 transitions. [2022-11-02 19:54:27,176 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 332 transitions. Word has length 54 [2022-11-02 19:54:27,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:27,177 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 332 transitions. [2022-11-02 19:54:27,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-02 19:54:27,177 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 332 transitions. [2022-11-02 19:54:27,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-02 19:54:27,178 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:27,178 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:27,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-11-02 19:54:27,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:54:27,392 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:54:27,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:27,392 INFO L85 PathProgramCache]: Analyzing trace with hash 919589466, now seen corresponding path program 1 times [2022-11-02 19:54:27,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:54:27,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [914989607] [2022-11-02 19:54:27,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:27,393 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:54:27,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:54:27,394 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:54:27,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-02 19:54:27,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:27,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-02 19:54:27,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:54:27,894 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-02 19:54:27,894 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-02 19:54:28,232 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 19:54:28,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:54:28,327 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-02 19:54:28,328 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 36 [2022-11-02 19:54:28,436 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2022-11-02 19:54:28,755 INFO L356 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-02 19:54:28,755 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2022-11-02 19:54:29,057 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 22 [2022-11-02 19:54:29,338 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 53 [2022-11-02 19:54:30,038 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-02 19:54:30,038 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 18 [2022-11-02 19:54:30,498 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-02 19:54:30,498 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 21 [2022-11-02 19:54:30,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:54:30,629 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:54:30,629 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:54:30,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [914989607] [2022-11-02 19:54:30,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [914989607] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:30,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:30,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 19:54:30,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600560278] [2022-11-02 19:54:30,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:30,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-02 19:54:30,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:54:30,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-02 19:54:30,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-11-02 19:54:30,631 INFO L87 Difference]: Start difference. First operand 293 states and 332 transitions. Second operand has 21 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-02 19:54:34,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:34,157 INFO L93 Difference]: Finished difference Result 328 states and 363 transitions. [2022-11-02 19:54:34,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 19:54:34,166 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 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) Word has length 55 [2022-11-02 19:54:34,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:34,167 INFO L225 Difference]: With dead ends: 328 [2022-11-02 19:54:34,168 INFO L226 Difference]: Without dead ends: 328 [2022-11-02 19:54:34,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=141, Invalid=981, Unknown=0, NotChecked=0, Total=1122 [2022-11-02 19:54:34,169 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 302 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 1642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 642 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:54:34,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 1423 Invalid, 1642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 959 Invalid, 0 Unknown, 642 Unchecked, 2.2s Time] [2022-11-02 19:54:34,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-11-02 19:54:34,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 294. [2022-11-02 19:54:34,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 215 states have (on average 1.4325581395348836) internal successors, (308), 271 states have internal predecessors, (308), 11 states have call successors, (11), 10 states have call predecessors, (11), 11 states have return successors, (14), 12 states have call predecessors, (14), 11 states have call successors, (14) [2022-11-02 19:54:34,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 333 transitions. [2022-11-02 19:54:34,178 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 333 transitions. Word has length 55 [2022-11-02 19:54:34,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:34,178 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 333 transitions. [2022-11-02 19:54:34,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-02 19:54:34,179 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 333 transitions. [2022-11-02 19:54:34,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-02 19:54:34,179 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:34,179 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:34,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-11-02 19:54:34,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:54:34,393 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:54:34,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:34,394 INFO L85 PathProgramCache]: Analyzing trace with hash -776401890, now seen corresponding path program 1 times [2022-11-02 19:54:34,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:54:34,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [854425314] [2022-11-02 19:54:34,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:34,394 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:54:34,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:54:34,395 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:54:34,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-02 19:54:34,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:34,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-02 19:54:34,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:54:34,937 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-02 19:54:34,938 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-02 19:54:35,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:54:35,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:54:35,157 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 32 [2022-11-02 19:54:35,253 INFO L356 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-02 19:54:35,253 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 32 [2022-11-02 19:54:35,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:54:35,508 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:54:35,508 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:54:35,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [854425314] [2022-11-02 19:54:35,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [854425314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:35,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:35,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 19:54:35,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721341646] [2022-11-02 19:54:35,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:35,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 19:54:35,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:54:35,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 19:54:35,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-02 19:54:35,510 INFO L87 Difference]: Start difference. First operand 294 states and 333 transitions. Second operand has 13 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 19:54:36,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:36,610 INFO L93 Difference]: Finished difference Result 304 states and 340 transitions. [2022-11-02 19:54:36,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 19:54:36,610 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 55 [2022-11-02 19:54:36,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:36,611 INFO L225 Difference]: With dead ends: 304 [2022-11-02 19:54:36,611 INFO L226 Difference]: Without dead ends: 304 [2022-11-02 19:54:36,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2022-11-02 19:54:36,612 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 96 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 219 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:54:36,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 872 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 606 Invalid, 0 Unknown, 219 Unchecked, 1.0s Time] [2022-11-02 19:54:36,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-11-02 19:54:36,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 293. [2022-11-02 19:54:36,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 215 states have (on average 1.4232558139534883) internal successors, (306), 270 states have internal predecessors, (306), 11 states have call successors, (11), 10 states have call predecessors, (11), 11 states have return successors, (14), 12 states have call predecessors, (14), 11 states have call successors, (14) [2022-11-02 19:54:36,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 331 transitions. [2022-11-02 19:54:36,618 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 331 transitions. Word has length 55 [2022-11-02 19:54:36,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:36,618 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 331 transitions. [2022-11-02 19:54:36,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 19:54:36,618 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 331 transitions. [2022-11-02 19:54:36,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-02 19:54:36,619 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:36,619 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:36,632 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (41)] Ended with exit code 0 [2022-11-02 19:54:36,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:54:36,826 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:54:36,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:36,827 INFO L85 PathProgramCache]: Analyzing trace with hash -776401889, now seen corresponding path program 1 times [2022-11-02 19:54:36,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:54:36,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1679401299] [2022-11-02 19:54:36,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:36,827 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:54:36,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:54:36,828 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:54:36,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-02 19:54:37,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:37,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-02 19:54:37,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:54:37,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:54:37,357 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-02 19:54:37,379 INFO L356 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-02 19:54:37,379 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-02 19:54:37,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:54:37,631 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-02 19:54:37,758 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 19:54:37,758 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-02 19:54:38,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:54:38,039 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:54:38,040 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:54:38,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1679401299] [2022-11-02 19:54:38,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1679401299] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:38,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:38,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 19:54:38,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266657660] [2022-11-02 19:54:38,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:38,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 19:54:38,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:54:38,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 19:54:38,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-02 19:54:38,041 INFO L87 Difference]: Start difference. First operand 293 states and 331 transitions. Second operand has 13 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 19:54:39,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:39,530 INFO L93 Difference]: Finished difference Result 294 states and 329 transitions. [2022-11-02 19:54:39,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 19:54:39,531 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 55 [2022-11-02 19:54:39,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:39,532 INFO L225 Difference]: With dead ends: 294 [2022-11-02 19:54:39,532 INFO L226 Difference]: Without dead ends: 294 [2022-11-02 19:54:39,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-11-02 19:54:39,533 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 138 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 378 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:54:39,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 824 Invalid, 1096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 705 Invalid, 0 Unknown, 378 Unchecked, 1.3s Time] [2022-11-02 19:54:39,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-11-02 19:54:39,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 292. [2022-11-02 19:54:39,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 215 states have (on average 1.413953488372093) internal successors, (304), 269 states have internal predecessors, (304), 11 states have call successors, (11), 10 states have call predecessors, (11), 11 states have return successors, (14), 12 states have call predecessors, (14), 11 states have call successors, (14) [2022-11-02 19:54:39,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 329 transitions. [2022-11-02 19:54:39,539 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 329 transitions. Word has length 55 [2022-11-02 19:54:39,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:39,539 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 329 transitions. [2022-11-02 19:54:39,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 19:54:39,540 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 329 transitions. [2022-11-02 19:54:39,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-02 19:54:39,540 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:39,540 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:39,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (42)] Ended with exit code 0 [2022-11-02 19:54:39,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:54:39,756 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:54:39,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:39,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1557497336, now seen corresponding path program 1 times [2022-11-02 19:54:39,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:54:39,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1553386965] [2022-11-02 19:54:39,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:39,757 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:54:39,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:54:39,758 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:54:39,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-02 19:54:40,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:40,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 19:54:40,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:54:40,127 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-02 19:54:40,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:54:40,143 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:54:40,144 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:54:40,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1553386965] [2022-11-02 19:54:40,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1553386965] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:40,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:40,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:54:40,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886981762] [2022-11-02 19:54:40,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:40,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:54:40,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:54:40,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:54:40,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:54:40,145 INFO L87 Difference]: Start difference. First operand 292 states and 329 transitions. Second operand has 8 states, 6 states have (on average 8.0) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 19:54:40,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:40,944 INFO L93 Difference]: Finished difference Result 298 states and 334 transitions. [2022-11-02 19:54:40,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 19:54:40,945 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 8.0) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 56 [2022-11-02 19:54:40,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:40,947 INFO L225 Difference]: With dead ends: 298 [2022-11-02 19:54:40,947 INFO L226 Difference]: Without dead ends: 298 [2022-11-02 19:54:40,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-02 19:54:40,947 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 42 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 19:54:40,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 762 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 19:54:40,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-11-02 19:54:40,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 295. [2022-11-02 19:54:40,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 218 states have (on average 1.4174311926605505) internal successors, (309), 272 states have internal predecessors, (309), 11 states have call successors, (11), 10 states have call predecessors, (11), 11 states have return successors, (14), 12 states have call predecessors, (14), 11 states have call successors, (14) [2022-11-02 19:54:40,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 334 transitions. [2022-11-02 19:54:40,959 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 334 transitions. Word has length 56 [2022-11-02 19:54:40,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:40,959 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 334 transitions. [2022-11-02 19:54:40,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 8.0) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 19:54:40,960 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 334 transitions. [2022-11-02 19:54:40,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-02 19:54:40,960 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:40,961 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:40,970 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (43)] Ended with exit code 0 [2022-11-02 19:54:41,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:54:41,161 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:54:41,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:41,162 INFO L85 PathProgramCache]: Analyzing trace with hash 201724655, now seen corresponding path program 1 times [2022-11-02 19:54:41,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:54:41,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1592104768] [2022-11-02 19:54:41,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:41,162 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:54:41,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:54:41,163 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:54:41,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-02 19:54:41,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:41,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 19:54:41,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:54:42,028 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 19:54:42,028 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:54:42,029 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:54:42,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1592104768] [2022-11-02 19:54:42,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1592104768] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:42,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:42,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 19:54:42,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096000466] [2022-11-02 19:54:42,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:42,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:54:42,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:54:42,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:54:42,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:54:42,032 INFO L87 Difference]: Start difference. First operand 295 states and 334 transitions. Second operand has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 19:54:42,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:42,058 INFO L93 Difference]: Finished difference Result 350 states and 387 transitions. [2022-11-02 19:54:42,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 19:54:42,059 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 56 [2022-11-02 19:54:42,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:42,060 INFO L225 Difference]: With dead ends: 350 [2022-11-02 19:54:42,060 INFO L226 Difference]: Without dead ends: 350 [2022-11-02 19:54:42,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:54:42,061 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 138 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 123 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:54:42,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 693 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 123 Unchecked, 0.0s Time] [2022-11-02 19:54:42,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-11-02 19:54:42,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 295. [2022-11-02 19:54:42,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 218 states have (on average 1.4128440366972477) internal successors, (308), 272 states have internal predecessors, (308), 11 states have call successors, (11), 10 states have call predecessors, (11), 11 states have return successors, (14), 12 states have call predecessors, (14), 11 states have call successors, (14) [2022-11-02 19:54:42,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 333 transitions. [2022-11-02 19:54:42,067 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 333 transitions. Word has length 56 [2022-11-02 19:54:42,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:42,068 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 333 transitions. [2022-11-02 19:54:42,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 19:54:42,068 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 333 transitions. [2022-11-02 19:54:42,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-02 19:54:42,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:42,069 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:42,083 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (44)] Ended with exit code 0 [2022-11-02 19:54:42,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:54:42,283 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:54:42,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:42,284 INFO L85 PathProgramCache]: Analyzing trace with hash 477520901, now seen corresponding path program 1 times [2022-11-02 19:54:42,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:54:42,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1439882749] [2022-11-02 19:54:42,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:42,284 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:54:42,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:54:42,285 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:54:42,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-02 19:54:42,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:42,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 19:54:42,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:54:42,714 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-02 19:54:42,779 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-02 19:54:42,779 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-02 19:54:42,792 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:54:42,793 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:54:42,793 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:54:42,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1439882749] [2022-11-02 19:54:42,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1439882749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:42,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:42,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:54:42,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251696559] [2022-11-02 19:54:42,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:42,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:54:42,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:54:42,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:54:42,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:54:42,795 INFO L87 Difference]: Start difference. First operand 295 states and 333 transitions. Second operand has 5 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 19:54:43,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:43,267 INFO L93 Difference]: Finished difference Result 356 states and 394 transitions. [2022-11-02 19:54:43,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 19:54:43,268 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 57 [2022-11-02 19:54:43,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:43,270 INFO L225 Difference]: With dead ends: 356 [2022-11-02 19:54:43,270 INFO L226 Difference]: Without dead ends: 356 [2022-11-02 19:54:43,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:54:43,270 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 100 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 106 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 19:54:43,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 451 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 186 Invalid, 0 Unknown, 106 Unchecked, 0.5s Time] [2022-11-02 19:54:43,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-02 19:54:43,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 294. [2022-11-02 19:54:43,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 218 states have (on average 1.408256880733945) internal successors, (307), 271 states have internal predecessors, (307), 11 states have call successors, (11), 10 states have call predecessors, (11), 11 states have return successors, (14), 12 states have call predecessors, (14), 11 states have call successors, (14) [2022-11-02 19:54:43,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 332 transitions. [2022-11-02 19:54:43,274 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 332 transitions. Word has length 57 [2022-11-02 19:54:43,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:43,274 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 332 transitions. [2022-11-02 19:54:43,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 19:54:43,275 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 332 transitions. [2022-11-02 19:54:43,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-02 19:54:43,275 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:43,275 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:43,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2022-11-02 19:54:43,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:54:43,476 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:54:43,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:43,476 INFO L85 PathProgramCache]: Analyzing trace with hash 477520902, now seen corresponding path program 1 times [2022-11-02 19:54:43,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:54:43,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1696111143] [2022-11-02 19:54:43,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:43,477 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:54:43,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:54:43,478 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:54:43,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-11-02 19:54:43,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:43,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 19:54:43,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:54:44,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:54:44,158 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-11-02 19:54:44,190 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-02 19:54:44,190 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-02 19:54:44,316 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:54:44,316 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:54:44,317 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:54:44,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1696111143] [2022-11-02 19:54:44,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1696111143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:44,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:44,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 19:54:44,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379396719] [2022-11-02 19:54:44,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:44,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 19:54:44,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:54:44,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 19:54:44,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 19:54:44,318 INFO L87 Difference]: Start difference. First operand 294 states and 332 transitions. Second operand has 6 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 19:54:46,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:46,741 INFO L93 Difference]: Finished difference Result 412 states and 455 transitions. [2022-11-02 19:54:46,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 19:54:46,742 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 57 [2022-11-02 19:54:46,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:46,743 INFO L225 Difference]: With dead ends: 412 [2022-11-02 19:54:46,743 INFO L226 Difference]: Without dead ends: 412 [2022-11-02 19:54:46,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 19:54:46,743 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 165 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 143 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-02 19:54:46,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 521 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 385 Invalid, 0 Unknown, 143 Unchecked, 2.4s Time] [2022-11-02 19:54:46,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2022-11-02 19:54:46,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 293. [2022-11-02 19:54:46,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 218 states have (on average 1.4036697247706422) internal successors, (306), 270 states have internal predecessors, (306), 11 states have call successors, (11), 10 states have call predecessors, (11), 11 states have return successors, (14), 12 states have call predecessors, (14), 11 states have call successors, (14) [2022-11-02 19:54:46,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 331 transitions. [2022-11-02 19:54:46,757 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 331 transitions. Word has length 57 [2022-11-02 19:54:46,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:46,757 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 331 transitions. [2022-11-02 19:54:46,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 19:54:46,758 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 331 transitions. [2022-11-02 19:54:46,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-02 19:54:46,758 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:46,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:46,778 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (46)] Ended with exit code 0 [2022-11-02 19:54:46,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:54:46,975 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:54:46,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:46,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1389571934, now seen corresponding path program 1 times [2022-11-02 19:54:46,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:54:46,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [427909394] [2022-11-02 19:54:46,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:46,976 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:54:46,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:54:46,977 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:54:46,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-11-02 19:54:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:47,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-02 19:54:47,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:54:47,576 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-02 19:54:47,576 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-02 19:54:47,874 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 19:54:47,977 INFO L356 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2022-11-02 19:54:47,978 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 51 [2022-11-02 19:54:48,110 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-02 19:54:48,415 INFO L356 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-02 19:54:48,416 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 36 [2022-11-02 19:54:48,790 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-02 19:54:48,790 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 41 [2022-11-02 19:54:48,803 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2022-11-02 19:54:49,267 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-02 19:54:49,267 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 71 [2022-11-02 19:54:49,387 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2022-11-02 19:54:50,078 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 19:54:50,078 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 67 [2022-11-02 19:54:50,373 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 19:54:50,373 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 67 [2022-11-02 19:54:50,711 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 19:54:50,711 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 67 [2022-11-02 19:54:51,049 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 19:54:51,049 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 67 [2022-11-02 19:54:52,571 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:54:52,572 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 67 [2022-11-02 19:54:53,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:54:53,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:54:53,173 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:54:53,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [427909394] [2022-11-02 19:54:53,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [427909394] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:53,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:53,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-02 19:54:53,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839257808] [2022-11-02 19:54:53,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:53,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-02 19:54:53,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:54:53,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-02 19:54:53,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=588, Unknown=0, NotChecked=0, Total=650 [2022-11-02 19:54:53,174 INFO L87 Difference]: Start difference. First operand 293 states and 331 transitions. Second operand has 26 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 21 states have internal predecessors, (51), 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) [2022-11-02 19:54:54,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:54,504 INFO L93 Difference]: Finished difference Result 331 states and 376 transitions. [2022-11-02 19:54:54,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-02 19:54:54,505 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 21 states have internal predecessors, (51), 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 58 [2022-11-02 19:54:54,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:54,506 INFO L225 Difference]: With dead ends: 331 [2022-11-02 19:54:54,506 INFO L226 Difference]: Without dead ends: 331 [2022-11-02 19:54:54,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 29 SyntacticMatches, 5 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=108, Invalid=1014, Unknown=0, NotChecked=0, Total=1122 [2022-11-02 19:54:54,506 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 78 mSDsluCounter, 1804 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 1956 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1193 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 19:54:54,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 1956 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 380 Invalid, 0 Unknown, 1193 Unchecked, 0.6s Time] [2022-11-02 19:54:54,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2022-11-02 19:54:54,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 309. [2022-11-02 19:54:54,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 232 states have (on average 1.4051724137931034) internal successors, (326), 285 states have internal predecessors, (326), 12 states have call successors, (12), 11 states have call predecessors, (12), 12 states have return successors, (16), 12 states have call predecessors, (16), 12 states have call successors, (16) [2022-11-02 19:54:54,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 354 transitions. [2022-11-02 19:54:54,518 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 354 transitions. Word has length 58 [2022-11-02 19:54:54,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:54,518 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 354 transitions. [2022-11-02 19:54:54,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 21 states have internal predecessors, (51), 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) [2022-11-02 19:54:54,518 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 354 transitions. [2022-11-02 19:54:54,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-02 19:54:54,519 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:54,519 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:54,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2022-11-02 19:54:54,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:54:54,736 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:54:54,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:54,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1389571933, now seen corresponding path program 1 times [2022-11-02 19:54:54,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:54:54,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2115280078] [2022-11-02 19:54:54,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:54,737 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:54:54,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:54:54,738 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:54:54,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-11-02 19:54:55,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:55,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 93 conjunts are in the unsatisfiable core [2022-11-02 19:54:55,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:54:55,757 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-02 19:54:55,758 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-02 19:54:55,940 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 19:54:56,017 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-02 19:54:56,017 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-02 19:54:56,256 INFO L356 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2022-11-02 19:54:56,256 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-11-02 19:54:56,504 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 19:54:56,540 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-02 19:54:57,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:54:57,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:54:57,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:54:57,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:54:57,047 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 57 [2022-11-02 19:54:57,064 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 37 [2022-11-02 19:54:57,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:54:57,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:54:57,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:54:57,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:54:57,105 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 12 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-02 19:54:57,667 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 19:54:57,696 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-02 19:54:57,738 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-02 19:54:57,738 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2022-11-02 19:54:57,750 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-02 19:54:57,968 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-02 19:54:57,968 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2022-11-02 19:54:57,980 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-02 19:54:57,989 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-02 19:54:58,012 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 19:54:58,248 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 19:54:58,272 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-02 19:54:58,273 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2022-11-02 19:54:58,281 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-02 19:54:58,301 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-02 19:54:58,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:54:58,534 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-02 19:54:58,545 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 19:54:58,553 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-02 19:54:59,197 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 22 [2022-11-02 19:55:00,173 INFO L356 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-11-02 19:55:00,174 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 37 [2022-11-02 19:55:00,178 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 54 treesize of output 29 [2022-11-02 19:55:00,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:55:00,499 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:55:00,500 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:55:00,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2115280078] [2022-11-02 19:55:00,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2115280078] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:55:00,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:55:00,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-11-02 19:55:00,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048028979] [2022-11-02 19:55:00,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:55:00,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-02 19:55:00,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:55:00,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-02 19:55:00,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=917, Unknown=0, NotChecked=0, Total=992 [2022-11-02 19:55:00,501 INFO L87 Difference]: Start difference. First operand 309 states and 354 transitions. Second operand has 32 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 27 states have internal predecessors, (51), 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) [2022-11-02 19:55:02,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:55:02,930 INFO L93 Difference]: Finished difference Result 378 states and 430 transitions. [2022-11-02 19:55:02,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-02 19:55:02,931 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 27 states have internal predecessors, (51), 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 58 [2022-11-02 19:55:02,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:55:02,933 INFO L225 Difference]: With dead ends: 378 [2022-11-02 19:55:02,933 INFO L226 Difference]: Without dead ends: 378 [2022-11-02 19:55:02,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=124, Invalid=1598, Unknown=0, NotChecked=0, Total=1722 [2022-11-02 19:55:02,934 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 127 mSDsluCounter, 2851 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 2997 SdHoareTripleChecker+Invalid, 2220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1369 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-02 19:55:02,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 2997 Invalid, 2220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 834 Invalid, 0 Unknown, 1369 Unchecked, 1.5s Time] [2022-11-02 19:55:02,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-11-02 19:55:02,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 358. [2022-11-02 19:55:02,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 277 states have (on average 1.3935018050541517) internal successors, (386), 331 states have internal predecessors, (386), 15 states have call successors, (15), 12 states have call predecessors, (15), 13 states have return successors, (19), 14 states have call predecessors, (19), 15 states have call successors, (19) [2022-11-02 19:55:02,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 420 transitions. [2022-11-02 19:55:02,941 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 420 transitions. Word has length 58 [2022-11-02 19:55:02,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:55:02,942 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 420 transitions. [2022-11-02 19:55:02,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 27 states have internal predecessors, (51), 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) [2022-11-02 19:55:02,942 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 420 transitions. [2022-11-02 19:55:02,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-02 19:55:02,943 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:55:02,943 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:55:02,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2022-11-02 19:55:03,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:55:03,160 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:55:03,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:55:03,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1664331547, now seen corresponding path program 1 times [2022-11-02 19:55:03,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:55:03,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [622328960] [2022-11-02 19:55:03,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:55:03,161 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:55:03,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:55:03,162 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:55:03,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-11-02 19:55:03,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:03,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 80 conjunts are in the unsatisfiable core [2022-11-02 19:55:03,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:55:04,120 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-02 19:55:04,120 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-02 19:55:04,361 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 19:55:04,470 INFO L356 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-02 19:55:04,471 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 32 [2022-11-02 19:55:04,716 INFO L356 Elim1Store]: treesize reduction 38, result has 25.5 percent of original size [2022-11-02 19:55:04,716 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 27 treesize of output 31 [2022-11-02 19:55:04,993 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 19:55:05,019 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-02 19:55:05,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:55:05,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:55:05,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:55:05,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:55:05,337 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 13 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-02 19:55:05,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:55:05,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:55:05,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:55:05,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:55:05,359 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 57 [2022-11-02 19:55:05,675 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 19:55:05,701 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-02 19:55:05,701 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2022-11-02 19:55:05,710 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-02 19:55:05,822 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 19:55:05,847 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-02 19:55:05,848 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2022-11-02 19:55:05,856 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-02 19:55:06,049 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-02 19:55:06,050 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2022-11-02 19:55:06,058 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-02 19:55:06,093 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 19:55:06,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:55:06,283 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-02 19:55:06,292 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 19:55:07,887 INFO L356 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-11-02 19:55:07,887 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 53 treesize of output 31 [2022-11-02 19:55:07,892 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 23 [2022-11-02 19:55:08,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:55:08,287 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:55:08,288 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:55:08,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [622328960] [2022-11-02 19:55:08,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [622328960] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:55:08,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:55:08,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-11-02 19:55:08,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614860897] [2022-11-02 19:55:08,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:55:08,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-02 19:55:08,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:55:08,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-02 19:55:08,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=746, Unknown=0, NotChecked=0, Total=812 [2022-11-02 19:55:08,289 INFO L87 Difference]: Start difference. First operand 358 states and 420 transitions. Second operand has 29 states, 25 states have (on average 2.04) internal successors, (51), 24 states have internal predecessors, (51), 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) [2022-11-02 19:55:09,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:55:09,285 INFO L93 Difference]: Finished difference Result 372 states and 431 transitions. [2022-11-02 19:55:09,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-02 19:55:09,285 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 2.04) internal successors, (51), 24 states have internal predecessors, (51), 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 58 [2022-11-02 19:55:09,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:55:09,286 INFO L225 Difference]: With dead ends: 372 [2022-11-02 19:55:09,287 INFO L226 Difference]: Without dead ends: 372 [2022-11-02 19:55:09,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=86, Invalid=1036, Unknown=0, NotChecked=0, Total=1122 [2022-11-02 19:55:09,287 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 69 mSDsluCounter, 2835 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 2982 SdHoareTripleChecker+Invalid, 1621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1244 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 19:55:09,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 2982 Invalid, 1621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 371 Invalid, 0 Unknown, 1244 Unchecked, 0.7s Time] [2022-11-02 19:55:09,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2022-11-02 19:55:09,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 358. [2022-11-02 19:55:09,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 277 states have (on average 1.3898916967509025) internal successors, (385), 331 states have internal predecessors, (385), 15 states have call successors, (15), 12 states have call predecessors, (15), 13 states have return successors, (19), 14 states have call predecessors, (19), 15 states have call successors, (19) [2022-11-02 19:55:09,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 419 transitions. [2022-11-02 19:55:09,294 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 419 transitions. Word has length 58 [2022-11-02 19:55:09,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:55:09,294 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 419 transitions. [2022-11-02 19:55:09,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 2.04) internal successors, (51), 24 states have internal predecessors, (51), 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) [2022-11-02 19:55:09,294 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 419 transitions. [2022-11-02 19:55:09,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-02 19:55:09,295 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:55:09,295 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:55:09,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2022-11-02 19:55:09,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:55:09,514 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:55:09,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:55:09,515 INFO L85 PathProgramCache]: Analyzing trace with hash -663909690, now seen corresponding path program 1 times [2022-11-02 19:55:09,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:55:09,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [909259636] [2022-11-02 19:55:09,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:55:09,515 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:55:09,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:55:09,516 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:55:09,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-11-02 19:55:09,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:09,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 19:55:09,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:55:09,997 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 19:55:09,997 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:55:09,997 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:55:09,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [909259636] [2022-11-02 19:55:09,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [909259636] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:55:09,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:55:09,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 19:55:09,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374287471] [2022-11-02 19:55:09,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:55:09,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:55:09,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:55:09,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:55:09,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:55:09,999 INFO L87 Difference]: Start difference. First operand 358 states and 419 transitions. Second operand has 4 states, 3 states have (on average 16.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-02 19:55:10,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:55:10,587 INFO L93 Difference]: Finished difference Result 483 states and 554 transitions. [2022-11-02 19:55:10,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 19:55:10,592 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 16.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 59 [2022-11-02 19:55:10,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:55:10,594 INFO L225 Difference]: With dead ends: 483 [2022-11-02 19:55:10,594 INFO L226 Difference]: Without dead ends: 483 [2022-11-02 19:55:10,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:55:10,594 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 132 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 19:55:10,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 499 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 19:55:10,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-11-02 19:55:10,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 357. [2022-11-02 19:55:10,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 277 states have (on average 1.3862815884476534) internal successors, (384), 330 states have internal predecessors, (384), 15 states have call successors, (15), 12 states have call predecessors, (15), 13 states have return successors, (19), 14 states have call predecessors, (19), 15 states have call successors, (19) [2022-11-02 19:55:10,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 418 transitions. [2022-11-02 19:55:10,602 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 418 transitions. Word has length 59 [2022-11-02 19:55:10,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:55:10,602 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 418 transitions. [2022-11-02 19:55:10,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 16.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-02 19:55:10,603 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 418 transitions. [2022-11-02 19:55:10,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-02 19:55:10,603 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:55:10,604 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:55:10,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2022-11-02 19:55:10,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:55:10,820 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-02 19:55:10,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:55:10,820 INFO L85 PathProgramCache]: Analyzing trace with hash -663909689, now seen corresponding path program 1 times [2022-11-02 19:55:10,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:55:10,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [351823388] [2022-11-02 19:55:10,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:55:10,821 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:55:10,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:55:10,822 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:55:10,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb8cb63-bb3d-4343-bb7a-f6679ae65959/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-11-02 19:55:11,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:11,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 88 conjunts are in the unsatisfiable core [2022-11-02 19:55:11,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:55:11,791 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-02 19:55:11,791 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-02 19:55:12,020 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 19:55:12,074 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-02 19:55:12,319 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-02 19:55:12,320 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-02 19:55:12,586 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 19:55:12,620 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-02 19:55:12,621 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-11-02 19:55:13,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:55:13,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:55:13,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:55:13,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:55:13,071 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-02 19:55:13,071 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 57 [2022-11-02 19:55:13,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:55:13,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:55:13,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:55:13,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:55:13,087 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-02 19:55:13,115 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 37 [2022-11-02 19:55:13,617 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-02 19:55:13,649 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 19:55:13,681 INFO L356 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-02 19:55:13,682 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 30 [2022-11-02 19:55:13,840 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 19:55:13,848 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-02 19:55:13,884 INFO L356 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-02 19:55:13,885 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 30 [2022-11-02 19:55:14,121 INFO L356 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-02 19:55:14,121 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 30 [2022-11-02 19:55:14,140 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-02 19:55:14,159 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 19:55:14,358 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-02 19:55:14,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:55:14,393 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-02 19:55:14,393 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 26 [2022-11-02 19:55:14,408 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 19:55:14,838 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-02 19:55:14,969 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 22 [2022-11-02 19:55:15,221 INFO L356 Elim1Store]: treesize reduction 26, result has 10.3 percent of original size [2022-11-02 19:55:15,222 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 16 [2022-11-02 19:55:15,630 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:55:15,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:55:16,039 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2022-11-02 19:55:18,269 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_3584 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_3583 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3582 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_fetch_item_~item#1.base| v_ArrVal_3583))) (select (select .cse2 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_fetch_item_~item#1.base| v_ArrVal_3582) |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|)) (select (select .cse2 |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|))))) (bvule (bvadd .cse0 (_ bv12 32)) (bvadd (_ bv16 32) .cse0 (bvmul (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_fetch_item_~item#1.base| v_ArrVal_3584) |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|))) (concat (concat (concat (select .cse1 (bvadd |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv7 32))) (select .cse1 (bvadd (_ bv6 32) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|))) (select .cse1 (bvadd |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv5 32)))) (select .cse1 (bvadd (_ bv4 32) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|)))) (_ bv4 32)))))) (forall ((v_ArrVal_3583 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3582 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_fetch_item_~item#1.base| v_ArrVal_3583))) (select (select .cse4 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_fetch_item_~item#1.base| v_ArrVal_3582) |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|)) (select (select .cse4 |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|))))) (bvule (bvadd .cse3 (_ bv8 32)) (bvadd .cse3 (_ bv12 32)))))) is different from false [2022-11-02 19:55:18,463 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_3583 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3582 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_3583))) (select (select .cse1 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_3582) |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|)) (select (select .cse1 |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|))))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_3584 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_3583 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3582 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (let ((.cse4 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_3583))) (select (select .cse4 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_3582) |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|)) (select (select .cse4 |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|))))) (bvule (bvadd .cse2 (_ bv12 32)) (bvadd (_ bv16 32) (bvmul (_ bv4 32) (let ((.cse3 (select (store |c_#memory_int| |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_3584) |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|))) (concat (concat (concat (select .cse3 (bvadd |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv7 32))) (select .cse3 (bvadd (_ bv6 32) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|))) (select .cse3 (bvadd |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv5 32)))) (select .cse3 (bvadd (_ bv4 32) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|))))) .cse2))))) is different from false [2022-11-02 19:55:18,589 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:55:18,590 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 360 treesize of output 289 [2022-11-02 19:55:18,618 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:55:18,619 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 510 treesize of output 462 [2022-11-02 19:55:18,643 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 228 treesize of output 212 [2022-11-02 19:55:19,094 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse9 (bvmul (_ bv4 32) (concat (concat (concat ((_ extract 31 24) |c_ULTIMATE.start_hid_open_report_#t~ret53#1|) ((_ extract 23 16) |c_ULTIMATE.start_hid_open_report_#t~ret53#1|)) ((_ extract 15 8) |c_ULTIMATE.start_hid_open_report_#t~ret53#1|)) ((_ extract 7 0) |c_ULTIMATE.start_hid_open_report_#t~ret53#1|)))) (.cse2 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|)) (.cse7 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|)) (.cse3 (bvadd (_ bv4 32) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|)) (.cse4 (bvadd |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv5 32))) (.cse5 (bvadd (_ bv6 32) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|)) (.cse6 (bvadd |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv7 32))) (.cse12 (= |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|))) (and (forall ((v_ArrVal_3564 (_ BitVec 32)) (v_ArrVal_3565 (_ BitVec 32)) (v_ArrVal_3563 (_ BitVec 32)) (v_ArrVal_3572 (_ BitVec 32)) (v_ArrVal_3570 (_ BitVec 32)) (v_ArrVal_3568 (_ BitVec 32)) (v_ArrVal_3566 (_ BitVec 32)) (v_ArrVal_3583 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3567 (_ BitVec 32)) (v_ArrVal_3582 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse1 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_hid_open_report_~parser~0#1.base| (store (store (store (store .cse7 .cse3 v_ArrVal_3570) .cse4 v_ArrVal_3572) .cse5 v_ArrVal_3568) .cse6 v_ArrVal_3567)) |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_3583))) (select (select .cse1 (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_hid_open_report_~parser~0#1.base| (store (store (store (store .cse2 .cse3 v_ArrVal_3565) .cse4 v_ArrVal_3566) .cse5 v_ArrVal_3563) .cse6 v_ArrVal_3564)) |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_3582) |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|)) (select (select .cse1 |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|))))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_3583 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3582 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3564 (_ BitVec 32)) (v_ArrVal_3565 (_ BitVec 32)) (v_ArrVal_3563 (_ BitVec 32)) (v_ArrVal_3572 (_ BitVec 32)) (v_ArrVal_3570 (_ BitVec 32)) (v_arrayElimCell_483 (_ BitVec 8)) (v_arrayElimCell_482 (_ BitVec 8)) (v_ArrVal_3568 (_ BitVec 32)) (v_ArrVal_3566 (_ BitVec 32)) (v_arrayElimCell_481 (_ BitVec 8)) (v_ArrVal_3567 (_ BitVec 32)) (v_arrayElimCell_480 (_ BitVec 8))) (let ((.cse10 (let ((.cse11 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_hid_open_report_~parser~0#1.base| (store (store (store (store .cse7 .cse3 v_ArrVal_3570) .cse4 v_ArrVal_3572) .cse5 v_ArrVal_3568) .cse6 v_ArrVal_3567)) |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_3583))) (select (select .cse11 (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_hid_open_report_~parser~0#1.base| (store (store (store (store .cse2 .cse3 v_ArrVal_3565) .cse4 v_ArrVal_3566) .cse5 v_ArrVal_3563) .cse6 v_ArrVal_3564)) |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_3582) |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|)) (select (select .cse11 |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|))))) (let ((.cse8 (bvadd .cse10 (_ bv12 32)))) (or (bvule .cse8 (bvadd .cse9 (_ bv16 32) .cse10)) (bvule .cse8 (bvadd (_ bv16 32) .cse10 (bvmul (_ bv4 32) (concat (concat (concat v_arrayElimCell_482 v_arrayElimCell_483) v_arrayElimCell_481) v_arrayElimCell_480)))))))) (or (not .cse12) (forall ((v_ArrVal_3583 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3582 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3564 (_ BitVec 32)) (v_ArrVal_3565 (_ BitVec 32)) (v_ArrVal_3563 (_ BitVec 32)) (v_ArrVal_3572 (_ BitVec 32)) (v_ArrVal_3570 (_ BitVec 32)) (v_arrayElimCell_483 (_ BitVec 8)) (v_arrayElimCell_482 (_ BitVec 8)) (v_ArrVal_3568 (_ BitVec 32)) (v_ArrVal_3566 (_ BitVec 32)) (v_arrayElimCell_481 (_ BitVec 8)) (v_ArrVal_3567 (_ BitVec 32)) (v_arrayElimCell_480 (_ BitVec 8))) (let ((.cse13 (let ((.cse14 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_hid_open_report_~parser~0#1.base| (store (store (store (store .cse7 .cse3 v_ArrVal_3570) .cse4 v_ArrVal_3572) .cse5 v_ArrVal_3568) .cse6 v_ArrVal_3567)) |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_3583))) (select (select .cse14 (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_hid_open_report_~parser~0#1.base| (store (store (store (store .cse2 .cse3 v_ArrVal_3565) .cse4 v_ArrVal_3566) .cse5 v_ArrVal_3563) .cse6 v_ArrVal_3564)) |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_3582) |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|)) (select (select .cse14 |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|))))) (bvule (bvadd .cse13 (_ bv12 32)) (bvadd (_ bv16 32) .cse13 (bvmul (_ bv4 32) (concat (concat (concat v_arrayElimCell_482 v_arrayElimCell_483) v_arrayElimCell_481) v_arrayElimCell_480))))))) (or (forall ((v_ArrVal_3564 (_ BitVec 32)) (v_ArrVal_3565 (_ BitVec 32)) (v_ArrVal_3563 (_ BitVec 32)) (v_ArrVal_3572 (_ BitVec 32)) (v_ArrVal_3570 (_ BitVec 32)) (v_ArrVal_3568 (_ BitVec 32)) (v_ArrVal_3583 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3566 (_ BitVec 32)) (v_ArrVal_3567 (_ BitVec 32)) (v_ArrVal_3582 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse15 (let ((.cse16 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_hid_open_report_~parser~0#1.base| (store (store (store (store .cse7 .cse3 v_ArrVal_3570) .cse4 v_ArrVal_3572) .cse5 v_ArrVal_3568) .cse6 v_ArrVal_3567)) |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_3583))) (select (select .cse16 (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_hid_open_report_~parser~0#1.base| (store (store (store (store .cse2 .cse3 v_ArrVal_3565) .cse4 v_ArrVal_3566) .cse5 v_ArrVal_3563) .cse6 v_ArrVal_3564)) |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_3582) |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|)) (select (select .cse16 |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|))))) (bvule (bvadd .cse15 (_ bv12 32)) (bvadd .cse9 (_ bv16 32) .cse15)))) .cse12))) is different from false [2022-11-02 19:55:42,651 WARN L234 SmtUtils]: Spent 12.91s on a formula simplification. DAG size of input: 80 DAG size of output: 78 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-02 19:55:42,917 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse2 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|)) (.cse7 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|)) (.cse3 (bvadd (_ bv4 32) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|)) (.cse4 (bvadd |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv5 32))) (.cse5 (bvadd (_ bv6 32) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|)) (.cse6 (bvadd |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv7 32))) (.cse8 (= |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|))) (and (forall ((v_ArrVal_3564 (_ BitVec 32)) (v_ArrVal_3565 (_ BitVec 32)) (v_ArrVal_3563 (_ BitVec 32)) (v_ArrVal_3572 (_ BitVec 32)) (v_ArrVal_3570 (_ BitVec 32)) (v_ArrVal_3568 (_ BitVec 32)) (v_ArrVal_3566 (_ BitVec 32)) (v_ArrVal_3583 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3567 (_ BitVec 32)) (v_ArrVal_3582 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse1 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_hid_open_report_~parser~0#1.base| (store (store (store (store .cse7 .cse3 v_ArrVal_3570) .cse4 v_ArrVal_3572) .cse5 v_ArrVal_3568) .cse6 v_ArrVal_3567)) |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_3583))) (select (select .cse1 (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_hid_open_report_~parser~0#1.base| (store (store (store (store .cse2 .cse3 v_ArrVal_3565) .cse4 v_ArrVal_3566) .cse5 v_ArrVal_3563) .cse6 v_ArrVal_3564)) |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_3582) |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|)) (select (select .cse1 |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|))))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (or (not .cse8) (forall ((v_ArrVal_3583 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3582 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3564 (_ BitVec 32)) (v_ArrVal_3565 (_ BitVec 32)) (v_ArrVal_3563 (_ BitVec 32)) (v_ArrVal_3572 (_ BitVec 32)) (v_ArrVal_3570 (_ BitVec 32)) (v_arrayElimCell_483 (_ BitVec 8)) (v_arrayElimCell_482 (_ BitVec 8)) (v_ArrVal_3568 (_ BitVec 32)) (v_ArrVal_3566 (_ BitVec 32)) (v_arrayElimCell_481 (_ BitVec 8)) (v_ArrVal_3567 (_ BitVec 32)) (v_arrayElimCell_480 (_ BitVec 8))) (let ((.cse9 (let ((.cse10 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_hid_open_report_~parser~0#1.base| (store (store (store (store .cse7 .cse3 v_ArrVal_3570) .cse4 v_ArrVal_3572) .cse5 v_ArrVal_3568) .cse6 v_ArrVal_3567)) |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_3583))) (select (select .cse10 (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_hid_open_report_~parser~0#1.base| (store (store (store (store .cse2 .cse3 v_ArrVal_3565) .cse4 v_ArrVal_3566) .cse5 v_ArrVal_3563) .cse6 v_ArrVal_3564)) |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_3582) |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|)) (select (select .cse10 |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|))))) (bvule (bvadd .cse9 (_ bv12 32)) (bvadd (_ bv16 32) .cse9 (bvmul (_ bv4 32) (concat (concat (concat v_arrayElimCell_482 v_arrayElimCell_483) v_arrayElimCell_481) v_arrayElimCell_480))))))) (or (forall ((v_ArrVal_3564 (_ BitVec 32)) (v_ArrVal_3565 (_ BitVec 32)) (v_ArrVal_3563 (_ BitVec 32)) (v_ArrVal_3572 (_ BitVec 32)) (v_ArrVal_3570 (_ BitVec 32)) (v_ArrVal_3568 (_ BitVec 32)) (v_ArrVal_3583 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3566 (_ BitVec 32)) (v_ArrVal_3567 (_ BitVec 32)) (v_ArrVal_3582 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse11 (let ((.cse12 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_hid_open_report_~parser~0#1.base| (store (store (store (store .cse7 .cse3 v_ArrVal_3570) .cse4 v_ArrVal_3572) .cse5 v_ArrVal_3568) .cse6 v_ArrVal_3567)) |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_3583))) (select (select .cse12 (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_hid_open_report_~parser~0#1.base| (store (store (store (store .cse2 .cse3 v_ArrVal_3565) .cse4 v_ArrVal_3566) .cse5 v_ArrVal_3563) .cse6 v_ArrVal_3564)) |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_3582) |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|)) (select (select .cse12 |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|))))) (bvule (bvadd .cse11 (_ bv12 32)) (bvadd (_ bv16 32) .cse11 (bvmul (_ bv4 32) (concat (concat (concat (_ bv0 8) (_ bv0 8)) (_ bv0 8)) (_ bv1 8))))))) .cse8))) is different from false [2022-11-02 19:55:43,335 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:55:43,336 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 226 treesize of output 219 [2022-11-02 19:55:43,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:55:43,375 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 165 [2022-11-02 19:55:43,395 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 156 [2022-11-02 19:55:43,601 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:55:43,601 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 217 treesize of output 210 [2022-11-02 19:55:43,622 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 324 treesize of output 312 [2022-11-02 19:55:43,659 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 151 [2022-11-02 19:55:44,077 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:55:44,078 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 226 treesize of output 219 [2022-11-02 19:55:44,095 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 19:55:44,108 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 173 treesize of output 161